Special Issue "Advances in the Recycling and Processing of Plastic Waste"

A special issue of Recycling (ISSN 2313-4321).

Deadline for manuscript submissions: 31 January 2022.

Special Issue Editors

Prof. Dr. Michele John
E-Mail Website
Guest Editor
Sustainable Engineering Group, Curtin University, Perth, WA 6845, Australia
Interests: resource recovery, sustainable materials; green manufacturing; transformation of waste collection, mining and agricultural waste value adding
Special Issues and Collections in MDPI journals
Dr. Wan-Ting (Grace) Chen
E-Mail Website
Guest Editor
Department of Plastics Engineering, UMass Lowell Francis College of Engineering, MA 01854, USA
Interests: chemical recycling; microplastics; biodegradable materials; ocean plastic waste; hydrothermal processing
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

More than eight billion tons of plastic waste has accumulated worldwide over the past 50 years. The majority (80%) of the waste goes directly into landfills and 3% ends up in the oceans. At the current rate, we are heading towards more plastic than fish in the ocean by 2050. Plastics are persistent in the environment and degrade slowly (over a century), releasing fragments, microplastics, and toxic chemicals into our environment.

The overall goal of this Special Issue is to shed light on the area of plastic waste recycling. Topics of interest include (but are not limited to) advanced mechanical recycling, chemical recycling, biodegradable plastic material development, microplastic characterization/mitigation, characterization advancement for plastic waste, and recycling policy analysis.

Prof. Dr. Michele John
Dr. Wan-Ting (Grace) Chen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Recycling is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Mechanical recycling
  • Chemical recycling
  • Plastic waste
  • Microplastics
  • Plastic additives

Published Papers (2 papers)

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Research

Article
Effect of Hard Plastic Waste on the Quality of Recycled Polypropylene Blends
Recycling 2021, 6(3), 58; https://doi.org/10.3390/recycling6030058 - 01 Sep 2021
Viewed by 2035
Abstract
The recycling of plastic waste is undergoing fast growth due to environmental, health and economic issues, and several blends of post-consumer and post-industrial polymeric materials have been characterized in recent years. However, most of these researches have focused on plastic containers and packaging, [...] Read more.
The recycling of plastic waste is undergoing fast growth due to environmental, health and economic issues, and several blends of post-consumer and post-industrial polymeric materials have been characterized in recent years. However, most of these researches have focused on plastic containers and packaging, neglecting hard plastic waste. This study provides the first experimental characterization of different blends of hard plastic waste and virgin polypropylene in terms of melt index, differential scan calorimetry (DSC), thermogravimetric analysis (TGA), mechanical properties (tensile, impact and Shore hardness) and Vicat softening test. Compared to blends based on packaging plastic waste, significant differences were observed in terms of melt flow index (about 10 points higher for hard plastic waste). Mechanical properties, in particular yield strain, were instead quite similar (between 5 and 9%), despite a higher standard deviation being observed, up to 10%, probably due to incomplete homogenization. Results demonstrate that these worse performances could be mainly attributed to the presence of different additives, as well as to the presence of impurities or traces of other polymers, other than incomplete homogenization. On the other hand, acceptable results were obtained for selected blends; the optimal blending ratio was identified as 78% post-consumer waste and 22% post-industrial waste, meeting the requirement for injection molding and thermoforming. Full article
(This article belongs to the Special Issue Advances in the Recycling and Processing of Plastic Waste)
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Article
Incentives for Plastic Recycling: How to Engage Citizens in Active Collection. Empirical Evidence from Spain
Recycling 2021, 6(2), 29; https://doi.org/10.3390/recycling6020029 - 26 Apr 2021
Cited by 1 | Viewed by 943
Abstract
The recycling target for plastics is expected to increase Europe-wide from 22.5% to 55% by 2025, hence the relevance of incentive schemes and the need to reach conclusions about how to encourage families to recycle more. Following this objective, a pilot project was [...] Read more.
The recycling target for plastics is expected to increase Europe-wide from 22.5% to 55% by 2025, hence the relevance of incentive schemes and the need to reach conclusions about how to encourage families to recycle more. Following this objective, a pilot project was implemented and a virtual reward token called RECICLOS created to encourage recycling among families, using incentives and awards to improve recycling behaviour and a webapp prototype to register the recycled plastic. By the end of the 6-week pilot project, 1053 families were registered on the scheme, representing 10% of the targeted population in the pilot area of the county of Pla de l’Estany, Catalonia, Spain. The novelties were the introduction of a token, the gamification of incentives through raffles and lotteries, webapp-based direct communication with citizens, and feedback after collecting and registering the recycled material. The multidimensional aspects of recycling activities, their strong relation with human behavioural patterns, and the high demand for communication and interaction mean that mobile technologies find significant application in this field. The results show that people can be influenced and their recycling habits changed by means of varied, effective, and innovative incentive schemes. Full article
(This article belongs to the Special Issue Advances in the Recycling and Processing of Plastic Waste)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Properties and re-useability of light fraction plastics mechanically separated from WEEE
Authors: Ossi Martikka
Affiliation: LUT University
Abstract: Only in the EU, electrical and electronic equipment market reached 8.9 million tonnes in 2017, with increase of 6.5% from the previous year. Almost 3.8 million tonnes of WEEE was collected in the European union during 2017. The challenge with the reclaimed plastics, that it is likely they contain currently restricted substances as persistent organic pollutants. In this paper, the feasibility and possibility of recycling and sustainably reusing the light fraction separated from WEEE plastics utilizing hydrocyclone separation, is investigated with regard to regulatory norms such as 2011/65/EU and 2019/1021 (EU).

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