Potential for biodegradation of microplastics in thermophilic anaerobic digesters

Jeppe Lund Nielsen*, N.K. Pedersen, Asal Peydaei, Eustace Fernando, Leonid Gurevich, Peter Fojan, Reinhard Wimmer, Nadieh de Jonge

*Corresponding author

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Abstract

Microplastics have emerged as new environmental pollutants. In this study biodegradation of polypropylene under thermophilic conditions were observed to be several orders higher than in any other environment investigated previously. A series of imaging AFM and SEM revealed presence of oxidation products accumulated on the surface, while spectroscopic analysis of the extracted and concentrated products were analysed by FTIR, Raman and NMR. The spectroscopic analysis revealed important insight into the composition, and a model of the polymer breakage involving formation of integrated cis-configured double bonds (olefins). The findings show a high potential for biodegradation of (micro)plastic in conventional ADs. The results furthermore support the use of applying anaerobic digesters for the treatment of highly energetic household waste with a high content of plastics.
Original languageEnglish
Title of host publicationAnaerobic Digestion Conference AD16
Publication date2019
Publication statusPublished - 2019
Event16th IWA World Conference on Anaerobic digestion - Delft, Netherlands
Duration: 23 Jun 201927 Jun 2019
https://www.ad16conference.com/

Conference

Conference16th IWA World Conference on Anaerobic digestion
CountryNetherlands
CityDelft
Period23/06/201927/06/2019
Internet address

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