Resources, Conservation and Recycling: X最新文献_第4页

Upcycling food waste digestate for energy and heavy metal remediation applications 将食物残渣升级为能源和重金属修复应用

Resources, Conservation and Recycling: X Pub Date : 2019-10-01 DOI: 10.1016/j.rcrx.2019.100015

Haili Chen, Ahmed I. Osman, Chirangano Mangwandi, David Rooney

{"title":"Upcycling food waste digestate for energy and heavy metal remediation applications","authors":"Haili Chen, Ahmed I. Osman, Chirangano Mangwandi, David Rooney","doi":"10.1016/j.rcrx.2019.100015","DOIUrl":"10.1016/j.rcrx.2019.100015","url":null,"abstract":"<div>Anaerobic digestate originating from food waste has been studied herein for two different purposes. Firstly, for combustion, co-granulation of the digestate and medium density fibreboard (MDF) dust with the addition of sodium silicate as the binder was used to produce the granular solid biofuel. It was found that increasing the content of the medium density fibreboard dust could increase the calorific value but had no significant effect on the strength of the final granules. Additionally, a significant reduction of the ash content was also observed. For heavy metal removal, granules made using the digestate and sodium silicate binder were carbonised to produce biochar which was characterised and applied as adsorbent materials. The biochar has a good removal capacity for both lead and cadmium, and the binder concentration had a positive correlation with the removal capacity of the resultant biochar. The maximum lead removal capacity (355.3mgg−1) of biochar made using 3wt.% sodium silicate binder, was six times more than the analogous commercial activated carbon. Langmuir model showed better fitting for adsorption data of Pb2+, while the Freundlich model showed better fitting of Cd2+. For both Pb2+ and Cd2+ kinetic data, the pseudo-second-order had a better correlation. Our approach helps aid and facilitate the concept of the circular economy by effectively up-cycling and valorising waste lignocellulosic biomass such as food waste digestate into value-added products.</div>","PeriodicalId":36714,"journal":{"name":"Resources, Conservation and Recycling: X","volume":"3 ","pages":"Article 100015"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rcrx.2019.100015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45557553","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: 38

A novel method to rapidly assess the suitability of water treatment residual and crushed concrete for the mitigation of point and nonpoint source nutrient pollution 一种快速评估水处理残余物和破碎混凝土对减轻点源和非点源营养物污染的适用性的新方法

Resources, Conservation and Recycling: X Pub Date : 2019-08-01 DOI: 10.1016/j.rcrx.2019.100010

O. Callery, M.G. Healy

{"title":"A novel method to rapidly assess the suitability of water treatment residual and crushed concrete for the mitigation of point and nonpoint source nutrient pollution","authors":"O. Callery, M.G. Healy","doi":"10.1016/j.rcrx.2019.100010","DOIUrl":"10.1016/j.rcrx.2019.100010","url":null,"abstract":"<div>Freshwater ecosystems worldwide are at risk of becoming degraded as a result of excessive inputs of phosphorus (P) associated with terrestrial activities. This study describes a novel methodology to rapidly assess the potential of low-cost adsorbents which might be used to combat this issue. The ability of aluminum drinking water treatment residual (Al-WTR) and crushed concrete (CC) to remove P from dairy wastewater (DW) and forestry runoff (wastewaters representative of point and nonpoint P pollution sources, respectively) was assessed. In addition to predicting the longevity of these media in large-scale filters, potential risks associated with their use were also examined. The results indicate that both CC and Al-WTR show promise for use in removing P from forestry runoff, however the raised pH of effluent from CC filters may pose an environmental concern. Al-WTR showed greater promise than CC for the treatment of DW due to its higher adsorption capacity at high concentrations. Small releases of aluminum (13.63-96.17 μg g−1) and copper (5.25-31.9 μg g−1) were observed from both media when treating forestry runoff, and Al-WTR also released a small amount of nickel (0.16 μg g−1). Approximately 50% of total metal loss occurred during the first 25% of total filter loading, indicating that pre-washing of the media would help prevent metal release. These results indicate that field-scale tests are warranted for the treatment of both wastewaters with Al-WTR; CC is likely to be unsuitable for either forestry runoff or DW due to its effects on pH and its short lifespan.</div>","PeriodicalId":36714,"journal":{"name":"Resources, Conservation and Recycling: X","volume":"2 ","pages":"Article 100010"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rcrx.2019.100010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47099767","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: 4

DIGITAL TECHNOLOGIES IN THE BUSINESS MODEL TRANSITION TOWARDS CIRCULAR ECONOMY 数字技术在商业模式向循环经济转型中的应用

Resources, Conservation and Recycling: X Pub Date : 2019-08-01 DOI: 10.1016/j.rcrx.2019.100009

引用次数: 1

WITHDRAWN: An operational framework for sustainability assessment including local to global impacts: Focus on waste management systems 撤回:可持续性评估的业务框架，包括地方到全球的影响:侧重于废物管理系统

Resources, Conservation and Recycling: X Pub Date : 2019-08-01 DOI: 10.1016/j.rcrx.2019.100005

