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505 Results Found

  • Review
  • Open Access
8 Citations
6,456 Views
16 Pages

Towards Circular Economy: Integrating Waste Management for Renewable Energy Optimization in Zimbabwe

  • Hagreaves Kumba,
  • Denzel Christopher Makepa,
  • Anesu Nicholas Charamba and
  • Oludolapo A. Olanrewaju

12 June 2024

Many countries across the globe are not yet exploiting the full potential energy that is inherent in waste to solve their energy and waste management crisis. This review critically examines the intersection of waste management and renewable energy op...

  • Article
  • Open Access
30 Citations
9,890 Views
27 Pages

1 September 2023

Over the past half-century, scientists from many different areas have been investigating how to switch to renewable energy, especially in the context of a circular economy. Numerous articles have discussed the scientific aspects of developing technol...

  • Article
  • Open Access
14 Citations
2,864 Views
22 Pages

20 February 2025

This article investigates the interplay between renewable energy utilization and the implementation of circular economy frameworks and its role in shaping environmental sustainability across 30 provinces in China from 2000 to 2023. When employing pan...

  • Editorial
  • Open Access
12 Citations
2,598 Views
9 Pages

25 August 2024

The transition towards renewable energy is not as impressive as expected when considering the wide array of efforts undertaken. Energy-abundant countries do not have sufficient stimuli to curb the use of fossil fuels; some of them even work on increa...

  • Review
  • Open Access
2 Citations
3,526 Views
28 Pages

28 August 2025

Torrefaction, a mild thermochemical pretreatment process, is widely acknowledged as an effective strategy for enhancing the energy potential of lignocellulosic biomass. This review systematically evaluates the technological, environmental, and econom...

  • Article
  • Open Access
15 Citations
9,123 Views
11 Pages

Building a Wind Power Plant from Scrap and Raising Public Awareness for Renewable Energy Technology in a Circular Economy

  • Fabian Schoden,
  • Alina Siebert,
  • Alparslan Keskin,
  • Konstantin Herzig,
  • Majkel Straus and
  • Eva Schwenzfeier-Hellkamp

21 December 2019

Putting renewable energy to good use is necessary to deal with one of the greatest challenges of our time, namely, climate change. One problem, however, is that the technology we are using today turns into toxic waste at the end of its useful life, w...

  • Article
  • Open Access
20 Citations
5,526 Views
15 Pages

Public Attitude towards Nuclear and Renewable Energy as a Factor of Their Development in a Circular Economy Frame: Two Case Studies

  • Anzhelika Karaeva,
  • Elena Magaril,
  • Vincenzo Torretta,
  • Paolo Viotti and
  • Elena Cristina Rada

24 January 2022

Nowadays, most countries of the world are implementing the transition to the low-carbon economy which implies the need to carry out a full-scale eco-modernization of the energy sector. Green energy may be identified as one of the core concerns of ene...

  • Systematic Review
  • Open Access
2 Citations
3,209 Views
42 Pages

13 August 2025

The primary aim of this paper is to survey the literature’s coverage of integrating circular economy practices with renewable energy sources in the manufacturing sector. A systematic review of 107 peer-reviewed articles published between 2018 a...

  • Feature Paper
  • Article
  • Open Access
14 Citations
2,721 Views
25 Pages

Repurposing End-of-Life Coal Mines with Business Models Based on Renewable Energy and Circular Economy Technologies

  • Alicja Krzemień,
  • Aleksander Frejowski,
  • Gregorio Fidalgo Valverde,
  • Pedro Riesgo Fernández and
  • Silverio Garcia-Cortes

16 November 2023

This paper presents a methodology to select the most exciting business models based on renewable energy and circular economy technologies within end-of-life coal mines to help develop a renewable-based energy sector, promote sustainable local economi...

  • Feature Paper
  • Article
  • Open Access
41 Citations
10,046 Views
18 Pages

11 December 2019

This study proposes a method to estimate the appropriability of renewable energy resources at the global scale, when Earth system boundaries/needs and the human demand for chemical energy are respected. The method is based on an engineering approach,...

