Environmental impacts of plastic materials flow minimisation using data-driven pinch method

Varbanov, P.S., Chin, H.H., Jia, X., Sher, F. ORCID: 0000-0003-2890-5912 and Klemeš, J.J., 2021. Environmental impacts of plastic materials flow minimisation using data-driven pinch method. Chemical Engineering Transactions, 88, pp. 967-972. ISSN 1974-9791

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Plastics recycling, as a subclass of material recovery and recycling, features extensive and intensive properties. The intensive properties can be used to define a recyclability criterion and to classify the plastic materials for a symbiotic system (industrial, municipal and commercial) into recyclability categories, where the materials with higher recyclability can be either recycled/reused within the same category or cascaded and made available to categories with lower recyclability. The potential surplus waste materials of lowest-grade recyclability would be destined for waste treatment and disposal, while the potential deficit of materials in the highest-grade recyclability category would have to be fulfilled by supplying fresh plastic material produced from primary raw materials. The current contribution takes this problem formulation as a basis to optimise the plastics recycling of industrial symbiotic systems. It defines a Plastic Material Cascade Diagram and an associated set of Supply-Demand Composite Curves, identifying the recycling bottleneck – a Pinch Point limiting the rate of recycling and determining the most efficient material recycling network design. A case study is formulated to illustrate the usefulness of the new concept in reducing the consumption of raw materials and final waste.

Item Type: Journal article
Publication Title: Chemical Engineering Transactions
Creators: Varbanov, P.S., Chin, H.H., Jia, X., Sher, F. and Klemeš, J.J.
Publisher: Associazione Italiana di Ingegneria Chimica
Date: 15 November 2021
Volume: 88
ISSN: 1974-9791
Rights: Open Access. Copyright © 2021, AIDIC Servizi S.r.l.
Divisions: Schools > School of Science and Technology
Record created by: Linda Sullivan
Date Added: 25 Jul 2022 10:57
Last Modified: 25 Jul 2022 10:57
URI: https://irep.ntu.ac.uk/id/eprint/46698

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