Resources, conservation & recycling advances最新文献_第10页

The influence of meat consumption on greenhouse gas emissions in Argentina 阿根廷肉类消费对温室气体排放的影响

Resources, conservation & recycling advances Pub Date : 2023-09-26 DOI: 10.1016/j.rcradv.2023.200183

Asif Raihan

引用次数: 4

Gold recovery from synthetic mine tailings leachate using chelating ion exchange resins with thiosulfate-thiourea lixiviant 硫代硫酸盐-硫脲溶出剂螯合离子交换树脂回收合成尾矿渗滤液中的金

Resources, conservation & recycling advances Pub Date : 2023-09-21 DOI: 10.1016/j.rcradv.2023.200182

Victoria R. Shields , Thomas J Robshaw , Christopher P. Porter , James T.M. Amphlett , Alan Hides , Richard Bruce , Joan Cordiner , Mark D. Ogden

{"title":"Gold recovery from synthetic mine tailings leachate using chelating ion exchange resins with thiosulfate-thiourea lixiviant","authors":"Victoria R. Shields , Thomas J Robshaw , Christopher P. Porter , James T.M. Amphlett , Alan Hides , Richard Bruce , Joan Cordiner , Mark D. Ogden","doi":"10.1016/j.rcradv.2023.200182","DOIUrl":"https://doi.org/10.1016/j.rcradv.2023.200182","url":null,"abstract":"<div><p>Recovery of gold from mining tailings is important economically and environmentally in the mining industry. With a limited amount of mineable gold remaining, the process of recovering gold from mine tailings needs development. This paper will specifically investigate the recovery of gold using ion-exchange resins in a thiosulfate-thiourea lixiviant solution. A range of resins of different functionalities: Purolite® A200 (Type II quaternary ammonium), Lewatit® MonoPlus TP 214 and Puromet® MTS9140 (thiourea), Dowex™ M-4195 (bis-picolylamine) and Lewatit® VPOC 1026 (di(2-ethylhexyl)phosphate- D2EHPA) were assessed for their gold uptake capabilities via dynamic column experiments. A mixed-metal solution was used to accurately simulate the spent lixiviant from thiosulfate/thiourea leaching of mine tailings. All resins showed selectivity towards gold over the numerous other metals in solution, which was believed to be due to the stability of aqueous gold thiourea complexes. Puromet® MTS9140 had the highest gold capacity, with a calculated uptake capacity of 41.6 mg/L. Modified-Dose Response (MDR), Bohart-Adams and Yoon-Nelson models were used to describe the data; the MDR model being the most successful.</p></div>","PeriodicalId":74689,"journal":{"name":"Resources, conservation & recycling advances","volume":"19 ","pages":"Article 200182"},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49758207","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}

引用次数: 0

Improvements in charcoal production and the environmental implications: Potential for the invasive Prosopis juliflora in Kenya 木炭生产的改善及其对环境的影响：入侵肯尼亚的胡利花Prosopis juliflora的潜力

Resources, conservation & recycling advances Pub Date : 2023-09-01 DOI: 10.1016/j.rcradv.2023.200181

Mary Njenga , Moses Kirimi , Grace Koech , Erick Otieno Wanjira , Jonathan Muriuki , Phosiso Sola , Mieke Bourne , Ignatius Siko , Ruth Mendum

{"title":"Improvements in charcoal production and the environmental implications: Potential for the invasive Prosopis juliflora in Kenya","authors":"Mary Njenga , Moses Kirimi , Grace Koech , Erick Otieno Wanjira , Jonathan Muriuki , Phosiso Sola , Mieke Bourne , Ignatius Siko , Ruth Mendum","doi":"10.1016/j.rcradv.2023.200181","DOIUrl":"https://doi.org/10.1016/j.rcradv.2023.200181","url":null,"abstract":"<div><p>Charcoal is a common woodfuel in sub-Saharan Africa (SSA). Unsustainable wood sourcing and inefficient carbonization result into negative environmental impacts. This action research aimed at building the capacity for sustainable charcoal production including `improving the traditional earth mound kiln (TEK) that is used by 99% of charcoal producers in Kenya. Small stems and branches of the invasive <em>Prosopis juliflora</em> were used and produced quality charcoal with 28 kJ/g which will save trees. Improved earth mound kiln (IEK) increased charcoal yield by 49% per mass of sun dried wood fed into the kiln and reduced emissions of carbon monoxide, carbon dioxide and hydrocarbons by 40%, 49% and 44% respectively. Net charcoal yield by a mass of dry wood in TEK and IEK was 26.4% and 28.4% respectively. Communication and capacity development on sustainable charcoal benefit people and environment. Studies on sustainable charcoal and effects on dryland socio-ecological systems will be needed.</p></div>","PeriodicalId":74689,"journal":{"name":"Resources, conservation & recycling advances","volume":"19 ","pages":"Article 200181"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49748368","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}

