Pub Date : 2025-07-19DOI: 10.1016/j.cec.2025.100156
Kseniia Shkirman , Anna Stoppato , Fabio Giussani , Simon Pezzutto
The built environment in urban areas contributes significantly to global waste generation through construction and demolition activities, highlighting the need for circular economy strategies to ensure sustainable development. Digital technologies offer fast and reliable methods to track material flows and improve resource efficiency. This study proposes a novel approach that integrates data from OpenStreetMap (OSM) and the Urban Atlas for land-use identification. The material stock (MS) is estimated via a geographic information system (GIS) to analyse the spatial characteristics of buildings, combined with material intensity (MI) data to assess the mass of materials within structures. Together with the quantification of material stock, hotspots of construction materials within the building stock are identified. When applied to the case study of Bolzano/Bozen, Italy, this approach estimated 130 tonnes per capita of accumulated building stock in the city and 40 tonnes per capita of material stock in infrastructure networks. This remote sensing methodology provides detailed insights into the quantity and distribution of materials in buildings and networks. The openness and availability of OSM data, as well as their independence from cadastral records, make this approach particularly advantageous for obtaining input data for the life cycle assessment (LCA) of buildings and the development of waste management strategies.
{"title":"Investigating circularity in the construction and demolition sector through remote sensing: A case study of Bolzano/Bozen, Italy","authors":"Kseniia Shkirman , Anna Stoppato , Fabio Giussani , Simon Pezzutto","doi":"10.1016/j.cec.2025.100156","DOIUrl":"10.1016/j.cec.2025.100156","url":null,"abstract":"<div><div>The built environment in urban areas contributes significantly to global waste generation through construction and demolition activities, highlighting the need for circular economy strategies to ensure sustainable development. Digital technologies offer fast and reliable methods to track material flows and improve resource efficiency. This study proposes a novel approach that integrates data from OpenStreetMap (OSM) and the Urban Atlas for land-use identification. The material stock (MS) is estimated via a geographic information system (GIS) to analyse the spatial characteristics of buildings, combined with material intensity (MI) data to assess the mass of materials within structures. Together with the quantification of material stock, hotspots of construction materials within the building stock are identified. When applied to the case study of Bolzano/Bozen, Italy, this approach estimated 130 tonnes per capita of accumulated building stock in the city and 40 tonnes per capita of material stock in infrastructure networks. This remote sensing methodology provides detailed insights into the quantity and distribution of materials in buildings and networks. The openness and availability of OSM data, as well as their independence from cadastral records, make this approach particularly advantageous for obtaining input data for the life cycle assessment (LCA) of buildings and the development of waste management strategies.</div></div>","PeriodicalId":100245,"journal":{"name":"Circular Economy","volume":"4 3","pages":"Article 100156"},"PeriodicalIF":0.0,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144739205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
China's “zero-waste city” (ZWC) pilot program, initiated in 2018, has driven innovative practices in industrial solid waste (ISW) management across diverse urban contexts. This study categorizes cities into resource-output, manufacturing-oriented, and comprehensive types to propose tailored strategies that address unique industrial challenges while promoting sustainability. Resource-output cities prioritize ecological restoration through the transformation of abandoned mining sites, repurposing waste materials to restore degraded environments and support local economic development. Manufacturing-oriented cities focus on green industrial upgrades and circular economy models to enhance the comprehensive utilization of waste, reduce generation intensity, and foster market competitiveness for recycled products. Comprehensive cities, often large urban centers, have embraced digital technologies to optimize the precision management of ISW, thereby enhancing regulatory efficiency and resource utilization. These targeted approaches implemented thus far have let to measurable reductions in ISW generation, improved resource recovery, and notable economic co-benefits. The insights drawn from China's evolving ZWC framework not only contribute to a more sustainable and efficient waste management system domestically but also provide a valuable reference for international regions seeking to integrate industrial development with environmental protection.
