Current Topics in Recycling [Working Title]最新文献

Current Topics in Plastic Recycling 塑料回收的最新话题

Current Topics in Recycling [Working Title] Pub Date : 2021-12-29 DOI: 10.5772/intechopen.101575

Maria Anna Charitopoulou, E. Alexopoulou, P. Alexiou, Dimitris S. Achilias

{"title":"Current Topics in Plastic Recycling","authors":"Maria Anna Charitopoulou, E. Alexopoulou, P. Alexiou, Dimitris S. Achilias","doi":"10.5772/intechopen.101575","DOIUrl":"https://doi.org/10.5772/intechopen.101575","url":null,"abstract":"This chapter presents an overview of current trends in plastic recycling and focuses on specific topics of interest. Firstly, there are presented all methods used for plastic recycling, along with the advantages and disadvantages of each method. Extra attention is paid to chemical recycling and especially, pyrolysis (thermal and catalytic), which is an environmentally friendly method that results in the formation of value-added products. Emphasis is given on three case studies where there are difficulties as regards the recycling of the plastic part: polymeric blends, since the existence of mixed plastic wastes may be challenging for their recycling; plastics originating in multilayer packaging, since the multilayer packaging consists of various materials, including plastics, paper, and metals that may be an obstacle for the recycling of the plastic part; and brominated flame-retarded plastics from waste electric and electronic equipment (WEEE), since in this case safe handling is required in order to avoid environmental contamination and a pretreatment step before recycling may be of paramount importance. These three case studies along with the mentioned difficulties and suggestions in order to overcome them are presented here, with the aim of offering insights for future studies on the management of plastic materials.","PeriodicalId":107142,"journal":{"name":"Current Topics in Recycling [Working Title]","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130761353","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

Compost, Social Sustainability, and Circular Economy in Guatemala 危地马拉的堆肥、社会可持续性和循环经济

Current Topics in Recycling [Working Title] Pub Date : 2021-11-09 DOI: 10.5772/intechopen.100280

Peter A. Kumble

引用次数: 0

Urban Mining of e-Waste and the Role of Consumers 电子垃圾的城市挖掘和消费者的作用

Current Topics in Recycling [Working Title] Pub Date : 2021-10-19 DOI: 10.5772/intechopen.100363

Dimitris Georgantzis Garcia, Sven Kevin van Langen

{"title":"Urban Mining of e-Waste and the Role of Consumers","authors":"Dimitris Georgantzis Garcia, Sven Kevin van Langen","doi":"10.5772/intechopen.100363","DOIUrl":"https://doi.org/10.5772/intechopen.100363","url":null,"abstract":"This chapter adds to the body of literature on the Circular Economy (CE), urban mining, and their intersection with consumer behaviour, by first providing a review of existing and emergent EU regulations aimed towards enhancing the collection rate of household WEEE. The fast growth of the EEE waste stream and its potential for Urban Mining as well as the inability of WEEE collection to keep up with the growth of the EEE industry is showcased with statistical data. The final section critically analyses the literature the intersection between consumer behaviour and closed-loop supply chains for EEE, identified through a systematic keyword search to ensure replicability. The findings point at a lack of theoretical, methodological and product-case heterogeneity among the identified sources, with most of them employing the Theory of Planned Behaviour and survey methods and focusing on mobile phones or general WEEE. While the literature suggests important behavioural differences across EEE categories, this was not representatively explored. The final section contributes to filling this gap by developing a taxonomy of EEE categories based on characteristics that may predispose consumer behaviour. The identified dimensions are: size, involvement, long-term reliability expectations, value type, internet access, multifunctionality, the quality of being outdated and social meaning.","PeriodicalId":107142,"journal":{"name":"Current Topics in Recycling [Working Title]","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115151436","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

Retreatment of Polymer Wastes by Disintegrator Milling 聚合物废弃物的粉碎再处理

Current Topics in Recycling [Working Title] Pub Date : 2021-09-21 DOI: 10.5772/intechopen.99715

P. Kulu, D. Goljandin

引用次数: 1

Effect of Environmental Aging on Tensile Properties of Post-Consumer Recycled (PCR) Polycarbonates 环境老化对消费后再生聚碳酸酯拉伸性能的影响

Current Topics in Recycling [Working Title] Pub Date : 2021-09-08 DOI: 10.5772/intechopen.99528

R. Islam, Syed Zameer, Jacki Laiz, David Z. Chen, Anthony Yu, A. Chakravartula

{"title":"Effect of Environmental Aging on Tensile Properties of Post-Consumer Recycled (PCR) Polycarbonates","authors":"R. Islam, Syed Zameer, Jacki Laiz, David Z. Chen, Anthony Yu, A. Chakravartula","doi":"10.5772/intechopen.99528","DOIUrl":"https://doi.org/10.5772/intechopen.99528","url":null,"abstract":"In this chapter, tensile properties of different grades of post-consumer recycled (PCR) polycarbonate (PC) plastics have been compared with conventional or virgin PC before and after different aging conditions. 50 and 75% recycled PCs showed comparable yield strength (∼57 MPa), maximum tensile strength (∼70 MPa) and maximum strain (∼190–200%) before aging, when compared to virgin PC of same melt flow rate (MFR of ∼10 g/10 min). From the fractography analysis (optical and scanning electron microscopy) of the both virgin and 50% recycled PC, it is evident that the fracture morphologies are very similar and they are indicative of ductile failure. It is observed that with the presence of temperature and humidity (60°C 90% RH) aging, tensile strength starts to drop over time but most importantly both 50% and 75% PCR grades showed similar aging behavior compared to virgin PC (10–13% strength degradation after 500 hours of aging). Reliability modelling showed comparable B10, Weibull Alpha and Weibull Beta values between Virgin PC and PCR grades after different aging conditions. Fractography analysis of fresh and aged 75% PCR also showed ductile features.","PeriodicalId":107142,"journal":{"name":"Current Topics in Recycling [Working Title]","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124831795","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

