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Article

SDG-Oriented Supply Chains: Business Practices for Procurement and Distribution

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Department of Industrial Engineering, University of Salerno, 84084 Fisciano, Italy
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Department of Management & Innovation Systems, University of Salerno, 84084 Fisciano, Italy
3
Department of Management, Reald University College, 9400 Vlorë, Albania
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Author to whom correspondence should be addressed.
Sustainability 2022, 14(3), 1325; https://doi.org/10.3390/su14031325
Submission received: 31 December 2021 / Revised: 20 January 2022 / Accepted: 21 January 2022 / Published: 25 January 2022

Abstract

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This paper aims at analyzing sustainable practices that can be implemented within supply chains, linking them to Sustainable Development Goals (SDGs) in order to show the performance achieved by SDG-oriented supply chains. Sustainable practices were collected from the repository “Business Process Framework for Sustainability” owned by the Department of Industrial Engineering of the University of Salerno (Italy). By using literature research and descriptive statistics, there emerges a positive relationship between sustainable development and SC performance enhancement. From the study of the practices that can be implemented for cooperation activities with upstream and downstream supply chain partners, it emerges that companies have many opportunities of both supporting the 2030 Agenda and enhancing their market and organizational performance. The research demonstrates that both procurement and distribution processes could be reengineered by implementing sustainable approaches considering all three dimensions of sustainability. Differences emerge in terms of number of opportunities, depending on motivations for implementing them, industry and supply chain processes, performance achieved, and SDGs pursued.

1. Introduction

A supply chain is a complex service system [1]. The sustainability of actions for the future generation [2] can be used to explain supply chains. In this sense, a sustainable supply chain is a traditional supply chain (SC) that is oriented towards sustainable development, incorporating economic, environmental, and social dimensions of sustainability [3]. Sustainability is linked “to the needs to determine a balance between consumption -growth-development” [4]. Under this lens, sustainability can be considered as a key for achieving a competitive advantage for all the members of the SC, improving profitability and performance [5]. This requires collaboration among manufacturer and downstream/upstream partners to improve environmental, social, and economic performance within SC operations. In the last decade, the number of scientific articles focusing on the relationship between sustainable development and SC management has been significantly growing. In particular, studies on green supply chains are predominant [6], whereas social sustainability in SCs has received less attention in the literature. Concepts such as sustainable development, sustainable innovation, and sustainable-driven innovation are more and more common among companies and within SCs and will assume a significant role in terms of competitive advantage, e.g., providing opportunities of cost savings and improvements in terms of market performance. Moreover, innovation stimulated by digital transformation can contribute to creating a competitive advantage oriented toward preserving environmental sustainability and collective wellbeing [7,8,9,10]. However, initiatives carried out by the private sector in terms of sustainable development should be in line with the expectations of the United Nations and policy makers. In particular, the 2030 Agenda defines a set of 17 Sustainable Development Goals (SDGs) and 169 targets, involving many actors such as citizens and private and public entities. Even though companies have a significant role in the achievement of such goals, the SDG framework does not specify “how” firms should refocus, reorganize, and reengineer their processes to support the 2030 Agenda. Since the achievement of SDGs requires a collective effort and cooperation among actors, SCs are particularly affected by such changes towards new and sustainable ways of doing business. From the literature review, the number of contributions focusing on the impact of the SCs on the achievement of the Sustainable Development Goals (SDGs) is still inadequate. Apart from scientific contributions providing an integrated holistic approach to face the issue, the literature presents studies on a limited number of companies or focuses on specific industries or few SDGs. Therefore, there is a need of summarizing these contributions in order to build a repository of sustainable practices that are formally linked to at least one SDG and that clarify “how” to both support the 2030 Agenda and obtain business performance improvements. Consequently, a first research gap that this work intends to fill is the direct linkage between SDGs and activities carried out within SCs. Even though the literature on sustainable SCs is rich in contributions, there are no comprehensive studies that look at SCs from the perspective of the achievement of SDGs, understanding their formal contribution to the 2030 Agenda. Indeed, as to the issue of sustainability, companies usually refer to the traditional triple bottom line concept, which is simpler to implement within companies’ sustainability frameworks, but not exhaustive.
With this work, a quantitative analysis of the state of the art of sustainable practices is presented, employing data collected from the project “Business Process Framework for Sustainability” carried out by the Department of Industrial Engineering of the University of Salerno (Fisciano, Italy). Indeed, a repository of practices is analyzed in order to study the impact of SCs on the achievement of SDGs, considering relationships with both downstream and upstream SC partners, with a focus on procurement and distribution activities. Such a repository records a list of practices extracted from about 3000 scientific papers, which have been thoroughly analyzed by experts in the field of sustainable development and business management, while also defining for each practice a set of standardized labels associated with the industry of possible implementation, the SC processes that could enable carrying out of the sustainable practice, and the impact on the business in terms of either market or organizational performance. Moreover, each sustainable practice is also associated with at least one SDG. This will support the understanding of the different opportunities of implementation of SDG-oriented practices within both procurement and distribution processes, also depending on business- and sustainability-related issues. Therefore, it will be possible to enable the most frequent linkages with SDGs to emerge, and thereby to suggest which sustainability areas procurement and distribution activities could positively affect.
With all this presented, the aim of this paper is twofold: firstly, investigate the relationship between SCs and SDGs; secondly, portray the state of the art of current sustainable practices that could be implemented within SCs to support SDGs.
In order to achieve these goals, the paper is structured as follows. A literature review on the relationship between SCs and SDGs is presented, followed by a focus on procurement and distribution processes. Thereafter, a description of how the repository was built from the analysis of scientific papers is presented, with a discussion of the standardized labels assigned to each sustainable practice. Afterwards, the analysis of the repository is performed to show the role of SCs in supporting the achievement of SDGs and the business performance enhancement opportunities that could result at the same time. Finally, discussions and a conclusion close the work, with a focus on theoretical, methodological, managerial, and practical implications of the research.

