Biodeterioration of Compost-Pretreated Polyvinyl Chloride Films by Microorganisms Isolated From Weathered Plastics

0555093 - MBÚ 2023 RIV CH eng J - Journal Article
Novotný, Čeněk - Fojtík, J. - Mucha, M. - Malachová, K.
Biodeterioration of Compost-Pretreated Polyvinyl Chloride Films by Microorganisms Isolated From Weathered Plastics.
Frontiers in Bioengineering and Biotechnology. Roč. 10, FEB 10 2022 (2022), č. článku 832413. ISSN 2296-4185. E-ISSN 2296-4185
Institutional support: RVO:61388971
Keywords : low-density polyethylene * polycyclic aromatic-hydrocarbons * phthalate-esters * sos chromotest * biodegradation * degradation * mutagenicity * genotoxicity * soil * colonization * polyvinyl chloride * biodeterioration * composting * SSF culture * Trichoderma hamatum * Bacillus amyloliquefaciens
OECD category: Microbiology
Impact factor: 5.7, year: 2022
Method of publishing: Open access
https://www.frontiersin.org/articles/10.3389/fbioe.2022.832413/full

Polyvinyl chloride (PVC) is a petroleum-based plastic used in various applications, polluting the environment because of its recalcitrance, large content of additives, and the presence of halogen. In our case study, a new, two-stage biodegradation technology that combined composting process used for PVC pretreatment with a subsequent PVC attack by newly-isolated fungal and bacterial strains under SSF conditions was used for biodegradation of commercial PVC films. The novelty consisted in a combined effect of the two biodegradation processes and the use for augmentation of microbial strains isolated from plastic-polluted environments. First, the ability of the newly-isolated strains to deteriorate PVC was tested in individual, liquid-medium- and SSF cultures. Higher mass-reductions of PVC films were obtained in the former cultures, probably due to a better mass transfer in liquid phase. Using the two-stage biodegradation technology the highest cumulative mass-reductions of 29.3 and 33.2% of PVC films were obtained after 110 days with Trichoderma hamatum and Bacillus amyloliquefaciens applied in the second stage in the SSF culture, respectively. However, FTIR analysis showed that the mass-reductions obtained represented removal of significant amounts of additives but the PVC polymer chain was not degraded.
Permanent Link: http://hdl.handle.net/11104/0331767