Circular Economy最新文献_第10页

Improving aluminium resource efficiency in China: Based upon material flow analysis and entropy analysis 提高中国铝资源效率:基于物料流分析和熵分析

Circular Economy Pub Date : 2022-09-01 DOI: 10.1016/j.cec.2022.100005

Guimei Zhao , Yong Geng , Chao Tang , Han Hao , Raimund Bleischwitz , Xu Tian

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引用次数: 4

Accelerating circular economy solutions to achieve the 2030 agenda for sustainable development goals 加快循环经济解决方案，实现2030年可持续发展议程目标

Circular Economy Pub Date : 2022-09-01 DOI: 10.1016/j.cec.2022.100001

Anupam Khajuria , Vella A. Atienza , Suchana Chavanich , Wilts Henning , Ishrat Islam , Ulrich Kral , Meng Liu , Xiao Liu , Indu K. Murthy , Temitope D. Timothy Oyedotun , Prabhat Verma , Guochang Xu , Xianlai Zeng , Jinhui Li

{"title":"Accelerating circular economy solutions to achieve the 2030 agenda for sustainable development goals","authors":"Anupam Khajuria , Vella A. Atienza , Suchana Chavanich , Wilts Henning , Ishrat Islam , Ulrich Kral , Meng Liu , Xiao Liu , Indu K. Murthy , Temitope D. Timothy Oyedotun , Prabhat Verma , Guochang Xu , Xianlai Zeng , Jinhui Li","doi":"10.1016/j.cec.2022.100001","DOIUrl":"10.1016/j.cec.2022.100001","url":null,"abstract":"<div><p>Circular economy seems a vital enabler for sustainable use of natural resources which is also important for achieving the 2030 agenda for sustainable development goals. Therefore, a special session addressing issues of “sustainable solutions and remarkable practices in circular economy focusing materials downstream” was held at the 16th International Conference on Waste Management and Technology, where researchers and attendees worldwide were convened to share their experiences and visions. Presentations focusing on many key points such as new strategies, innovative technologies, management methods, and practical cases were discussed during the session. Accordingly, this article compiled all these distinctive presentations and gave insights into the pathway of circular economy towards the sustainable development goals. We summarized that the transition to circular economy can keep the value of resources and products at a high level and minimize waste production; the focus of governmental policies and plans with the involvement of public-private-partnership on 3Rs (reduce, reuse, and recycle) helps to improve the use of natural resources and take a step ahead to approach or achieve the sustainability.</p></div>","PeriodicalId":100245,"journal":{"name":"Circular Economy","volume":"1 1","pages":"Article 100001"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773167722000012/pdfft?md5=750807146b826a20861a1aae5767b8b3&pid=1-s2.0-S2773167722000012-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79950746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 40

Thermodynamic analysis of biomass and plastic feedstock circulation using pyrolysis technology 生物质与塑料原料热解循环热力学分析

Circular Economy Pub Date : 2022-09-01 DOI: 10.1016/j.cec.2022.100006

Sampad Kumar Das , Sadhan Kumar Ghosh

{"title":"Thermodynamic analysis of biomass and plastic feedstock circulation using pyrolysis technology","authors":"Sampad Kumar Das , Sadhan Kumar Ghosh","doi":"10.1016/j.cec.2022.100006","DOIUrl":"https://doi.org/10.1016/j.cec.2022.100006","url":null,"abstract":"<div><p>In this study, the yield of conversion process of plastic and biomass wastes has been investigated using the pyrolysis process. To study the pyrolysis process and its yield, a quadratic model has been adopted and the coefficients of the model have been identified from the theoretical and experimental work. The pyrolysis of biomass and plastics has been analyzed through the kinetic model. The model has predicted bio-oil, bio-gas, and bio-char yields. Through kinetic model analysis, thermodynamic parameters have been identified. The Arrhenius coefficient of reaction rate constant has been calculated from the activation energy and absolute reaction temperature. The enthalpy, Gibbs free energy, and entropy of reaction have also been calculated. The activation energy has been observed to vary from 144.9 to 158.5 kJ/mol. The Arrhenius coefficient of reaction rate constant has been identified as 0.000779 per minute. The enthalpy and Gibbs free energy have been observed to have values of 154.35 and 103.65 kJ/mol, respectively. The bio-oil yield has been observed to vary from 60% to 80% of the total yield. For bio-char production, the weight percentage of bio-char has been found as 2 to 3 percent of the total yield. Bio-gas has been found as 10%–25% of the total yield. Therefore, the addition of plastic for pyrolysis can make a positive contribution to the quality of syngas and bio-oil in terms of high heating value, efficiency, and energy output.</p></div>","PeriodicalId":100245,"journal":{"name":"Circular Economy","volume":"1 1","pages":"Article 100006"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773167722000061/pdfft?md5=79f0062aeba519a2b98c2170a4ca5953&pid=1-s2.0-S2773167722000061-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91609068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Reshaping global policies for circular economy 重塑全球循环经济政策

Circular Economy Pub Date : 2022-05-01 DOI: 10.1016/j.cec.2022.100003

Xianlai Zeng, O. Ogunseitan, S. Nakamura, S. Suh, Ulrich Kral, Jinhui Li, Yong Geng