引用次数: 1

Strategies for reducing construction waste using lean principles 运用精益原则减少建筑废物的策略

Resources, conservation & recycling advances Pub Date : 2023-08-29 DOI: 10.1016/j.rcradv.2023.200180

Musab Jamal Maraqa , Rafael Sacks , Sabrina Spatari

引用次数: 0

Recycling of tobacco waste: Development of reconstituted tobacco sheet with suitable strength and low-toxicity 烟草废弃物的回收利用:开发强度适宜、低毒的再生烟草片

Resources, conservation & recycling advances Pub Date : 2023-08-29 DOI: 10.1016/j.rcradv.2023.200179

Yu Li , Liying Wan , Meiling Yan , Xiangbing Tang , Song Gao , Yizhen Chen

{"title":"Recycling of tobacco waste: Development of reconstituted tobacco sheet with suitable strength and low-toxicity","authors":"Yu Li , Liying Wan , Meiling Yan , Xiangbing Tang , Song Gao , Yizhen Chen","doi":"10.1016/j.rcradv.2023.200179","DOIUrl":"https://doi.org/10.1016/j.rcradv.2023.200179","url":null,"abstract":"<div><p>Tobacco industry produces a large amount of tobacco waste every year, and the disposal of tobacco waste become a puzzling problem. Recycling of tobacco waste to reconstituted tobacco sheet (RTS) with suitable strength and low-toxicity was prepared in this paper. RTS with 1wt% compound adhesive that content sodium carboxymethyl cellulose and guar gum has a tensile strength (0.548 kN/m) which meet the requirements of industrial production. Strength enhancement was attributed to the synergistic effect of hydrogen bonding and physical cross-linking network through FTIR and SEM characterization. GC–MS was used to analyze the pyrolysis of RTS. The nicotine release of RTS was lower than commercial cigarettes, which significantly reduces the harmful substance. This work has been preliminarily applied to the industrial production. The production process of RTS is simple, with low water consumption and reuse of tobacco waste. Conforming to the concept of environmental protection, energy conservation, and tobacco resource recycling.</p></div>","PeriodicalId":74689,"journal":{"name":"Resources, conservation & recycling advances","volume":"19 ","pages":"Article 200179"},"PeriodicalIF":0.0,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49748366","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}

引用次数: 2

What a waste – A norm-critical design study on how waste is understood and managed 多么浪费-一个关于如何理解和管理浪费的规范关键设计研究

Resources, conservation & recycling advances Pub Date : 2023-08-25 DOI: 10.1016/j.rcradv.2023.200178

Anna-Sara Fagerholm , Henrik Haller , Anders Warell , Per-Olof Hedvall

引用次数: 0

Life cycle environmental impact assessment of cotton recycling and the benefits of a Take-Back system 棉花回收的生命周期环境影响评估和回收系统的效益

Resources, conservation & recycling advances Pub Date : 2023-08-23 DOI: 10.1016/j.rcradv.2023.200177

Shimul Roy , Ying Yi Jodie Chu , Shauhrat S. Chopra

{"title":"Life cycle environmental impact assessment of cotton recycling and the benefits of a Take-Back system","authors":"Shimul Roy , Ying Yi Jodie Chu , Shauhrat S. Chopra","doi":"10.1016/j.rcradv.2023.200177","DOIUrl":"https://doi.org/10.1016/j.rcradv.2023.200177","url":null,"abstract":"<div><p>This study assessed the contribution of mechanically recycled cotton to reducing environmental impacts of fabric production by blending the recycled cotton with 100% virgin cotton of different types, including the U.S., BCI-Brazilian, Global average, and China. GHG emissions, water footprint, air pollution, and land use were investigated for producing 1 kg fabric, considering a 'cradle-to-gate' approach. A 'Take-Back' system was modeled using the circular economy concept to illustrate potential impact reduction by avoiding virgin cotton. Impact reduction scenarios were created considering varying blending ratios (i.e., virgin/ recycled), focusing on 70% virgin and 30% recycled cotton (target). Results reveal that compared to the baseline impacts, the target scenario could reduce environmental impacts by 2.2–8.6% (GHG emissions), 0.6–24.5% (water footprint), 1.4–11.6% (air pollution), and 3.1–25.2% (land use). In summary, recycled cotton could partially substitute 100% virgin cotton for fabric production. Besides, implementing and scaling up the 'Take-Back' system could reduce environmental impacts and contribute to environmental sustainability.</p></div>","PeriodicalId":74689,"journal":{"name":"Resources, conservation & recycling advances","volume":"19 ","pages":"Article 200177"},"PeriodicalIF":0.0,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49748402","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}