{"title":"Insights and practices for industrial solid waste management under “zero-waste city” construction in China","authors":"Qifei Huang, Tong Zhao, Mingsong Lin, Weishi Li, Qi Zhou, Chao Chen","doi":"10.1016/j.cec.2025.100155","DOIUrl":"10.1016/j.cec.2025.100155","url":null,"abstract":"<div><div>China's “zero-waste city” (ZWC) pilot program, initiated in 2018, has driven innovative practices in industrial solid waste (ISW) management across diverse urban contexts. This study categorizes cities into resource-output, manufacturing-oriented, and comprehensive types to propose tailored strategies that address unique industrial challenges while promoting sustainability. Resource-output cities prioritize ecological restoration through the transformation of abandoned mining sites, repurposing waste materials to restore degraded environments and support local economic development. Manufacturing-oriented cities focus on green industrial upgrades and circular economy models to enhance the comprehensive utilization of waste, reduce generation intensity, and foster market competitiveness for recycled products. Comprehensive cities, often large urban centers, have embraced digital technologies to optimize the precision management of ISW, thereby enhancing regulatory efficiency and resource utilization. These targeted approaches implemented thus far have let to measurable reductions in ISW generation, improved resource recovery, and notable economic co-benefits. The insights drawn from China's evolving ZWC framework not only contribute to a more sustainable and efficient waste management system domestically but also provide a valuable reference for international regions seeking to integrate industrial development with environmental protection.</div></div>","PeriodicalId":100245,"journal":{"name":"Circular Economy","volume":"4 3","pages":"Article 100155"},"PeriodicalIF":0.0,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-07-18DOI: 10.1016/j.cec.2025.100154
Yi Li , Yangyang Liang , Danfeng Yu , Liujie Xu , Qingbin Song
As a significant global issue, food waste has garnered considerable public attention because of food security and environmental sustainability. However, the current study overlooks the food waste behavior of university students in university canteens. This study, which is based on a systematic questionnaire survey of 1229 university students in Macao and Zhuhai, adopts the extended theory of planned behavior (E-TPB) to investigate the key factors influencing university students' food waste behaviors in school canteens by incorporating four additional variables. The results demonstrate that subjective norm emerged as the strongest predictor of university students' intentions, whereas intentions remained the strongest predictor of university students' food waste behavior (R2 = 0.641). Among the four extended hypotheses, the economic impact and cognition of food waste have a significant effect on university students’ food waste behavior. This study revealed that increasing the level of awareness and positive attitudes toward food waste can help reduce food waste. Compared with those in Macao, the food waste behavior of respondents in Zhuhai was more influenced by the level of the economy. These research outcomes provide effective strategies for minimizing food waste within university canteens.
{"title":"Reducing food waste behaviors from the viewpoint of university students through the E-TPB model","authors":"Yi Li , Yangyang Liang , Danfeng Yu , Liujie Xu , Qingbin Song","doi":"10.1016/j.cec.2025.100154","DOIUrl":"10.1016/j.cec.2025.100154","url":null,"abstract":"<div><div>As a significant global issue, food waste has garnered considerable public attention because of food security and environmental sustainability. However, the current study overlooks the food waste behavior of university students in university canteens. This study, which is based on a systematic questionnaire survey of 1229 university students in Macao and Zhuhai, adopts the extended theory of planned behavior (E-TPB) to investigate the key factors influencing university students' food waste behaviors in school canteens by incorporating four additional variables. The results demonstrate that subjective norm emerged as the strongest predictor of university students' intentions, whereas intentions remained the strongest predictor of university students' food waste behavior (R<sup>2</sup> = 0.641). Among the four extended hypotheses, the economic impact and cognition of food waste have a significant effect on university students’ food waste behavior. This study revealed that increasing the level of awareness and positive attitudes toward food waste can help reduce food waste. Compared with those in Macao, the food waste behavior of respondents in Zhuhai was more influenced by the level of the economy. These research outcomes provide effective strategies for minimizing food waste within university canteens.</div></div>","PeriodicalId":100245,"journal":{"name":"Circular Economy","volume":"4 3","pages":"Article 100154"},"PeriodicalIF":0.0,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144739204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-07-16DOI: 10.1016/j.cec.2025.100153
Yushuang Li , Guijuan Shan , Shuoshuo Hao , Jian Li , Jinhui Li