  • Feature Paper
  • Article
  • Open Access
23 Citations
5,192 Views
15 Pages

Due to the necessity of developing renewable energy sources, the anaerobic digestion for producing biomethane has developed significantly in the last years, since it allows to both reduce disposal treatment and produce green energy. In this field, fr...

  • Review
  • Open Access
31 Citations
6,788 Views
28 Pages

Public Policies for Renewable Energy: A Review of the Perspectives for a Circular Economy

  • Anna Manuella Melo Nunes,
  • Luiz Moreira Coelho Junior,
  • Raphael Abrahão,
  • Edvaldo Pereira Santos Júnior,
  • Flávio José Simioni,
  • Paulo Rotella Junior and
  • Luiz Célio Souza Rocha

2 January 2023

The development and implementation of public policies towards renewable energies are crucial in order to address the contemporary challenges faced by humanity. The 3Rs (reduce, reuse, and recycle), as a circular economic practice, are often cited as...

  • Article
  • Open Access
1,287 Views
28 Pages

1 September 2025

The circular economy (CE) aims to reduce environmental degradation by ensuring the continuous use of materials and energy resources, aligning with the decarbonization agenda. However, despite the rising acceptance of CE concepts, the economic and man...

  • Article
  • Open Access
7 Citations
2,923 Views
25 Pages

24 May 2024

This study aims to compare the effectiveness of renewable energy and circular economy practices in reducing environmental damage and poverty in China and the European Union (EU) by using the Autoregressive Distributed Lag (ARDL) approach and the Vect...

  • Review
  • Open Access
49 Citations
10,978 Views
41 Pages

5 September 2021

Circular economy and renewable energy infrastructure such as offshore wind farms are often assumed to be developed in synergy as part of sustainable transitions. Offshore wind is among the preferred technologies for low-carbon energy. Deployment is f...

  • Article
  • Open Access
4 Citations
1,916 Views
19 Pages

Exploring Precursors of Renewable Energy Portfolio Diversification Using TPB

  • Oana-Daniela Lupoae,
  • Riana Iren Radu,
  • Alexandru Capatina,
  • Violeta Maria Isai and
  • Nicoleta Bărbuță-Mișu

20 September 2023

Renewable energy is produced from natural sources that can regenerate quickly, such as the sun, wind, water, biomass and the earth’s heat. This implies that the resources used do not have a significant negative impact on the environment, which...

  • Review
  • Open Access
11 Citations
20,213 Views
29 Pages

The Role of Lightweight AI Models in Supporting a Sustainable Transition to Renewable Energy: A Systematic Review

  • Tymoteusz Miller,
  • Irmina Durlik,
  • Ewelina Kostecka,
  • Polina Kozlovska,
  • Marek Staude and
  • Sylwia Sokołowska

28 February 2025

The transition from fossil fuels to renewable energy (RE) sources is an essential step in mitigating climate change and ensuring environmental sustainability. However, large-scale deployment of renewables is accompanied by new challenges, including t...

  • Article
  • Open Access
70 Citations
10,798 Views
12 Pages

Based on the findings of the economic studies on the implications of industrialization in the case of growing economies, this study aims to present the economic factors that are at the basis of the development of circular economy at the European Unio...

  • Review
  • Open Access
418 Views
34 Pages

Life Cycle Optimization of Circular Industrial Processes: Advances in By-Product Recovery for Renewable Energy Applications

  • Kyriaki Kiskira,
  • Sofia Plakantonaki,
  • Nikitas Gerolimos,
  • Konstantinos Kalkanis,
  • Emmanouela Sfyroera,
  • Fernando Coelho and
  • Georgios Priniotakis

The global shift toward renewable energy and circular economy models requires industrial systems that minimize waste and recover value across entire life cycles. This review synthesizes recent advances in by-product recovery technologies supporting r...

  • Article
  • Open Access
4 Citations
2,697 Views
16 Pages

The local waste co-digestion is an interesting option to tackle in reduced and isolated areas like the islands. The islands have limited territory and scarce fuel production. Moreover, organic waste can create serious environmental problems in soil,...

