Enhanced microbial degradation of PET and PS microplastics under natural conditions in mangrove environment

Auta, H. S. and Abioye, O. P. and Aransiola, S. A. and Bala, J. D. and Chukwuemeka, V. and Hassan, A. and Aziz, A. and Fauziah, Shahul Hamid (2022) Enhanced microbial degradation of PET and PS microplastics under natural conditions in mangrove environment. Journal of Environmental Management, 304. ISSN 0301-4797, DOI https://doi.org/10.1016/j.jenvman.2021.114273.

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In-situ bioremediation of mangrove soil contaminated with polyethylene terephthalate (PET) and polystyrene (PS) microplastics was investigated using indigenous microbial consortium with adequate capacity to degrade the plastics. Eight (8) bacteria were isolated from plastic/microplastic-inundated mangrove soil and screened for the ability to degrade PET and PS microplastics. Optical density at 600 nm and colony forming unit counts were measured to evaluate the growth response of the microbes in the presence of PS and PET microplastics at different times of exposure. Structural and surface changes that occurred post biodegradation on the micro-plastics were determined through EDS and SEM analysis. The obtained results demonstrated the elongation and disappearance of peaks, suggesting that the microbial consortium could modify both types of microplastics. The overall results of the microplastic degradation showed varied degrees of weight loss after 90 experimental days, with the treated plot recorded 18% weight loss. The augmented soil was increased in the concentrations of Si S, and Fe and decreased in the concentrations of C, O, Na, Mg, Al, Cl, and K after bioremediation.

Item Type: Article
Uncontrolled Keywords: Polyethylene terephthalate;Polystyrene biodegradation; Mangrove;Bacteria;Marine
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QK Botany
S Agriculture > SD Forestry
Divisions: Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 28 Jul 2022 03:08
Last Modified: 28 Jul 2022 03:08
URI: http://eprints.um.edu.my/id/eprint/33653

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