Sue Taelman , David Sanjuan-Delmás , Davide Tonini , Jo Dewulf

引用次数: 12

Assessing barriers to reuse of electrical and electronic equipment, a UK perspective 评估电气和电子设备再利用的障碍，英国视角

Resources, Conservation and Recycling: X Pub Date : 2019-06-01 DOI: 10.1016/j.rcrx.2019.100004

Christine Cole , Alex Gnanapragasam , Tim Cooper , Jagdeep Singh

{"title":"Assessing barriers to reuse of electrical and electronic equipment, a UK perspective","authors":"Christine Cole , Alex Gnanapragasam , Tim Cooper , Jagdeep Singh","doi":"10.1016/j.rcrx.2019.100004","DOIUrl":"10.1016/j.rcrx.2019.100004","url":null,"abstract":"<div>This paper reports on research undertaken to identify generic and specific barriers to reuse of electrical and electronic equipment (EEE). Thirty semi-structured interviews were conducted with experts from across the value chain including product designers, manufacturers, users and waste managers as well policy makers and academics. The interviews sought to examine perceived and real barriers to reuse in the UK. Three inter-connected factors that limit opportunities and instances of reuse of electrical and electronic equipment were identified, highlighting that both systemic and consumer barriers to increasing levels of reuse exist. These are: producer reluctance, unsuitable collection infrastructure and cultural issues. Overall, the paper shows that low levels of reuse in the electrical and electronic sector are a result of complex and interlinked barriers. Understanding these connections offers the potential to improve the opportunities for reuse, by providing direction for policy makers to address barriers from a multi stakeholder perspective. Increasing instances of reuse is essential if the UK is to successfully move towards a resource efficient, circular economy.</div>","PeriodicalId":36714,"journal":{"name":"Resources, Conservation and Recycling: X","volume":"1 ","pages":"Article 100004"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rcrx.2019.100004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49463743","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: 18

Carbon dioxide mitigation co-benefit analysis of energy-related measures in the Air Pollution Prevention and Control Action Plan in the Jing-Jin-Ji region of China 京津冀地区大气污染防治行动计划中能源相关措施的二氧化碳减排协同效益分析

Resources, Conservation and Recycling: X Pub Date : 2019-06-01 DOI: 10.1016/j.rcrx.2019.100006

Zhenyu Lu , Lin Huang , Jun Liu , Ying Zhou , Mindong Chen , Jianlin Hu

{"title":"Carbon dioxide mitigation co-benefit analysis of energy-related measures in the Air Pollution Prevention and Control Action Plan in the Jing-Jin-Ji region of China","authors":"Zhenyu Lu , Lin Huang , Jun Liu , Ying Zhou , Mindong Chen , Jianlin Hu","doi":"10.1016/j.rcrx.2019.100006","DOIUrl":"10.1016/j.rcrx.2019.100006","url":null,"abstract":"<div>To improve air quality and protect public health, the State Council of China issued the National Air Pollution Prevention and Control Action Plan (‘the Action Plan’) in 2013. Specific measures were designed in the Action Plan to reduce emissions of atmospheric pollutants, with core contents in energy related measures. Implementing these measures would potentially have significant co-benefits on carbon dioxide (CO2) emissions. This study quantitatively analyzes the impacts of the different measures in the Action Plan on the emissions of major air pollutants of sulfur dioxide (SO2), nitrogen oxides (NOX), particulate matter (PM) and CO2 in the Jing-Jin-Ji (JJJ, i.e., Beijing-Tianjin-Hebei) region using the Greenhouse Gas and Air Pollution Interactions and Synergies model (GAINS)-China model. The results show that the Action Plan in JJJ would reduce 47.3 ± 0.8% of SO2, 32.5 ± 2.6% of NOx, 15.2 ± 0.2% of PM2.5, and 39.9 ± 5.3% CO2 emissions, compared to the emissions in 2012. PM2.5 emission reduction has the highest co-benefit for CO2 reduction in JJJ, and also in Tianjin and Hebei. In Beijing, NOx emission reduction has high co-benefit for CO2 reduction, when considering the relative degree of co-benefit. Among the different source sectors, industrial and residential sectors are identified to be the source sectors that contribute the most to the co-benefit of CO2 emission reduction in JJJ. The results suggest that implementing energy replacement in the industrial and residential sectors in JJJ can not only generate large amounts of air pollutants emission reduction, but also can lead to significant CO2 emission reduction.</div>","PeriodicalId":36714,"journal":{"name":"Resources, Conservation and Recycling: X","volume":"1 ","pages":"Article 100006"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.rcrx.2019.100006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47170737","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: 42

WITHDRAWN: The expansion of the built environment, waste generation and EU recycling targets on Samothraki, Greece: An island's dilemma 退出：希腊萨莫特拉基的建筑环境、废物产生和欧盟回收目标的扩大：一个岛屿的困境

Resources, Conservation and Recycling: X Pub Date : 2019-06-01 DOI: 10.1016/j.rcrx.2019.100008

Dominik Noll, Dominik Wiedenhofer, A. Miatto, S. Singh

引用次数: 0