  • Article
  • Open Access
3 Citations
2,443 Views
9 Pages

24 September 2021

Energy demand continues to grow with the world’s burgeoning population. Meeting energy needs through renewable sources allows for market growth with limited environmental impact, but sourcing constraints can limit production, creating industrial and...

  • Article
  • Open Access
15 Citations
5,091 Views
15 Pages

Impact of Educational Attainment on Renewable Energy Use: Evidence from Emerging Market Economies

  • Gamze Sart,
  • Yilmaz Bayar,
  • Funda Hatice Sezgin and
  • Marina Danilina

6 April 2022

Renewable energy has become a crucial factor for circular economies, sustainable development, and the environment given the limited non-renewable energy reserves and global environmental degradation mainly resulting from non-renewable energy use. Thi...

  • Article
  • Open Access
356 Views
31 Pages

2 January 2026

This study investigates how economic development interacts with sustainability performance in the European Union, focusing on the structural and technological factors that shape progress in the green transition. Using Eurostat data for 27 EU member s...

  • Review
  • Open Access
567 Views
20 Pages

Measuring Circular Economy Indicator in Hydropower Refurbishment

  • Andreea Loredana Rhazzali (Birgovan),
  • Elena Simina Lakatos,
  • Gabriel Minea,
  • Lucian-Ionel Cioca,
  • Madalina Barnisca,
  • Sara Ferenci,
  • Lorand Szabo and
  • Radu Adrian Munteanu

11 November 2025

This paper provides a comprehensive analysis of the development, implementation, and evolution of the circular economy indicator (CEI) in the context of hydroelectric turbine refurbishment over the past five decades. By systematically examining publi...

  • Article
  • Open Access
1,659 Views
27 Pages

8 February 2025

The modern construction of transmission networks for transporting energy resources (e.g., crude oil, gas, hydrogen) or electricity is increasingly being carried out using trenchless technologies. Trenchless methods significantly reduce the need for e...

  • Article
  • Open Access
28 Citations
8,432 Views
16 Pages

5 February 2020

This paper explores the implementation of European Union (EU) Cohesion Policy in Portugal during the 2014–2020 programming period (Portugal 2020) and its contribution to promoting sustainable territorial development. It starts with an anatomiza...

  • Article
  • Open Access
3 Citations
3,881 Views
17 Pages

This article is focusing on the dynamism of the Third Industrial Revolution (TIR) in the region Hauts-de-France between 2013 and 2018. Region Hauts-de-France has been a forerunner in setting up a proactive policy in favour of the TIR. It provides a r...

  • Article
  • Open Access
34 Citations
8,661 Views
27 Pages

How Do Industrial Ecology, Energy Efficiency, and Waste Recycling Technology (Circular Economy) Fit into China’s Plan to Protect the Environment? Up to Speed

  • Sasmoko Sasmoko,
  • Muhammad Zaheer Akhtar,
  • Haroon ur Rashid Khan,
  • Sriyanto Sriyanto,
  • Mohd Khata Jabor,
  • Awais Rashid and
  • Khalid Zaman

7 November 2022

The challenges of environmental protection are especially prevalent in South and Southeast Asian nations, which adversely affects their sustainable developmental goals. During the last two decades, increased industrialization and urbanization have ca...

  • Review
  • Open Access
14 Citations
5,257 Views
29 Pages

28 April 2025

Rapid population growth, climate change, and resource depletion pose significant challenges to global food production, demanding sustainable solutions. A Life-Cycle Assessment (LCA) provides a structured framework for evaluating the environmental imp...

  • Article
  • Open Access
26 Citations
5,659 Views
15 Pages

Life Cycle Assessment of Biofuels Production Processes in Viticulture in the Context of Circular Economy

  • Eniko Kovacs,
  • Maria-Alexandra Hoaghia,
  • Lacrimioara Senila,
  • Daniela Alexandra Scurtu,
  • Cerasel Varaticeanu,
  • Cecilia Roman and
  • Diana Elena Dumitras

30 May 2022

Globally, as the population and the living standards expanded, so did the use of energy and materials. Renewable energy resources are being used to help address the energy issue and reduce greenhouse gas emissions (GHG). Because lignocellulosic bioma...