China's “Zero-waste Cities” initiative, launched in 2018, represents a transformative strategy to address escalating solid waste challenges through systemic governance and circular economy principles. This study systematically examines the initiative's framework, including pilot project deployment, policy evolution, and scalability during the 14th Five-Year Plan (2021–2025). The phased implementation prioritized sector-specific models—industrial symbiosis, agricultural circularity, and smart municipal waste networks—to transition from risk control to green transformation. A SWOT analysis identifies strengths in centralized governance and technological innovation while highlighting challenges such as regional disparities in infrastructure and low market acceptance of recycled materials. Strategic recommendations emphasize data-driven governance, fiscal incentives for circular businesses, and cross-sector collaboration to bridge implementation gaps. This research underscores the initiative's dual impact: mitigating solid waste pressures and offering globally replicable insights. The framework provides a blueprint for sustainable urbanization, contributing actionable strategies to the United Nations Sustainable Development Agenda through scalable models of circular economy integration.
{"title":"Systemic governance and circular economy synergies: A multidimensional analysis of China's “Zero-waste Cities” initiative","authors":"Yushuang Li , Guijuan Shan , Shuoshuo Hao , Jian Li , Jinhui Li","doi":"10.1016/j.cec.2025.100153","DOIUrl":"10.1016/j.cec.2025.100153","url":null,"abstract":"<div><div>China's “Zero-waste Cities” initiative, launched in 2018, represents a transformative strategy to address escalating solid waste challenges through systemic governance and circular economy principles. This study systematically examines the initiative's framework, including pilot project deployment, policy evolution, and scalability during the 14th Five-Year Plan (2021–2025). The phased implementation prioritized sector-specific models—industrial symbiosis, agricultural circularity, and smart municipal waste networks—to transition from risk control to green transformation. A SWOT analysis identifies strengths in centralized governance and technological innovation while highlighting challenges such as regional disparities in infrastructure and low market acceptance of recycled materials. Strategic recommendations emphasize data-driven governance, fiscal incentives for circular businesses, and cross-sector collaboration to bridge implementation gaps. This research underscores the initiative's dual impact: mitigating solid waste pressures and offering globally replicable insights. The framework provides a blueprint for sustainable urbanization, contributing actionable strategies to the United Nations Sustainable Development Agenda through scalable models of circular economy integration.</div></div>","PeriodicalId":100245,"journal":{"name":"Circular Economy","volume":"4 3","pages":"Article 100153"},"PeriodicalIF":0.0,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144757374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-07-08DOI: 10.1016/j.cec.2025.100152
Denes de Souza Barros , Michael Douglas Roque Lima , Jonas Massuque , Elvis Vieira dos Santos , Bruna Duque Guirardi , Ananias Francisco Dias Junior , Lina Bufalino , Edgar A. Silveira , Angélica de Cássia Oliveira Carneiro , Paulo Fernando Trugilho , Thiago de Paula Protásio
This study integrates legal timber harvesting, conservation efforts, and circular economy concepts in Amazonia by converting wood waste into charcoal via real-scale kilns in remote regions. Emphasizing the benefits of species-based segregation, residues from 23 tropical species were classified via principal component analysis into four distinct Groups (G1–G4), whereas G5 represented traditional mixed-species carbonization. A novel approach was used to assess the impact of species-based segregation on charcoal quality, combustion behavior, and logistical safety (spontaneous combustion risk) through proximate and calorific analyses, thermogravimetric analysis, combustion indices, and self-combustion experiments. To support the selection of high-performance and safer biofuels, multi-criteria decision analysis (MCDA) was applied to systematically rank charcoal groups by integrating physicochemical and thermal performance indicators. The segregated groups exhibited variations in fixed carbon (69.61–73.92%, dry basis (db)), volatile matter (21.87–27.58%, db), ash content (1.20–6.03%, db), and higher heating value (26.5–30.0 MJ·kg−1). G1 (Dinizia excelsa) had the highest fixed carbon content, lowest ash content, and superior combustion behavior, whereas G5 had a lower ignition temperature and greater reactivity. Spontaneous combustion tests revealed no self-ignition in G1 and G4, whereas G2, G3, and G5 presented incidence rates of 75%, 50%, and 25%, respectively. MCDA enables a robust, multi-indicator evaluation of charcoal performance, producing a ranking (G1 > G4 > G5 > G3 > G2) that is consistent with the spontaneous combustion results. These findings highlight the potential of selective biomass utilization to produce higher-quality, safer, and more sustainable charcoal, reinforcing its role in circular bioenergy systems in the Amazon.