2. Theoretical Background

In this paper we use three different theoretical approaches to frame the phenomenon observed. The background starts from the supply chain; it includes procurement and concludes with distribution; all is related to the Sustainable Development Goals. Below are the specific sub-sections.

2.1. Supply Chains and Sustainable Development Goals

Firms and supply chains are fundamental for achieving the 2030 Agenda. Indeed, they manage human, natural, and financial resources, thus directly influencing sustainability issues [11,12,13]. By using a relational approach, firms and supply chains create a supply network that through the lens of the triple bottom line aims to “find a trade-off between economic, environmental and social dimensions, simultaneously” [14]. Since the literature underscores that future competition will be based on sustainability issues [15], companies should promote sustainability and address their investments towards new approaches in line with SDGs [16], while also including industry 4.0 technologies [17].
However, while the “policy maker” perspective is widely investigated, literature on the relationship between the private sector and the 2030 Agenda is still undersized [18,19]. Even though scholars have focused their attention on case studies and models of the implementation of sustainable development practices, a direct linkage to SDGs is infrequent. To date, the literature tends to focus on a simpler association between sustainable development and firms, in the form of concepts such as sustainability-oriented innovation [20]. Supply chains aim at maximizing profits, enhancing customer satisfaction, and optimizing SC costs; there is therefore an undeniable trade-off with SDGs [18]. The literature underscores that there is a need of clarifying “how” firms should manage such a trade-off [11,16]. However, SCs have been the locus for technological progress, being the main seed for innovation, technological development, and diffusion of knowledge [21,22,23,24,25]. Therefore, they could be ready to change, reengineer, and implement processes and activities from a sustainable perspective.
Moreover, scholars affirm that there is a need for frameworks to integrate SDGs within firms’ strategies [26,27]. As to SC management, it is necessary to reorganize relationships with all SC partners, in which human, financial, and material resources are shared among members. An effective implementation of sustainable development within SC requires the concrete and formal engagements of all stakeholders and actors [28].
Therefore, from the literature review it emerges that research is more and more concentrating on sustainable development and sustainability-oriented innovation, but without any formal linkage to the 2030 Agenda. In order to investigate the relationship between SCs and SDGs and differently from the extant literature which provides a holistic discussion about the opportunities deriving from implementing strategies in line with SDGs [11,12,13,16,18,19,26,27,29], this paper provides statistics about the direct relationship between SCs and SDGs. From these statistics, a clearer understanding of the state of the art of actual sustainable practices implementable within SCs to support SDGs is provided. This result represents an original point of view differentiated from other scientific contributions focused on either specific case studies/industries [30,31] or a limited number of SDGs [32].
The following sections provide a brief literature review on the main issues under investigation as to the procurement and distribution processes.

2.2. Procurement and Sustainable Development Practices

Since raw materials and components are purchased from suppliers, their activities affect SC sustainability [3,33]. Many researchers have focused on supplier selection, proposing sustainability criteria to assess sustainability levels [34] and mainly focusing on environmental issues associated with the concept of green sourcing and green SC [35,36,37,38]. Relatively few papers have considered social criteria [39]. The number of scientific articles suggesting frameworks and methodologies for supplier selection that enclose sustainability-related criteria is growing considerably [34,40,41].
A further element of analysis is the need of SC integration between suppliers and buyers to support sustainability, for instance by suggesting a “lean” philosophy [42], and circular economy approaches [43,44,45]. Moreover, scholars focus on the SC sustainability assessment, i.e., the process for analyzing the levels of sustainability, which is fundamental to control and monitor the impact of the SC on economic, environmental, and social issues [46].
The scientific literature is underscoring that sustainable SCs are able to achieve cost reduction and enhance product quality. Since on average about 70 percent of SC costs pertain to purchasing activities [47], sustainability can be also considered as a means for reengineering processes and achieving organizational performance improvements [48].
From the analysis of the literature, a direct relationship between procurement practices and SDGs is lacking. Indeed, the literature has underscored those relationships with suppliers have to be addressed towards environmental issues—such as waste, material usage, energy consumption, and emission reduction [42]—and social problems—such as poverty, social exclusion, corruption, human rights, safety, and equity [49]. However, even though sustainability is more and more becoming a key factor for buyer–supplier relationships in SC, a direct linkage with their contribution on SDGs is lacking, with only a few studies underscoring the direct linkage. Exceptions are studies on specific opportunities, such as the relationship between SDGs and the industrial sharing economy [50], as well as investigations of particular industries, such as the food SC which have found a relationship with SDGs 2, 12 and 13 [42], the petrochemical SC associated with SDGs 3, 6, 8, 9, 12 and 13 [34], and the textile SC linked to SDGs 8 and 12 [51].