  • Article
  • Open Access
9 Citations
5,497 Views
20 Pages

19 February 2025

Under the global impetus toward carbon peak and carbon neutrality, large-scale renewable energy integration has become a key driver in transforming traditional power grids into new power systems. Meanwhile, the growing adoption of advanced artificial...

  • Article
  • Open Access
2,827 Views
18 Pages

Renewable Energy from Cocoa Waste Biomass in Ecuador’s Coastal Region: Advancing Sustainable Supply Chains

  • María Agustina Montesdeoca Chávez,
  • Pierina Dayana Ruiz Zambrano,
  • José Miguel Giler Molina and
  • César Iván Álvarez Mendoza

25 June 2025

Coastal regions of Ecuador, particularly Esmeraldas and Manabí, face significant challenges related to energy access, waste management, and sustainable agricultural development. This study evaluates the renewable energy potential of cocoa wast...

  • Article
  • Open Access
8 Citations
3,151 Views
12 Pages

19 February 2024

This article proposes a conceptual model for integrating and categorizing urban projects aimed at achieving carbon neutrality. This model comprises five interconnected levers: energy efficiency, renewable energy production and consumption, electrific...

  • Article
  • Open Access
38 Citations
5,214 Views
27 Pages

Does Circular Economy Contribute to Smart Cities’ Sustainable Development?

  • Gheorghița Dincă,
  • Ana-Angela Milan,
  • Maria Letiția Andronic,
  • Anna-Maria Pasztori and
  • Dragoș Dincă

The purpose of this research paper is to investigate and identify the factors which can support the development of one characteristic of smart cities, namely, the smart environment. More specifically, the main goal is to measure the extent to which a...

  • Article
  • Open Access
5 Citations
2,994 Views
19 Pages

11 May 2023

Biodegradable waste from households, companies, and gastronomy is not utilized in large Polish agglomerations for the production of biogas. Determining the biogas production potential in a selected agglomeration will enable the implementation of circ...

  • Article
  • Open Access
21 Citations
3,128 Views
11 Pages

Smart Transition to Climate Management of the Green Energy Transmission Chain

  • Olena Borysiak,
  • Tomasz Wołowiec,
  • Grzegorz Gliszczyński,
  • Vasyl Brych and
  • Oleksandr Dluhopolskyi

14 September 2022

Climate challenges in recent decades have forced a change in attitude towards forms of environmental interaction. The International Climate Conference COP26 evidences the relevance of the climate issue at the global level in Glasgow (November 2021)....

  • Article
  • Open Access
108 Citations
15,921 Views
28 Pages

23 June 2021

The chemical and petrochemical sector relies on fossil fuels and feedstocks, and is a major source of carbon dioxide (CO2) emissions. The techno-economic potential of 20 decarbonisation options is assessed. While previous analyses focus on the produc...

  • Article
  • Open Access
18 Citations
3,896 Views
15 Pages

14 May 2021

The necessity of developing renewable energy sources has contributed to increasing interest in developing the anaerobic digestion for producing biomethane since it both provides green energy and reduces disposal treatment. In this regard, to assure e...

  • Article
  • Open Access
25 Citations
5,384 Views
27 Pages

12 July 2021

The production and supply chain management of biofuels from organic waste as raw material has been identified as a promising strategy in the field of renewable energies and circular economy initiatives. This industry involves complex tasks such as st...

  • Feature Paper
  • Article
  • Open Access
4 Citations
1,863 Views
13 Pages

Green Transformation of Mining towards Energy Self-Sufficiency in a Circular Economy—A Case Study

  • Małgorzata Magdziarczyk,
  • Andrzej Chmiela,
  • Weijian Su and
  • Adam Smolinski

31 July 2024

This article presents the concept of green transformation of the coal mining sector. Pump stations that belong to Spółka Restrukturyzacji Kopalń S.A. (SRK S.A., Bytom, Poland) pump out approximately 100 million m3 of mine water annua...

