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Anaerobic Biodegradability of Commercial Bioplastic Products: Systematic Bibliographic Analysis and Critical Assessment of the Latest Advances

Journal of Contaminant Hydrology 2023 23 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Marica Falzarano, Alessandra Polettini, Raffaella Pomi, Andreina Rossi, Tatiana Zonfa

Summary

Researchers systematically reviewed the anaerobic biodegradability of commercial bioplastics, finding that degradation rates vary widely depending on polymer type and blend composition, and that current testing standards are insufficient to predict real-world breakdown under both controlled and uncontrolled conditions.

Polymers
Body Systems

Bioplastics have entered everyday life as a potential sustainable substitute for commodity plastics. However, still further progress should be made to clarify their degradation behavior under controlled and uncontrolled conditions. The wide array of biopolymers and commercial blends available make predicting the biodegradation degree and kinetics quite a complex issue that requires specific knowledge of the multiple factors affecting the degradation process. This paper summarizes the main scientific literature on anaerobic digestion of biodegradable plastics through a general bibliographic analysis and a more detailed discussion of specific results from relevant experimental studies. The critical analysis of literature data initially included 275 scientific references, which were then screened for duplication/pertinence/relevance. The screened references were analyzed to derive some general features of the research profile, trends, and evolution in the field of anaerobic biodegradation of bioplastics. The second stage of the analysis involved extracting detailed results about bioplastic degradability under anaerobic conditions by screening analytical and performance data on biodegradation performance for different types of bioplastic products and different anaerobic biodegradation conditions, with a particular emphasis on the most recent data. A critical overview of existing biopolymers is presented, along with their properties and degradation mechanisms and the operating parameters influencing/enhancing the degradation process under anaerobic conditions.

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