2.3. Distribution and Sustainable Development Practices

Distribution and logistics enclose various resource-consuming processes such as transportation, delivery, and warehouse activities; relationships with 3PL, 4PL, carriers, distributors, wholesalers, and retailers; and inventory management and reverse logistics activities. Sustainable approaches could radically change such processes, and the literature is rich in contributions signaling the impact on the environment. For instance, scholars have investigated the implementation of eco-design strategies to improve packaging sustainability, including both their use and their disposal [52]. Moreover, there is a growing interest in reverse logistics activities, which are fundamental for supporting circular and green economies, closed-loop SCs, and sustainable and eco-friendly development [53,54,55,56]. Obviously, transportation processes have been widely investigated, due to their relevant impact in terms of greenhouse gas emissions. Research has focused on optimizing transportation processes, including planning, and suggesting new promising vehicle technologies [57,58]. Transportation research has also focused on the optimization of activities within sea terminals, e.g., considering sustainability-related parameters to optimize container terminal performance [59]. Warehouse efficiency could be enhanced by optimizing material handling and improving the space utilization of storage facilities [60]. Regarding supply network design, the literature suggests frameworks for selecting sustainable plant and warehouse locations [61]. New inventory management approaches have been suggested to reduce carbon emissions to protect against global warming, e.g., the sustainable economic order quantity model [62]. Moreover, the literature has discussed the role of outsourcing logistics services to 3PL and 4PL providers in terms of environmental sustainability [63].
Regardless of specific processes, some studies face the problem of optimizing sustainability of the entire set of distribution activities. For instance, optimization tools for the production-distribution-inventory-allocation-location problem in the pharmaceutical industry have been suggested by scholars [64,65]. Other studies propose the integration between reverse logistics and the other distribution processes [66,67].
Scholars also focus particularly on the role of Industry 4.0 technologies, which are useful for improving the efficiency and effectiveness of distribution processes, reducing material, energy and water waste, and supporting the real-time monitoring [68,69]. Internet of things, big data, artificial intelligence, RFID, and blockchain are considered the most promising emerging technologies that will affect distribution and are regarded as key enablers for cleaner production and a circular economy [60,70,71]. All these technologies will allow firms to redesign SCs and improve their operational performance, enhancing efficiency in operations and material management and leading to cost savings [72].
Regarding the social dimension of sustainability, few studies suggest relationships with distribution processes, e.g., in terms of job opportunities [64,73].
Similarly to procurement, distribution is widely discussed within the literature on sustainable development, but robust argumentation on the direct relationship with SDGs is lacking. Exceptions are studies linking the food SC with SDGs 2, 7, 8, 9, 12, 13 and 16 [74,75].

3. Methodology, Data and Standardized Variables

In this paper both literature research (Section 3) and descriptive statistical analysis (Section 4) are used to extract sustainable practices that can be implemented within SCs, and to link them to SDGs in order to show the performance achieved by SDG-oriented SCs associated with the 2030 Agenda. In this section a literature review has been carried out based on two different sources: an external one, represented by journal papers published in ranked journals (WoS and Scimago Q1 and Q2); and an internal one, i.e., a unique repository called “Business Process Framework for Sustainability”, created and improved by the Department of Industrial Engineering at University of Salerno (Fisciano, Italy). In the next sub-sections, the explanation of the research process follows.

3.1. Data Collection from Literature Review

The data source for sustainable practices is the scientific literature on business management, specifically articles published in the most significant journals in the field of business, finance, economics, management, public administration, operations research, management science, and accounting, according to the ISI Web of Science and Scimago Journal Ranking, focusing on journals in Q1 and Q2. The list of scientific papers is extracted from SCOPUS, considering only those containing in the fields “title” and “keywords” words such as “sustainability”, “sustainable” and “SDG”.
The choice of employing such a source is motivated by the fact that the literature is rich in case studies on the role of sustainable development from the business perspective, which is the main focus of this research. Moreover, scientific literature is continuously updated and is a high-value source due to the external review process. Scientific articles, specifically in the form of case studies, allow for a detailed description of “how” sustainable development could be implemented.
Therefore, the project “Business Process Framework for Sustainability” carried out by the Department of Industrial Engineering of the University of Salerno (Italy) aims at collecting case studies from the literature in order to implement a repository of sustainable practices that could be suggested to companies. Differently from traditional literature reviews aiming at describing the state of the art to provide a scientific contribution, for this tool the analysis of each paper requires a formal and standardized procedure of registration within the repository. By employing a web application, experts in the field of sustainable development and business management extrapolate information about a sustainable practice by defining the association with sustainability-related elements, i.e., SDGs, and business-related elements, such as industry, business function, and impact. These variables are standardized to allow for comparability among practices. It is important to underscore that during data collection many documents were discarded since they did not provide sufficient information on the sustainable practice, which was necessary to label each variable. For this paper, the database built on papers published from January 2019 to May 2021 was analyzed, focusing on practices associated with business function “procurement” and “distribution”.
Since reconfiguring SCs to support sustainable development requires radical changes and a reengineering of processes and investments, companies would be interested in supporting SDGs only if they could have the opportunity of improving their competitiveness in terms of either market or organizational performance. Therefore, at the basis of the choice of implementing SDG-oriented SCs, there is the need for the profit-oriented SC to achieve, at the same time, a positive impact on the business.
Consequently, the following business-related variables are considered:
  • The industry of belongingness of the actors within the SC, since from the analysis of the literature it is evident that there are different opportunities within different industries;
  • The SC processes associated with such practices, distinguishing between “procurement” and “distribution”, with the first including all activities involving upstream partners, and the second including those engaging downstream actors;
  • The positive business impact associated with the practice, which is independent of the concept of sustainability and refers to market and organizational performance that the focal company can achieve.
As to sustainability-related parameters, the database reports for each practice the formal association with SDGs, either directly declared within the document or assumed by the expert that analyzed the paper. Moreover, a second variable, “motivation”, underscores the reason in terms of sustainability that could stimulate a firm to implement the sustainable practice. It refers to economic, social, and environmental issues that are widely treated by the literature on sustainable-driven innovation and sustainable development, such as “emissions reduction”, “workplace health and safety” and “loss and waste reduction”. Indeed, in most cases, the SDGs targets are expressed in terms that are quite far from the business language, whereas the “motivation” field included in the repository reports issues closer to corporate language. The following sections will better describe such variables.

