scholarly journals Mixed or Contaminated Waste Plastic Recycling through Microwave - Assisted Pyrolysis

2021 ◽  
Author(s):  
Piero Frediani ◽  
Marco Frediani
Keyword(s):  
Single Type ◽  
Chemical Recycling ◽  
Thermoplastic Polymer ◽  
Waste Plastic ◽  
Plastic Recycling ◽  
Microwave Assisted ◽  
Thermochemical Process ◽  
Waste Plastic Recycling ◽  
Contaminated Waste ◽  
Waste Polypropylene

A single type of thermoplastic polymer is easily recycled through a mechanical process, but this way can’t be followed in the presence of mixed or contaminated plastic. In this case, one of the main followed solutions is a thermochemical process and among them, microwave-assisted pyrolysis is one of the emerging technologies. This chapter offers an update of the microwave-assisted pyrolysis of mixed or contaminated waste plastic as a very promising example of chemical recycling. Furthermore, some unpublished results in this field will be reported such as the pyrolysis of waste lead containing polyethylene coming from end cycle batteries or the pyrolysis of waste polypropylene from facemasks used for covid protection. Finally, some examples of pilot plants will be described and commented as well as several industrial cooperations.

scholarly journals Domestic and International Material Flow of Waste PET Bottles around Japan and Waste Plastic Recycling in China

2011 ◽  
Vol 22 (2) ◽  
pp. 125-139
Author(s):  
Atsushi Terazono ◽  
Hirokazu Hayashi ◽  
Aya Yoshida ◽  
Jun Nakatani ◽  
Yuichi Moriguchi
Keyword(s):  
Material Flow ◽  
Waste Plastic ◽  
Plastic Recycling ◽  
Pet Bottles ◽  
Waste Plastic Recycling

Rapid classification of plastics by laser-induced breakdown spectroscopy (LIBS) coupled with partial least squares discrimination analysis based on variable importance (VI-PLS-DA)

2019 ◽  
Vol 11 (9) ◽  
pp. 1174-1179 ◽  
Author(s):  
Ke Liu ◽  
Di Tian ◽  
Hongxia Wang ◽  
Guang Yang
Keyword(s):  
Process Control ◽  
Least Squares ◽  
Laser Induced Breakdown Spectroscopy ◽  
Discrimination Analysis ◽  
Waste Plastic ◽  
Breakdown Spectroscopy ◽  
Plastic Recycling ◽  
Laser Induced Breakdown ◽  
Waste Plastic Recycling

Combination of LIBS and VI-PLS-DA is a promising approach to achieve the online analysis and process control of waste plastic recycling.

The waste-plastic recycling system with coke oven at the iron-manufacture process

2001 ◽  
Vol 2001.11 (0) ◽  
pp. 172-174
Author(s):  
Kaoru SOYAMA ◽  
Takeshi YAMAGUCHI ◽  
Tadayuki HIGASHI ◽  
Hirotoshi KONDO
Keyword(s):  
Coke Oven ◽  
Waste Plastic ◽  
Recycling System ◽  
Plastic Recycling ◽  
Manufacture Process ◽  
Waste Plastic Recycling

scholarly journals Design of Pyrolysis Reactor for Waste Plastic Recycling

2020 ◽  
Vol 5 (5) ◽  
pp. 92
Author(s):  
Wondwosen Bekele ◽  
Wassihun Amedie ◽  
Zelalem Salehudres
Keyword(s):  
Waste Plastic ◽  
Plastic Recycling ◽  
Waste Plastic Recycling ◽  
Pyrolysis Reactor

Chemical upcycling of polymers

2021 ◽  
Vol 379 (2209) ◽  
Author(s):  
Bernhard M. Stadler ◽  
Johannes G. de Vries
Keyword(s):  
Closed Loop ◽  
Plastic Waste ◽  
Advanced Materials ◽  
Production Volume ◽  
Theme Issue ◽  
Separation Processes ◽  
Waste Plastic ◽  
Fast Growing ◽  
Plastic Recycling ◽  
Waste Plastic Recycling

As the production volume of polymers increases, so does the amount of plastic waste. Plastic recycling is one of the concepts to address in this issue. Unfortunately, only a small fraction of plastic waste is recycled. Even with the development of polymers for closed loop recycling that can be in theory reprocessed infinitely the inherent dilemma is that because of collection, cleaning and separation processes the obtained materials simply are not cost competitive with virgin materials. Chemical upcycling, the conversion of polymers to higher valuable products, either polymeric or monomeric, could mitigate this issue. In the following article, we highlight recent examples in this young but fast-growing field. This article is part of the theme issue 'Bio-derived and bioinspired sustainable advanced materials for emerging technologies (part 2)'.

Recovery and Utilization of Waste Plastic Mulching Film in China Rural Areas – Tanking Awat County, Xinjiang as Example

2014 ◽  
Vol 971-973 ◽  
pp. 2213-2216 ◽  
Author(s):  
Yan Xia Liu
Keyword(s):  
Rural Areas ◽  
Ecological Civilization ◽  
Mechanical Recycling ◽  
Waste Plastic ◽  
Plastic Recycling ◽  
Local Soil ◽  
Gradual Process ◽  
Plastic Mulching ◽  
Waste Plastic Recycling ◽  
Mulching Film

The overuse of plastic mulching film in Awat county caused a gradual process of deterioration of the local soil environment, greatly polluted the environmental sanitation in rural areas and hindered the improvement of agricultural machinery's operation quality. After analyzing the related data of plastic mulching film use, and the status of its' recovery and utilization in Awat county, presented the optimizing countermeasures from the following aspects: strengthening the propaganda of the harmfulness of “white pollution”, promoting local peasants' ecological civilization consciousness; developing waste plastic recycling enterprises, broadening the recycling channels; formulating preferential policies to increase the support for waste plastic recycling; controlling and reducing the plastic mulching film residuals from farming techniques; intensifying residual plastic recycling by combining manual and mechanical recycling.

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