{"title":"Advancing circular economy in Amazonian forest management: A comparative study of the effects of wood waste segregation and traditional carbonization on charcoal properties, combustibility, and spontaneous combustion risk","authors":"Denes de Souza Barros , Michael Douglas Roque Lima , Jonas Massuque , Elvis Vieira dos Santos , Bruna Duque Guirardi , Ananias Francisco Dias Junior , Lina Bufalino , Edgar A. Silveira , Angélica de Cássia Oliveira Carneiro , Paulo Fernando Trugilho , Thiago de Paula Protásio","doi":"10.1016/j.cec.2025.100152","DOIUrl":"10.1016/j.cec.2025.100152","url":null,"abstract":"<div><div>This study integrates legal timber harvesting, conservation efforts, and circular economy concepts in Amazonia by converting wood waste into charcoal via real-scale kilns in remote regions. Emphasizing the benefits of species-based segregation, residues from 23 tropical species were classified via principal component analysis into four distinct Groups (G1–G4), whereas G5 represented traditional mixed-species carbonization. A novel approach was used to assess the impact of species-based segregation on charcoal quality, combustion behavior, and logistical safety (spontaneous combustion risk) through proximate and calorific analyses, thermogravimetric analysis, combustion indices, and self-combustion experiments. To support the selection of high-performance and safer biofuels, multi-criteria decision analysis (MCDA) was applied to systematically rank charcoal groups by integrating physicochemical and thermal performance indicators. The segregated groups exhibited variations in fixed carbon (69.61–73.92%, dry basis (db)), volatile matter (21.87–27.58%, db), ash content (1.20–6.03%, db), and higher heating value (26.5–30.0 MJ·kg<sup>−1</sup>). G1 (<em>Dinizia excelsa</em>) had the highest fixed carbon content, lowest ash content, and superior combustion behavior, whereas G5 had a lower ignition temperature and greater reactivity. Spontaneous combustion tests revealed no self-ignition in G1 and G4, whereas G2, G3, and G5 presented incidence rates of 75%, 50%, and 25%, respectively. MCDA enables a robust, multi-indicator evaluation of charcoal performance, producing a ranking (G1 > G4 > G5 > G3 > G2) that is consistent with the spontaneous combustion results. These findings highlight the potential of selective biomass utilization to produce higher-quality, safer, and more sustainable charcoal, reinforcing its role in circular bioenergy systems in the Amazon.</div></div>","PeriodicalId":100245,"journal":{"name":"Circular Economy","volume":"4 3","pages":"Article 100152"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-14DOI: 10.1016/j.cec.2025.100144
Chaoyue Wu , Tao Tan , Jun Zhang , Yi Wang , Hu Liu , Min Du
Chemical industry parks serve as key drivers of economic development and simultaneously are significant sources of industrial solid and hazardous waste. In 2023, Jiangsu Province focused on chemical industry parks and explored a new model for the construction of “zero-waste park” to promote high-quality development of these industrial zones. Nanjing took the lead in advancing the “zero-waste park” construction at Nanjing Jiangbei New Materials High-Tech Park (formerly Nanjing Chemical Industrial Park). Throughout the process of the “zero-waste park” construction, the park continuously leveraged its potential and achieved remarkable results in terms of waste reduction, resource recovery, and harmless disposal by focusing on five key areas: institutional development, source reduction, technological innovation, mechanism improvement, and public engagement. These efforts resulted in significant improvements in waste management practices, a continuously enhanced regulatory framework, and heightened public awareness and support for the “zero waste” concept. This study aims to provide a reference for the “zero-waste” construction of other parks by analyzing the construction pathways, achievements, and existing challenges of typical “zero-waste park” in Nanjing.