3.2. Business-Related Standardized Variables

Three variables refer to the business context where the SC operates, i.e., industry, processes, and impact. As to the industry, practices can be useful for all industries and associated with the label “general”; otherwise, the specific industry is reported within the repository. Each one is also associated with the relevant sector, i.e., primary, manufacturing, and tertiary. Table 1 reports the list of industries under investigation. In order to ensure the definition of an exhaustive list, the categories of industries were compared with the Standard Industrial Classification Codes (Available online: www.siccode.com (accessed on 5 September 2021) to check its comprehensiveness). For the manufacturing sector, a general label was added to consider sustainable practices that are valid for all industrial applications.
Regarding the SC processes, two business functions are considered. First, the “procurement” function covers relationships with upstream partners and suppliers, such as order management and purchasing activities, raw materials management, and supplier evaluation and selection. Second, the “distribution” function is associated with logistics activities engaging downstream partners, such as transportation, delivery, warehouses, and inventory. Therefore, cooperation with 3PL, 4PL, carriers, distributors, wholesalers, and other logistic partners could be carried out by implementing sustainable approaches, for both forward and reverse logistics.
As to the impact on the business performance, Table 2 shows the list of labels that refer to either market or organizational performance that could be positively affected by the implementation of a sustainable practice managed by the focal firm. Such labels are entirely independent from SDGs, with the aim of creating an autonomous element for evaluating the opportunity of enhancing business performance. For instance, market performance refers to the growing performance towards stakeholders, such as investors and customers, whereas organizational performance can be associated with optimization of processes in terms of cost, time, and quality of physical flows, as well as regarding the management of information flows, while also considering positive impacts in terms of supply chain relationships management.

3.3. Sustainability-Related Standardized Variables

As to the variables associated with sustainable development, each practice is formally linked to at least one SDG in order to allow the specific contribution to the achievement of the 2030 Agenda to emerge. Moreover, since there is an evident missing link between business performance goals and SDGs, to add robustness to the analysis an additional label, “motivation”, was considered. A list of 23 labels includes concepts of sustainable development and sustainable-oriented innovation that are widely employed in the literature and that are well-known for a firm. Indeed, the labels are associated with the traditional triple bottom line concept, with each being linked to at least one of the dimensions of sustainability, i.e., environmental, economic, and social. However, given that firms are prone to more traditional approaches, the repository also reports such information to enrich the triple bottom line by detailing the specific motivation that drives companies to implement sustainable development. For instance, almost all companies face the concept of “emissions reduction” but not all of them know that SDG 13 covers this issue. Within these labels, 9 refer to a unique dimension of sustainability (6 environmental, 2 social and 1 economic), 11 are related to two dimensions (7 economic-social, 2 environmental-economic and 2 environmental-social), and 3 are linked to all three dimensions (Table 3). For example, among environmental elements, “recycling and reuse—Circular economy” is particularly considered in the literature, as well as the reductions of emissions, loss and waste, and natural resources consumption.

4. Analysis and Results

Starting from the results of the literature review (Section 3), in this section descriptive statistics are presented and described. From the previous step, journal papers referred to the sustainable practices and published in ranked journals were collected overtime and selected from a repository called “Business Process Framework for Sustainability” owned by the Department of Industrial Engineering of the University of Salerno (Fisciano, Italy).
In this section the sample used in the statistical analysis is described. Moreover, descriptive statistics are presented with the aim to deeply understand the relationship between Business and Sustainability-Related variables and the procurement and distribution functions.

4.1. Sample Description

As of the end of July 2021, the repository consists of 5265 sustainable practices, considering all business functions. Taking into account only processes directly involved in SC relationships, i.e., “procurement” and “distribution” functions, the repository reports, respectively, 417 and 253 practices, for a total of 670 opportunities of implementing SDG-oriented business practices within SCs. These practices were detected from a sample of 2764 papers. Such an activity required about 20 man-months of research by experts in the field of sustainable development and business management.

