Hydrolase and plastic-degrading microbiota explain degradation of polyethylene terephthalate microplastics during high-temperature composting.

Autor: Li X; School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: lixiaoxiao1995@sjtu.edu.cn., Liu X; School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: xinxin.liu@sjtu.edu.cn., Zhang J; School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China., Chen F; School of Public Administration, Hohai University, Nanjing 211100, China. Electronic address: chenfu@hhu.edu.cn., Khalid M; College of Science and Technology, Wenzhou-Kean University, Wenzhou 325060, China., Ye J; School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: yejieqi@sjtu.edu.cn., Romantschuk M; Faculty of Biological and Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti 15140, Finland. Electronic address: martin.romantschuk@helsinki.fi., Hui N; School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; Faculty of Biological and Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti 15140, Finland; Shanghai Yangtze River Delta Eco-Environmental Change and Management Observation and Research Station, Ministry of Science and Technology, Ministry of Education, 800 Dongchuan Rd., 200240, Shanghai; Shanghai Urban Forest Ecosystem Research Station, National Forestry and Grassland Administration, 800 Dongchuan Rd., 200240, Shanghai, China. Electronic address: nan.hui@sjtu.edu.cn.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2024 Feb; Vol. 393, pp. 130108. Date of Electronic Publication: 2023 Nov 29.
DOI: 10.1016/j.biortech.2023.130108
Abstrakt: This research aims to explore the degradation properties of polyethylene terephthalate (PET) by PET hydrolase (WCCG) in high-temperature composting and its impact on microbial communities. PET degradation, composting parameters and microbial communities were assessed in 220 L sludge composters with PET and WCCG using high-throughput sequencing. Results showed that WCCG addition led to a deceleration of the humification process and a reduction in the relative abundance of thermophilic genera. Potential PET degrading microbiota, e.g. Acinetobacter, Bacillus, were enriched in the plastisphere in the composters where PET reduced by 26 % without WCCG addition. The external introduction of the WCCG enzyme to compost predominantly instigates a chemical reaction with PET, concurently curtailing the proliferation of plastic-degrading bacteria, leading to a 35 % degradation of PET. Both the WCCG enzyme and the microbiota associated with plastic-degradation showed the potential for reducing PET, offering a novel method for mitigating pollution caused by environmental microplastics.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: