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Towards Sustainable Waste Systems: Advancing Solutions for Circular Economy, Resource Recovery, and Environmental Protection

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Waste and Recycling".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 779

Special Issue Editor


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Guest Editor
Department of Environmental Protection, Faculty of Engineering and Technical Sciences, John Paul II Catholic University of Lublin, Lublin, Poland
Interests: waste (waste morphology, waste properties, rational waste management); circular economy; waste management through the production of new materials; sewage sludge
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The aim of this issue is to broaden knowledge of the circular economy in environmental, social, and economic terms, with a particular focus on waste management. The scope of this special issue will certainly complement the current literature as it deals with the circular economy as a system that aims to eliminate waste and pollution through the efficient use of resources. The reuse and recycling of products slows down the use of natural resources, reduces the destruction of landscapes and habitats, and helps to limit the loss of biodiversity. Solutions should be promoted that support the natural landscape and environmental protection in a holistic sense for the entire environmental components: water, air, soil.

Creating more efficient and sustainable products from the outset would help reduce energy and resource consumption. Switching to more reliable products that can be reused, refurbished and repaired would reduce waste. The circular economy of packaging waste helps to address the problem of excessive packaging and improve packaging design to promote reuse and recycling.

Particular attention should be paid to problematic waste such as small fraction waste, for which there are no designed recycling systems and which still end up in landfills. Attention should also be paid to waste from renewable energy sources as this problem will grow over time.

The supply of key raw materials is limited, so recycling of raw materials reduces supply risks such as price volatility, availability issues and dependence on imports. Undoubtedly, the use of AI and GIS systems contributes to the rational planning, design and construction of waste facilities.

This treatment of the topic of the closed-loop economy will certainly broaden the existing literature and show to a greater extent the opportunities and barriers for its implementation towards sustainable waste systems.

Dr. Anna Gronba-Chyła
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • barriers to a circular economy
  • opportunities of a circular economy
  • sustainability
  • waste management
  • problematic waste

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Published Papers (1 paper)

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Research

26 pages, 2031 KB  
Article
Sustainable Supply Chain Management: Optimal Entry Strategies for Marine Plastic Recycling
by Kai Wang, Xu Wang and Lei Zhang
Sustainability 2026, 18(4), 2025; https://doi.org/10.3390/su18042025 - 16 Feb 2026
Viewed by 391
Abstract
The market for remanufactured products made from marine plastic waste is expanding rapidly, but the recycling rate of this waste remains strikingly low. This disconnect forces conventional plastic recycling firms to make a consequential strategic choice: enter the marine plastic recycling supply segment [...] Read more.
The market for remanufactured products made from marine plastic waste is expanding rapidly, but the recycling rate of this waste remains strikingly low. This disconnect forces conventional plastic recycling firms to make a consequential strategic choice: enter the marine plastic recycling supply segment by expanding to build market power or enter by competing as a specialized supplier. To examine this trade-off, this paper develops a two-period game-theoretic model that contrasts entry strategies and performance under monopolistic and competitive market structures. We derive and compare equilibrium pricing, quantities, and profits for the relevant supply chain participants in both settings and then characterize the conditions under which one entry mode dominates the other. The results indicate that neither the preferred entry strategy nor the profitability that follows is driven by a single parameter. Instead, outcomes are shaped by the joint effects of consumer tastes, remanufacturing costs, and the scale of capacity investment cost required for entry. When consumers show a stronger preference for conventional remanufactured products, a supplier pursuing monopolistic expansion can earn higher profits by offering a more flexible product portfolio. By contrast, when the cost of remanufacturing marine plastics and the associated capacity investment cost are relatively low, the environment favors a specialized, competitively oriented entry strategy. Profit allocation within the supply chain is also closely tied to remanufacturer costs: as these costs fall, suppliers are able to appropriate a larger share of total profits. Overall, the analysis provides a theoretical basis for entry decisions in the emerging marine plastic recycling industry and offers actionable guidance for firms facing different demand and cost conditions across market structures. Full article
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