4.2. Descriptive Statistics

Figure 1 reports the count of sustainable practices by SDG. Only in a few cases are the linkages not available, therefore there is a significant coverage. As to procurement, the most significant goals are 12, 13 and 17. The relevant association with Goal 12 underscores the role of procurement in terms of consumption of resources, mainly natural ones. For instance, firms can involve suppliers in eco-design and in using environmentally friendly materials to minimize the negative impacts of products and packaging on the ecology [76]. The association with Goal 17 underscores the strategic role of partnerships between buyers and suppliers to implement common practices supporting sustainable development. Firms can engage suppliers in the SC design to build environmentally and socially responsible partnerships [77], while also defining supplier codes of conduct under the buyer’s governance [78]. SDG 13 reflects the positive implications that buyer–supplier relationships can have on environmental impact and climate change. For instance, buyers should use food grown, produced, processed, and consumed “locally” or “regionally”, reducing the pollution associated with transportation [79].
Regarding distribution, the main focus is on SDG 13, since resource handling, transportation and physical flows in general have a great impact on the environment. Indeed, transportation is responsible for one-third of global greenhouse gas emissions. Examples of sustainable practices are the use of software and apps to plan routes to avoid congestion and traffic accidents to save fuel, lowering carbon emissions per product [80], and the adoption of vehicles with fuel-efficient engines to reduce CO2 emissions [81]. Moreover, distribution can also invest on SDG 9 for better management of logistics infrastructure and equipment, while also employing emerging technologies such as blockchain and internet of things [82,83]. Goal 12 covers about 20% of sustainable practices, with a focus on resource consumption, recycling, and waste management within warehouses and transportation activities.
Figure 2 reports the count of sustainable practices grouped by motivation. Within the procurement function, “collaboration for sustainability” covers about 25% of practices, additionally underscoring the potentialities of buyer–supplier relationships and cooperation for sustainable development. The collaboration is useful for all the sustainability dimensions. For instance, firms can dedicate resources to perform activities such as training, educating suppliers on sustainability and offering seminars on sustainability [84]. The relevance of environmental sustainability is expressed by the label “emissions reduction”, which covers about 17% of sustainable practices, followed by circular economy approaches that particularly feature closed-loop SCs. Therefore, firms should use resources circularly not only at the individual level but also at the SC level. They have to build relationships with suppliers to share, reuse, and recycle resources circularly [85].
As to distribution, about one-half of practices regards “emissions reduction”, confirming the priority of environmental aspects, followed by “loss and waste reduction”, which could engage all downstream actors of the SC, such as distributors, wholesalers, carriers, and logistic service providers. For example, the use of artificial intelligence in automated store ordering systems in supermarkets can curb food perishability [86].
In summary, grouping motivations into the three macro-categories (Figure 3), environmental motivations are a priority for both functions. Moreover, for procurement the combination of economic and social issues is particularly important, signaling the attention towards SC stakeholders and the sustainable growth of the business. For instance, firms should audit a supplier’s locations and ensure non-employment of children and bonded labor [87] or implement blockchain for improving supply chain traceability and transparency towards stakeholders [88,89].
Figure 4 reports the count of practices by industry. For procurement, about 40% of practices is associated with the label “general”; sustainable practices therefore cover all industries and sectors. Such a share is even higher for distribution (about 50%), signaling that those sustainable approaches can be implemented in every company both upstream and downstream. In any case, the variable “industry” is significant, since the residual group of practices is widespread among specific industries. Apart from the opportunity of implementing practices within all manufacturing companies, for both procurement and distribution the food industry covers an important share. As to procurement, sustainable practices can be implemented for meat, pasta, cocoa beans, coffee, and eggs [48,90,91,92], whereas in distribution activities companies can implement methods for setting optimal target temperature for cold storage with sensor-based methods instead of traditional visual assessment [86] or use vacuum packaging to eliminate the presence of bacteria inside the package to improve the shelf life of products [52].
Grouping by sector, the manufacturing sector, which is the most common field for the implementation of SC management, is particularly prevailing (Figure 5).
Figure 6 shows the relationship between sustainability and improvements of business performance. Such a linkage is focal and at the center of this research, since SDG-oriented SCs also have to gain a competitive advantage from their support for the 2030 Agenda. In particular, the opportunity of improving brand reputation is the most common result within the procurement function, followed by efficiency and productivity enhancement and cost reduction. For instance, brand reputation can be enhanced by supporting suppliers in eco-design in order to manufacture eco-products that use environmentally friendly materials and packaging [76]. Moreover, well-managed social issues in the SC result in more efficiency and productivity among partners [93]; the optimization of resource consumption and the use of resources circularly also implies cost savings [85].
As to distribution, sustainable practices can also increase customer satisfaction, and produce efficiency and productivity enhancements as well as cost reduction. An example of customer satisfaction enhancement is the implementation of electronic waste take-back programs that are particularly appreciated by green customers [94].
As shown in the Figure 7, even though for both functions the most frequent impact is on specific market performances, by grouping practices by type of impact it emerges that organizational performance is prevalent and covers about two-thirds of sustainable practices.

4.3. The Relationship between Business and Sustainability-Related Variables and Procurement

The following section explores the relationship between business and sustainability-related variables within the procurement function. In particular, Figure 8 shows the distribution of practices for the couple SDG-sector. Some interesting insights emerge. General practices are focused on SDG 17, underscoring the role of buyer–supplier cooperation to support the 2030 Agenda. Goal 12 is important for the primary, manufacturing, and tertiary sectors, but Goal 8 is the most frequent within the tertiary sector. For example, the tourism industry supports SDG 8 by orientating customers towards ethical food consumption, promoting local culture, offering local and organic products, and purchasing food that is locally produced, eco-certified, or fair-trade [79,95,96].
Regarding the relationship with business impact, SDGs are more associated with organizational performance improvements than with market ones (Figure 9).
As to the motivation for adopting a sustainable practice, “collaboration for sustainability” is most significant within the manufacturing sector, which is also represented by many occurrences in the field of “emissions reduction”, “loss and waste reduction”, “natural resources consumption reduction” and “recycling and reuse—Circular economy” (Figure 10). For instance, to reduce the use of natural resources, loss, and waste, firms can use the portion of the material supplied whose quality is below the conventional standard to make a co-product [73].
As to the tertiary sector, it is focused on the circular economy, signaling that not only manufacturing can contribute to green economy. In the retail industry, retailers and suppliers can create a closed cycle of products recycling with clothes obtained from packaging bottles [97,98]. It is necessary to underscore the importance of “human/workers rights” as a general motivation crossing all sectors—e.g., by auditing suppliers to eradicate forced labor [87]—and the need for implementing “traceability and transparency” towards stakeholders [46].
Regarding the relationship between motivation and type of impact (Figure 11), the following motivations affect both market and organizational performance: “collaboration for sustainability”, “emissions reduction”, “human-workers rights”, “recycling and reuse—Circular economy”. Moreover, organizational performance is also linked to “fight corruption—Business ethics”, “natural resources consumption reduction” and “traceability and transparency”. For example, an employee’s opportunistic behaviors can be avoided by using merit as a criterion for promotions, salaries, and job benefits within the SC, and providing transparent access to information, [99]. Other examples of traceability allow for verifying whether the suppliers have been previously included in sanction lists because of an illegal activity [100].