Recent Advances in Pre-Treatment of Plastic Packaging Waste 塑料包装废弃物预处理研究进展

Current Topics in Recycling [Working Title] Pub Date : 2021-08-13 DOI: 10.5772/intechopen.99385

Rita Carvalho, Martijn Roosen, Sibel Ügdüler, K. V. Geem, K. Ragaert, D. Achilias, S. Meester

引用次数: 5

Phytomass-Derived Multifunctional Activated Carbon as a “Wonder-Material”: A Paradigm Shift of Filth-to-Wealth 植物质衍生的多功能活性炭作为一种“神奇材料”:从污秽到财富的范式转变

Current Topics in Recycling [Working Title] Pub Date : 2021-08-13 DOI: 10.5772/intechopen.99448

P. Kalyani, T. R. Banuprabha, Chinnamayan Sudharsana, N. Anvarsha

{"title":"Phytomass-Derived Multifunctional Activated Carbon as a “Wonder-Material”: A Paradigm Shift of Filth-to-Wealth","authors":"P. Kalyani, T. R. Banuprabha, Chinnamayan Sudharsana, N. Anvarsha","doi":"10.5772/intechopen.99448","DOIUrl":"https://doi.org/10.5772/intechopen.99448","url":null,"abstract":"Activated carbon (AC) is a wonder-material that finds multifarious applications such as catalytic supports, removal of pollutants, electrodes in energy gadgets, gas storage etc. Surface area, chemical constituents and pore structures are a few traits required in the ACs which largely depend on the source of the precursors and processing methodologies adopted. In this context, the idea of recycling phytomass for producing ACs has attracted researchers seeing that the inexpensive and renewable nature of the phytomass can reduce the overall cost of producing ACs with diversified features and that it does not add CO2 to the atmosphere leading to global warming (plants release only the same amount of CO2 as they consumed while growing). Further, phytomass after their life possess no value but their conversion into ACs would be an economically profitable option leading to inexpensive ACs. As a consequent of these advantages this chapter has been planned and designed to provide certain interesting multifunctional aspects of low-cost phytomass derived ACs. The chapter is expected to provide research insights oriented towards identification of unexplored phytomass or wastes which could lead to carbon with novel properties tunable to the applications. Filth-to-wealth or in other words, recycling of wastes provides a strategy categorized under circular-bioeconomy, which is the want of the hour.","PeriodicalId":107142,"journal":{"name":"Current Topics in Recycling [Working Title]","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115321016","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

Performance Analysis and Modeling of Microplastic Separation through Hydro Cyclones 水力旋流器分离微塑料的性能分析与建模

Current Topics in Recycling [Working Title] Pub Date : 2021-08-11 DOI: 10.5772/intechopen.99447

Fabio Borgia

引用次数: 1

An Evaluation of Recycled Polymeric Materials Usage in Denim with Lifecycle Assesment Methodology 用生命周期评价方法评价再生高分子材料在牛仔布中的应用

Current Topics in Recycling [Working Title] Pub Date : 2021-08-11 DOI: 10.5772/intechopen.99446

Sedef Uncu Akı, C. Candan, B. Nergis, Neslihan Sebla Önder

引用次数: 0

Industrial Re-Use of Composites 复合材料的工业再利用

Current Topics in Recycling [Working Title] Pub Date : 2021-08-09 DOI: 10.5772/intechopen.99452

Albert ten Busschen

{"title":"Industrial Re-Use of Composites","authors":"Albert ten Busschen","doi":"10.5772/intechopen.99452","DOIUrl":"https://doi.org/10.5772/intechopen.99452","url":null,"abstract":"The amount of obsolete composites is increasing on a global scale, for example yacht hulls from a growing leisure industry and large rotor blades from wind energy production. Until now it has not been possible to recycle or disassemble thermoset composites into their original constituent parts of fibre reinforcement and resins. Subsequently a new method of re-use has been developed. This method involves machining the obsolete composite product into strips or flakes for re-use as reinforcing elements which, when combined with fresh resin and fibre, enable the production of a brand new component. This, in effect, preserves and re-uses the mechanical properties of the original obsolete composite. This method has been proven in manufacturing retaining walls, also guide beams for canals, crane mats and bridge decking, all using the strips or flakes from end of life composite products. For use on an industrial scale, a positive business case is imperative. In order to prove the industrial technology, new products have to contain a sufficiently high percentage of re-used composites in combination with automated processing. This has been achieved with “push-pultrusion” which is in essence a further development of the long established pultrusion process.","PeriodicalId":107142,"journal":{"name":"Current Topics in Recycling [Working Title]","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116819549","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