引用次数: 0

Application of allocation methods in open-loop recycling systems: The carbon footprint of injection molded products based on ABS, PA66GF30, PC and POM 分配方法在开环回收系统中的应用：基于ABS、PA66GF30、PC和POM的注塑制品的碳足迹

Resources, conservation & recycling advances Pub Date : 2023-08-02 DOI: 10.1016/j.rcradv.2023.200176

Jan Tinz , Tim de Ancos , Fabian Völker , Holger Rohn

{"title":"Application of allocation methods in open-loop recycling systems: The carbon footprint of injection molded products based on ABS, PA66GF30, PC and POM","authors":"Jan Tinz , Tim de Ancos , Fabian Völker , Holger Rohn","doi":"10.1016/j.rcradv.2023.200176","DOIUrl":"https://doi.org/10.1016/j.rcradv.2023.200176","url":null,"abstract":"<div><p>The consumption of recyclates in open-loop recycling systems raises the question in <span>Life Cycle Assessments</span><svg><path></path></svg> of how environmental impacts caused by raw materials and recycling can be allocated to the corresponding products. To solve the multifunctional issue of material flows, this study applies the 50:50 method as well as the cut-off and end-of-life approach using the <span>Circular Footprint Formula</span><svg><path></path></svg> across a cascade of three product life cycles. This analysis is based on injection molded products made of virgin and secondary materials, which consist of ABS, PA66GF30, PC and POM from post-industrial waste. The loss of quality due to production and mechanical recycling processes is reflected in the decrease of tensile strength. By quantifying the impact of allocation, this paper highlights the effects on the Product Carbon Footprint according to ISO 14,067 to show that a 50:50 as well as a cut-off allocation is suitable for the assessment of technical plastics.</p></div>","PeriodicalId":74689,"journal":{"name":"Resources, conservation & recycling advances","volume":"19 ","pages":"Article 200176"},"PeriodicalIF":0.0,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49764904","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}

引用次数: 0

International CO2 capture and storage chains offer unique opportunities and challenges for life-cycle scrutiny 国际二氧化碳捕获和储存链为生命周期审查提供了独特的机遇和挑战

Resources, conservation & recycling advances Pub Date : 2023-07-27 DOI: 10.1016/j.rcradv.2023.200174

Udayan Singh , Vikram Vishal

引用次数: 0

Assessment of Sargassum spp. management strategies in southeast Florida 佛罗里达州东南部马尾藻管理策略评价

Resources, conservation & recycling advances Pub Date : 2023-07-25 DOI: 10.1016/j.rcradv.2023.200175

Afeefa A. Abdool-Ghany , Trent Blare , Helena M. Solo-Gabriele

{"title":"Assessment of Sargassum spp. management strategies in southeast Florida","authors":"Afeefa A. Abdool-Ghany , Trent Blare , Helena M. Solo-Gabriele","doi":"10.1016/j.rcradv.2023.200175","DOIUrl":"https://doi.org/10.1016/j.rcradv.2023.200175","url":null,"abstract":"<div><p>This study evaluated the economic viability of <em>Sargassum</em> management strategies in southeast Florida. Semi-structured interviews were conducted with key informants, beach managers and potential users. To compare the strategies, a cost and market analysis was conducted to assess the value of <em>Sargassum</em> compost relative to other compost products available in the market. The findings indicate that composting <em>Sargassum</em> is an economically viable option and suggests the potential for recouping some of the costs associated with beach cleaning through the sale of compost. Furthermore, the utilization of <em>Sargassum</em> compost could offer a cost-effective alternative as a soil amendment, especially in the face of rising fertilizer costs. However, it is crucial to address concerns regarding compost quality due to contaminants such as plastics and arsenic before implementing a composting operation. This aspect necessitates thorough investigation and remediation to ensure that the resulting compost meets quality standards and is free from potentially harmful contaminants.</p></div>","PeriodicalId":74689,"journal":{"name":"Resources, conservation & recycling advances","volume":"19 ","pages":"Article 200175"},"PeriodicalIF":0.0,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49764902","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}

引用次数: 1