4.4. The Relationship between Business and Sustainability-Related Variables and Distribution

In general, the distribution function is associated with SDGs 9, 11, and 13 (Figure 12). For instance, SDG 9 is associated with the implementation of enabling technologies to support green practices through emission control systems, GPS applications, real-time locating systems, warehouse management systems, logistics management systems, material management systems, enterprise resource planning, environmental database systems, environmental management systems, expert systems, learning management systems, order management systems, cloud computing, collaborative systems, content management systems, customer relationship management systems, environmental e-mails, environmental apps, mash-up applications, peer-to-peer resource sharing, social media, syndication systems, videocasting, and Wiki [101]. However, regarding the manufacturing sector, Goal 12 covers about 50% of the sustainable practices analyzed. Various practices are available to manage relationships with downstream partners and improve forecasting accuracy [102], optimize vehicle routing, improve the structure of refrigerated boxes, and use automated monitoring systems [103].
As to the business performance enhancement that it is possible to achieve from the support for the 2030 Agenda (Figure 13), SDGs 8, 9, 11, 12, and 13 are associated with organizational performance, while market performance is particularly supported by sustainable practices linked to Goals 9 and 13. Indeed, Goal 9 is associated with improvements in terms of competitive advantage, since innovation and technological development in distribution can provide market advantages: e.g., by optimizing container and transport operations, firms are able to attract more customers [59].
Figure 14 shows the relationship between the sector and the motivations for adopting sustainable distribution practices. A general linkage underscores the role of distribution for “emission reduction”, that is also significant for the manufacturing and tertiary sectors. Moreover, as to manufacturing, “loss and waste reduction” and “recycling and reuse—Circular economy” are particularly linked to sustainable practices. Therefore, the environmental impact is prevailing on the other forms of sustainability. For instance, circular economy models can be implemented within the electronics industry [94], whereas loss and waste reduction features the food [102] and steel industries [55].
As to the linkage between motivation and impact on business performance, Figure 15 shows that “emissions reduction” is predominant for sustainable practices that improve both market and organizational performances. As to the latter, positive enhancements are also linked to environmental elements such as “natural resources consumption reduction”, “recycling and reuse—Circular economy” and “loss and waste reduction”. In particular, among the natural resources linked to sustainable practices in distribution processes, the opportunities for the water industry are significant [69,104].

5. Discussions

Starting from the previous sections, discussions about the academic (theoretical contribution and methodological issues) and practical (managerial) sides are presented below.

5.1. Theoretical Contribution

From the analysis of the specific opportunities of implementing sustainable practices within SCs, there is an evident positive relationship between sustainable development and SC performance enhancement. The research demonstrates that sustainable SCs and SDG-oriented SCs can implement business practices for procurement and distribution activities that may positively contribute to the overall performance. Such opportunities can be affected by the features of the relevant industry and depend on the SC function—procurement or distribution—where they are implemented. In any case, the research contributes to the literature on SC management by providing a direct linkage between SDGs and SC performance, proposing hundreds of possible applications. This means that firms can continue innovating and improving their business performance by reengineering processes to maximize profits, but also by contributing to the achievement of SDGs. In line with the scientific literature that began with the study of the linkage between SDGs and firms, this research suggests such a linkage within various industries and clarifies where there are the main opportunities for implementation and what those opportunities are. Therefore, from the theoretical perspective the research contributes to the initial SDG framework by providing formal sustainable practices that clarify “how” to implement sustainability and can be employed to support the 2030 Agenda. Indeed, a comprehensive and direct linkage between SDGs and SCs is lacking in the literature. This research shows that by looking at SCs from the perspective of the achievement of SDGs, it is possible to clarify how companies and SCs could formally contribute to the 2030 Agenda. Such a formal relationship could not be captured by considering the traditional triple bottom line approach. Even though it is simpler to understand and implement within companies’ sustainability frameworks, it is necessary to overcome such a concept and to refer to SDGs to truly associate companies’ activities to the contribution in the field of sustainability. Such complexity in linking SDGs and SCs is probably the motivation for the literature’s focus on the traditional linkage with environmental, economic, and social sustainability. Indeed, SDGs have been defined by “policy makers”; they therefore suffer from the macro-economic perspective adopted by the United Nations, which is not easy to convert into the perspective of the private sector. Therefore, this research tries to deduce the linkage with SDGs from sustainable practices available to firms to portray the state of the art of the contribution of SCs to the achievement of the 2030 Agenda. SDG-oriented SCs will have a formal role within the 2030 Agenda, by defining the specific SDGs on which they will focus and also identifying priorities of implementation on specific targets and goals. However, understanding that firms are prone to more traditional approaches, the repository also reports information about the field motivation, for a more exhaustive analysis of the state of the art on the SC contribution to sustainability issues. Such information enriches the analysis since it is based on a list of very different elements that can be linked to one or more types of sustainability according to the triple bottom line concept. The suggested taxonomy underscores the need of approaching the triple bottom line by entering into details of the specific motivation that drives companies to implement sustainable development. For instance, within the environmental dimension of sustainability there are very different elements: e.g., preserving biodiversity is a goal very different from reducing emissions. In addition to the suggestion to revise the traditional triple bottom line concept, it is important to underscore that the field motivation, being associated with such a concept, plays the role of liaison between sustainable SCs based on the SDG concept and those based on the triple bottom line concept.
Moreover, although the literature focuses on the environmental dimension of sustainability, this research demonstrates that there are also many opportunities for supporting its social dimension and most SDGs related to social issues. Therefore, SCs can be the perfect locus for firms to change their processes and practices and cooperate with partners to support all SDGs, overcoming the limited concepts of green SCs and closed-loop SCs. Firms without the engagement of upstream and downstream partners could not assume the responsibility of carrying out a sustainable development strategy, since a joint effort of all SC actors and stakeholders is necessary.
From the analysis of the repository, differences emerge between the procurement and distribution functions. This means that SCs should implement an overall sustainable strategy, but different practices should feature the relationship of the focal firm with upstream and downstream partners.