  • Article
  • Open Access
3 Citations
3,115 Views
22 Pages

Wastewater treatment plants (WWTPs) are crucial for environmental protection and public health; however, they are among the most energy-intensive facilities in the water sector. This study examines the correlation between energy consumption and treat...

  • Article
  • Open Access
1,144 Views
18 Pages

Sustainable Journeys: Navigating the Circular Economy Wave in EU Tourism for a Greener Future

  • Egla Mansi,
  • Nerajda Feruni,
  • Yan Ren,
  • Eglantina Hysa and
  • Valentina Ndou

11 September 2025

This research explores the complex relationships between tourism, economic factors, environmental sustainability, and transportation infrastructure within the European Union (EU), as the tourist scene changes globally. Our research uses a comprehensi...

  • Proceeding Paper
  • Open Access
9 Citations
9,389 Views
6 Pages

12 August 2023

The coffee by-product market represents a transformative paradigm in the coffee industry, capitalizing on previously overlooked resources and generating economic value through sustainable practices. We will explore the multifaceted opportunities and...

  • Article
  • Open Access
3 Citations
5,054 Views
12 Pages

Sustainable Production of Coffee Husk Pellets: Applying Circular Economy in Waste Management and Renewable Energy Production

  • Angélica de Cassia Oliveira Carneiro,
  • Antonio José Vinha Zanuncio,
  • Amélia Guimarães Carvalho,
  • Júlia Almeida Cunha Guimarães Jorge,
  • Raquel Julia Cipriano dos Santos,
  • Iara Fontes Demuner,
  • Letícia Costa Peres,
  • Shoraia Germani Winter,
  • Vinícius Resende de Castro and
  • Solange de Oliveira Araújo

31 January 2025

Improper waste disposal is one of the leading causes of environmental pollution, impacting soil, water, and air quality. In coffee plantations, each kilogram of beans produced generates an equal amount of husk, emphasizing the urgent need for sustain...

  • Article
  • Open Access
6 Citations
14,910 Views
30 Pages

This study aimed to quantify and evaluate the main environmental impacts generated in each phase of tofu production as well as its main co-products (soy milk, food integrators, etc.) and by-products (straw, hulls, etc.) from organic and conventional...

  • Review
  • Open Access
131 Citations
20,511 Views
27 Pages

26 May 2020

Economic activity today is still based on a linear model of production and consumption: extract/produce and consume/throw, which exhausts natural resources and generates waste. The current linear economy does not optimize materials nor favour their r...

  • Article
  • Open Access
7 Citations
3,867 Views
15 Pages

What Does the Circular Household of the Future Look Like? An Expert-Based Exploration

  • Saskia Keesstra,
  • Tamara Metze,
  • Linda Ofori,
  • Marleen Buizer and
  • Saskia Visser

12 July 2022

Circularity is a necessity for the future of our society but individual households often find it difficult to contribute to this transition. This paper presents possible future visions of circular (and climate-neutral) households, inside and outside...

  • Review
  • Open Access
14 Citations
19,556 Views
69 Pages

Upcycling Coffee Waste: Key Industrial Activities for Advancing Circular Economy and Overcoming Commercialization Challenges

  • Kanokthip Pongsiriyakul,
  • Peerawat Wongsurakul,
  • Worapon Kiatkittipong,
  • Aerwadee Premashthira,
  • Kulapa Kuldilok,
  • Vesna Najdanovic-Visak,
  • Sushil Adhikari,
  • Patrick Cognet,
  • Tetsuya Kida and
  • Suttichai Assabumrungrat
Processes2024, 12(12), 2851;https://doi.org/10.3390/pr12122851 
(registering DOI)

12 December 2024

The valorization of coffee waste has gained traction due to its potential to generate valuable products, lessen its impact on the environment, and promote sustainability. This review examines the diverse range of coffee waste, including pulp, husk, m...

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