{"title":"Exploration and results analysis of the construction paths of “zero-waste park” in Nanjing's typical chemical industrial park","authors":"Chaoyue Wu , Tao Tan , Jun Zhang , Yi Wang , Hu Liu , Min Du","doi":"10.1016/j.cec.2025.100144","DOIUrl":"10.1016/j.cec.2025.100144","url":null,"abstract":"<div><div>Chemical industry parks serve as key drivers of economic development and simultaneously are significant sources of industrial solid and hazardous waste. In 2023, Jiangsu Province focused on chemical industry parks and explored a new model for the construction of “zero-waste park” to promote high-quality development of these industrial zones. Nanjing took the lead in advancing the “zero-waste park” construction at Nanjing Jiangbei New Materials High-Tech Park (formerly Nanjing Chemical Industrial Park). Throughout the process of the “zero-waste park” construction, the park continuously leveraged its potential and achieved remarkable results in terms of waste reduction, resource recovery, and harmless disposal by focusing on five key areas: institutional development, source reduction, technological innovation, mechanism improvement, and public engagement. These efforts resulted in significant improvements in waste management practices, a continuously enhanced regulatory framework, and heightened public awareness and support for the “zero waste” concept. This study aims to provide a reference for the “zero-waste” construction of other parks by analyzing the construction pathways, achievements, and existing challenges of typical “zero-waste park” in Nanjing.</div></div>","PeriodicalId":100245,"journal":{"name":"Circular Economy","volume":"4 2","pages":"Article 100144"},"PeriodicalIF":0.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-30DOI: 10.1016/j.cec.2025.100143
Claire Montocchio , Antaya March , Rouane Brokensha , Mialy Andriamahefazafy , Christophe Schuman , Pierre Failler , He Yuan
The concept of a circular economy has gained momentum in recent years and presents potential for African and Indian Ocean islands. Although some businesses and governments have adopted circular economy practices, these efforts are not yet widespread, and there is limited support to fully unlock the potential of circular economy in these countries. This paper proposes a roadmap for African and Indian Ocean islands state governments and businesses to promote circular economy development. The roadmap uses in-country stakeholder consultations and experiences to propose actions to fill legal gaps while fostering the integration and harmonisation of actions towards circular economy; to enhance circular economy literacy at all levels through education and awareness campaigns; to improve waste collection, sorting, recycling, and treatment; to improve monitoring capabilities and prevent harmful practices by introducing, supporting, and upscaling activities that promote better natural flow management and regeneration; and to support businesses structurally and financially to adopt or transition to circular business models. The roadmap's applicability in national contexts is discussed, considering the differences between countries and the small-scale nature of most African and Indian Ocean islands. The paper also suggests the possibility of extending the roadmap to other small island developing states (SIDSs) and emphasises the vital role of regional economic communities and the African Union in advancing the circular economy. Additionally, the circular economy roadmap is discussed in relation to the blue economy.