5.2. Methodological Issues

The analysis was performed thanks to the implementation of a repository of practices that are associated with standardized variables and labels. This allow for standardized data collection from the scientific literature, aiming at classifying case studies and implementation proposals by scholars to collect a list of sustainable practices that could be concretely implemented within SCs, covering all dimensions of sustainability and providing a direct linkage with SDGs. Therefore, the role of the experts that have studied in detail each suggested practice and critically associated it to the various labels of the repository is crucial. The repository can be continuously updated by adding new sustainable practices that will be detected from future literature contributions. A similar methodology can be employed to study other documents, such as a firm’s sustainability reports, to enrich the repository and diversify the sources from which practices are detected.
An additional remark refers to the definition of the variable “motivation”. The list of labels assigned to the variable are the result of the analysis of about 3000 scientific papers, thus confirming its robustness. Such concepts can also be useful for associating sustainable development with business practices and activities. Indeed, despite the aim of directly linking SC performance with SDGs, it is also necessary to associate sustainable practices with concepts that are closer to firms’ language and well-known within business practices.

5.3. Practical and Managerial Implications and Recommendations

Data collected from the project “Business Process Framework for Sustainability” carried out by the Department of Industrial Engineering of the University of Salerno (Italy) represent a repository of sustainable practices that can be concretely used as a reference for companies and SCs that intend to support the 2030 Agenda. The repository was developed imagining that in the future firms can access it to find new opportunities of implementation of sustainable practices for their SC. Indeed, the database can support firms in selecting sustainable practices that are available for their business, while also considering business impact, industry belongingness, and SC function, i.e., procurement or distribution. This could simplify the implementation of SDG-oriented SCs, since companies could take into account the implications in terms of the 2030 Agenda when they decide to reengineer and reorganize their internal processes and activities, so that the choice of changing SC operations will be affected not only by business-related criteria but also by sustainability-related ones. Moreover, from the list of practices that could be potentially implemented, firms will select those fitting with both the desired business performance improvement and the SDG that they intend to support. Companies can select practices in consideration of SDG prioritization strategies and be aware of their contribution to the 2030 Agenda by investing in specific sustainability areas. This will also simplify their sustainability reporting, which can be linked to the 2030 Agenda. By employing appropriate sustainability metrics, they will measure the real contribution of their SC operations. The research group plans to publish the repository by 2022, to allow companies to access it.
Similarly, the database could be useful for researchers, policy makers, and experts in the field of sustainable development to find, consider, and study the relationship between SDGs and SC performance.

6. Conclusions and Limitations

The paper aimed at analyzing the state of the art of sustainable practices within SCs by employing data collected from the repository “Business Process Framework for Sustainability” owned by the Department of Industrial Engineering of the University of Salerno (Fisciano, Italy). From the study of the practices that can be implemented for cooperation activities with upstream and downstream SC partners, it emerged that companies have many opportunities for both enhancing their performance and supporting the 2030 Agenda. The research demonstrates that both procurement and distribution processes could be reengineered by implementing sustainable approaches considering all three dimensions of sustainability. Differences emerge in terms of number of opportunities, depending on motivations for implementing sustainable practices, industry and processes, performance achieved, and SDGs pursued.
However, the repository has various limitations. First, there is no guarantee that the implementation of the suggested practices within a SC will lead to the expected results, since some additional business-related elements could affect the likelihood of success. Second, despite the wide number of scientific papers that have been analyzed, it is necessary to extend the study to additional thousands of scientific documents to add further robustness to the repository and collect a wider number of sustainable practices. Third, the range of statistical analyses that it is possible to perform on such a repository is limited, since the variables are qualitative and nominal.
Consequently, future research will focus on the enlargement of the size of the repository, while also considering other sources, such as firms’ sustainability reports. Moreover, by 2022 the repository will be published; therefore, a significant effort will be necessary to implement a web application to allow researchers and companies easy access to the database.

Author Contributions

Conceptualization, A.C., F.M. and M.C.; data curation, A.C.; formal analysis, F.M. and A.C.; methodology, M.P. and A.C.; project administration, M.C.; supervision, F.M., M.C. and C.D.R.; validation, M.P., F.M., M.C. and C.D.R.; writing—original draft, A.C. and M.P.; writing—review and editing, F.M. and C.D.R. All authors have read and agreed to the published version of the manuscript.

Funding

This research received no external funding.

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

Not applicable.

Conflicts of Interest

The authors declare no conflict of interest.

