PVC Dechlorination for Facilitating Plastic Chemical Recycling: A Systematic Literature Review of Technical Advances, Modeling and Assessment

Yuan Tian, Mengqi Han, Dungang Gu (), Zhujie Bi, Nannan Gu, Tingting Hu, Guanghui Li, Nan Zhang and Jiaqi Lu ()
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Yuan Tian: Innovation Centre for Environment and Resources, Shanghai University of Engineering Science, No. 333 Longteng Road, Songjiang District, Shanghai 201620, China
Mengqi Han: Innovation Centre for Environment and Resources, Shanghai University of Engineering Science, No. 333 Longteng Road, Songjiang District, Shanghai 201620, China
Dungang Gu: Innovation Centre for Environment and Resources, Shanghai University of Engineering Science, No. 333 Longteng Road, Songjiang District, Shanghai 201620, China
Zhujie Bi: Shanghai Environmental Sanitary Engineering Design Institute Co., Ltd., Shanghai 200232, China
Nannan Gu: Shanghai Environmental Sanitary Engineering Design Institute Co., Ltd., Shanghai 200232, China
Tingting Hu: Innovation Centre for Environment and Resources, Shanghai University of Engineering Science, No. 333 Longteng Road, Songjiang District, Shanghai 201620, China
Guanghui Li: Innovation Centre for Environment and Resources, Shanghai University of Engineering Science, No. 333 Longteng Road, Songjiang District, Shanghai 201620, China
Nan Zhang: Centre for Process Integration, Department of Chemical Engineering and Analytical Science, The University of Manchester, Manchester M13 9PL, UK
Jiaqi Lu: Innovation Centre for Environment and Resources, Shanghai University of Engineering Science, No. 333 Longteng Road, Songjiang District, Shanghai 201620, China

Sustainability, 2024, vol. 16, issue 19, 1-27

Abstract: Polyvinyl chloride (PVC) resins are widely used in modern society due to their acid and alkali resistance, low cost, and strong insulation properties. However, the high chlorine (Cl) content in PVC poses significant challenges for its recycling. This study reviews the treatment processes, model construction, and economic and environmental assessments to construct a methodological framework for the sustainable development of emerging dechlorination technologies. In terms of treatment processes, this study summarizes three types of processes, pretreatment, simultaneous dechlorination during chemical recycling, product purification, and emphasizes the necessity of dechlorination treatment from a systematic perspective. Additionally, the construction of models for dechlorination processes is investigated from the laboratory to the industrial production system to macro-scale material, in order to evaluate the potential inventory data and material metabolism behaviors. This review also summarized the methodology framework of Techno-Economic Analysis (TEA) and Life Cycle Assessment (LCA), which can be applied for evaluation of the economic and environmental performance of the dechlorination processes. Overall, this review provides readers with a comprehensive perspective on the state-of-the-art for PVC dechlorination technologies, meanwhile offering sustainable guidance for future research and industrial applications of chemical recycling of PVC waste.

Keywords: PVC waste; dechlorination; chemical recycling; treatment process; model construction; TEA and LCA (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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