{"title":"A circular economy roadmap for African and Indian Ocean developing island states","authors":"Claire Montocchio , Antaya March , Rouane Brokensha , Mialy Andriamahefazafy , Christophe Schuman , Pierre Failler , He Yuan","doi":"10.1016/j.cec.2025.100143","DOIUrl":"10.1016/j.cec.2025.100143","url":null,"abstract":"<div><div>The concept of a circular economy has gained momentum in recent years and presents potential for African and Indian Ocean islands. Although some businesses and governments have adopted circular economy practices, these efforts are not yet widespread, and there is limited support to fully unlock the potential of circular economy in these countries. This paper proposes a roadmap for African and Indian Ocean islands state governments and businesses to promote circular economy development. The roadmap uses in-country stakeholder consultations and experiences to propose actions to fill legal gaps while fostering the integration and harmonisation of actions towards circular economy; to enhance circular economy literacy at all levels through education and awareness campaigns; to improve waste collection, sorting, recycling, and treatment; to improve monitoring capabilities and prevent harmful practices by introducing, supporting, and upscaling activities that promote better natural flow management and regeneration; and to support businesses structurally and financially to adopt or transition to circular business models. The roadmap's applicability in national contexts is discussed, considering the differences between countries and the small-scale nature of most African and Indian Ocean islands. The paper also suggests the possibility of extending the roadmap to other small island developing states (SIDSs) and emphasises the vital role of regional economic communities and the African Union in advancing the circular economy. Additionally, the circular economy roadmap is discussed in relation to the blue economy.</div></div>","PeriodicalId":100245,"journal":{"name":"Circular Economy","volume":"4 2","pages":"Article 100143"},"PeriodicalIF":0.0,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-17DOI: 10.1016/j.cec.2025.100141
Ova Candra Dewi , Nasruddin , Nisrina Dewi Salsabila , Kartika Rahmasari , Gina Khairunnisa
Indonesia, a seismically active country, frequently experiences earthquakes, yet the potential for reusing recovered debris in post-disaster housing remains largely unexplored. This study upgrades Indonesia's permanent post-disaster housing by using recovered debris as an alternative to new materials, aiming to reduce the environmental impact (EI) and minimize material costs. The EI analysis was conducted via life cycle assessment (LCA) at the cradle-to-gate stages for four types of permanent post-disaster houses (Houses A–D) built after the 2022 earthquake in Cianjur, Indonesia. The initial assessment identified House D as having the lowest EI. This study assesses the replacement of autoclaved aerated concrete (AAC), non-structural steel, and iron sheets in Houses A–C to minimize their EI, aligning them more closely with House D's values. Optimization scenarios were formulated via response surface methodology (RSM) to determine material combinations that reduce the EI while minimizing costs. Hence, by replacing AAC with recovered brick debris, Houses A–C achieved reductions of approximately 23% in global warming potential, 30% in abiotic depletion potential, and 20% in acidification potential while also lowering material costs by 3%–5%. This finding represents the initial step in exploring the reduction of new materials and reuse of recovered debris to decrease the EI of post-disaster housing.