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Figure 1. Count of sustainable practices by strategic development goals. The color of each row of the column “Goal” is the same of that used in the 2030 Agenda document.
Figure 1. Count of sustainable practices by strategic development goals. The color of each row of the column “Goal” is the same of that used in the 2030 Agenda document.
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Figure 2. Count of sustainable practices by motivation.
Figure 2. Count of sustainable practices by motivation.
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Figure 3. Count of sustainable practices by motivation macro-category.
Figure 3. Count of sustainable practices by motivation macro-category.
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Figure 4. Count of sustainable practices by industry.
Figure 4. Count of sustainable practices by industry.
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Figure 5. Count of sustainable practices by industry.
Figure 5. Count of sustainable practices by industry.
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Figure 6. Count of sustainable practices by impact.
Figure 6. Count of sustainable practices by impact.
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Figure 7. Count of sustainable practices by type of impact.
Figure 7. Count of sustainable practices by type of impact.
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Figure 8. Relationship between SDGs and sector within the procurement function.
Figure 8. Relationship between SDGs and sector within the procurement function.
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Figure 9. Relationship between SDGs and type of impact within the procurement function.
Figure 9. Relationship between SDGs and type of impact within the procurement function.
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Figure 10. Relationship between motivation and sector within the procurement function.
Figure 10. Relationship between motivation and sector within the procurement function.
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Figure 11. Relationship between motivation and type of impact within the procurement function.
Figure 11. Relationship between motivation and type of impact within the procurement function.
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Figure 12. Relationship between SDGs and sector within the distribution function.
Figure 12. Relationship between SDGs and sector within the distribution function.
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Figure 13. Relationship between SDGs and type of impact within the distribution function.
Figure 13. Relationship between SDGs and type of impact within the distribution function.
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Figure 14. Relationship between motivation and sector within the distribution function.
Figure 14. Relationship between motivation and sector within the distribution function.
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Figure 15. Relationship between motivation and type of impact within the distribution function.
Figure 15. Relationship between motivation and type of impact within the distribution function.
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Table 1. List of industries.
Table 1. List of industries.
PrimaryManufacturingTertiary
Agriculture
Mining
Manufacturing (general)
Automotive
Chemical
Construction
Electronics
Energy
Food
Petroleum
Pharmaceutical
Steel
Textile
Digital
Fashion
Healthcare
Retail
Tourism and Hospitality
Transport
Source: our elaboration from the Standard Industrial Classification Codes.
Table 2. Market vs. organizational performance.
Table 2. Market vs. organizational performance.
MarketOrganizational
Attract investors
Brand reputation
Competitive advantage
Customer satisfaction
Product/service quality/value/differentiation
Revenues
Costs reduction
Efficiency and productivity
Employee engagement
Energy efficiency
Flexibility
Information management
Innovation, knowledge, and technology management
Supply chain relationships management
Time reduction
Table 3. Labels of the variable “motivation”.
Table 3. Labels of the variable “motivation”.
Align with sustainability goals Sustainability 14 01325 i001 Sustainability 14 01325 i002 Sustainability 14 01325 i003
Biodiversity preservation Sustainability 14 01325 i002
Collaboration for sustainability Sustainability 14 01325 i001 Sustainability 14 01325 i002 Sustainability 14 01325 i003
Corporation survival and economic growth Sustainability 14 01325 i001
Emissions reduction Sustainability 14 01325 i002
Employee training and education Sustainability 14 01325 i003
Fair trade Sustainability 14 01325 i001 Sustainability 14 01325 i003
Fight corruption—Business ethics Sustainability 14 01325 i001 Sustainability 14 01325 i003
Government regulation Sustainability 14 01325 i001 Sustainability 14 01325 i002
Green certification Sustainability 14 01325 i001 Sustainability 14 01325 i002
Human/workers’ rights Sustainability 14 01325 i001 Sustainability 14 01325 i003
Loss and waste reduction Sustainability 14 01325 i002
Natural resources consumption reduction Sustainability 14 01325 i002
Promote local culture and product Sustainability 14 01325 i001 Sustainability 14 01325 i003
Promote sustainable consumer behavior Sustainability 14 01325 i002 Sustainability 14 01325 i003
Provide access to resources Sustainability 14 01325 i001 Sustainability 14 01325 i003
Public health Sustainability 14 01325 i003
Recycling and reuse—Circular economy Sustainability 14 01325 i002
Respect for the surrounding area Sustainability 14 01325 i002 Sustainability 14 01325 i003
Sustainability-Oriented Innovation (SOI) Sustainability 14 01325 i001 Sustainability 14 01325 i002 Sustainability 14 01325 i003
Sustainable energy/material usage Sustainability 14 01325 i002
Traceability and transparency Sustainability 14 01325 i001 Sustainability 14 01325 i003
Workplace health and safety Sustainability 14 01325 i001 Sustainability 14 01325 i003
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Cammarano, A.; Perano, M.; Michelino, F.; Del Regno, C.; Caputo, M. SDG-Oriented Supply Chains: Business Practices for Procurement and Distribution. Sustainability 2022, 14, 1325. https://doi.org/10.3390/su14031325

AMA Style

Cammarano A, Perano M, Michelino F, Del Regno C, Caputo M. SDG-Oriented Supply Chains: Business Practices for Procurement and Distribution. Sustainability. 2022; 14(3):1325. https://doi.org/10.3390/su14031325

Chicago/Turabian Style

Cammarano, Antonello, Mirko Perano, Francesca Michelino, Claudio Del Regno, and Mauro Caputo. 2022. "SDG-Oriented Supply Chains: Business Practices for Procurement and Distribution" Sustainability 14, no. 3: 1325. https://doi.org/10.3390/su14031325

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