{"title":"Building circularity potential for post-disaster housing: LCA, cost evaluation, and material optimization","authors":"Ova Candra Dewi , Nasruddin , Nisrina Dewi Salsabila , Kartika Rahmasari , Gina Khairunnisa","doi":"10.1016/j.cec.2025.100141","DOIUrl":"10.1016/j.cec.2025.100141","url":null,"abstract":"<div><div>Indonesia, a seismically active country, frequently experiences earthquakes, yet the potential for reusing recovered debris in post-disaster housing remains largely unexplored. This study upgrades Indonesia's permanent post-disaster housing by using recovered debris as an alternative to new materials, aiming to reduce the environmental impact (EI) and minimize material costs. The EI analysis was conducted via life cycle assessment (LCA) at the cradle-to-gate stages for four types of permanent post-disaster houses (Houses A–D) built after the 2022 earthquake in Cianjur, Indonesia. The initial assessment identified House D as having the lowest EI. This study assesses the replacement of autoclaved aerated concrete (AAC), non-structural steel, and iron sheets in Houses A–C to minimize their EI, aligning them more closely with House D's values. Optimization scenarios were formulated via response surface methodology (RSM) to determine material combinations that reduce the EI while minimizing costs. Hence, by replacing AAC with recovered brick debris, Houses A–C achieved reductions of approximately 23% in global warming potential, 30% in abiotic depletion potential, and 20% in acidification potential while also lowering material costs by 3%–5%. This finding represents the initial step in exploring the reduction of new materials and reuse of recovered debris to decrease the EI of post-disaster housing.</div></div>","PeriodicalId":100245,"journal":{"name":"Circular Economy","volume":"4 2","pages":"Article 100141"},"PeriodicalIF":0.0,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-14DOI: 10.1016/j.cec.2025.100140
Anupam Khajuria , Prabhat Verma , Atienza Vella , Daniela Zanini-Freitag , Hao Xin , Indu K. Murthy , Jatinder K. Arora , Kamani Sylva , Lakshmi Menon , Sushma Pardeshi , Ulrich Kral , Xiao Liu
The integration of sustainable consumption, education, and circular economy principles is essential for effective waste management and achieving the United Nations sustainable development goals (UN SDGs). This research approach, including applied project conclusions, examines the role of education in promoting sustainable consumption and circular economy practices, highlights key aspects of circular economy solutions and addresses the challenges of waste management in India, China, and the Philippines. This paper draws on sessions from the 18th and 19th International Conference on Waste Management and Technology, which focused on expanding waste management services and integrating quality education for sustainable practices. The findings underscore the importance of robust waste management policies, public awareness, and innovative recycling technologies to achieve sustainable consumption and production (SCP). Furthermore, the paper emphasizes the need for collaboration among policymakers, educational institutions, and industry stakeholders to foster a culture of sustainability and circularity. By leveraging education to drive systemic changes in consumption patterns and waste management, this study contributes to a deeper understanding of how these elements collectively support the achievement of the UN SDGs, particularly SDG 12 (responsible consumption and production) and SDG 4 (quality education).
{"title":"The SDG accelerator: Circular economy solutions through efficient sustainable consumption","authors":"Anupam Khajuria , Prabhat Verma , Atienza Vella , Daniela Zanini-Freitag , Hao Xin , Indu K. Murthy , Jatinder K. Arora , Kamani Sylva , Lakshmi Menon , Sushma Pardeshi , Ulrich Kral , Xiao Liu","doi":"10.1016/j.cec.2025.100140","DOIUrl":"10.1016/j.cec.2025.100140","url":null,"abstract":"<div><div>The integration of sustainable consumption, education, and circular economy principles is essential for effective waste management and achieving the United Nations sustainable development goals (UN SDGs). This research approach, including applied project conclusions, examines the role of education in promoting sustainable consumption and circular economy practices, highlights key aspects of circular economy solutions and addresses the challenges of waste management in India, China, and the Philippines. This paper draws on sessions from the 18th and 19th International Conference on Waste Management and Technology, which focused on expanding waste management services and integrating quality education for sustainable practices. The findings underscore the importance of robust waste management policies, public awareness, and innovative recycling technologies to achieve sustainable consumption and production (SCP). Furthermore, the paper emphasizes the need for collaboration among policymakers, educational institutions, and industry stakeholders to foster a culture of sustainability and circularity. By leveraging education to drive systemic changes in consumption patterns and waste management, this study contributes to a deeper understanding of how these elements collectively support the achievement of the UN SDGs, particularly SDG 12 (responsible consumption and production) and SDG 4 (quality education).</div></div>","PeriodicalId":100245,"journal":{"name":"Circular Economy","volume":"4 2","pages":"Article 100140"},"PeriodicalIF":0.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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