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Noteworthy compatibility of microbial consortium mediated microplastics degraded metabolites with physiochemical, biological, including microbiological parameters of diverse aquatic media
Summary
Scientists found a mix of natural microbes that can break down plastic bottles (PET microplastics) in water without creating harmful byproducts—the breakdown products didn't disrupt water chemistry, harm fish, or affect bacteria levels in tests. This matters because it suggests we may be able to clean up plastic pollution in water sources using a biological approach that doesn't trade one problem (plastic waste) for another (toxic chemicals), though more real-world testing is still needed before this could be used at scale.
Investigating the environmental ramifications of Polyethylene terephthalate microplastics degradation, this study centered on the deployment of a multi-species microbial consortium-comprising Azotobacter chroococcum, Rhizobium leguminosarum, Azospirillum brasilense, and Trichoderma viride-to initiate biotransformation pathways under laboratory conditions. Metabolites were rigorously characterized using FTIR and GC-MS, then assessed their influence on a range of aquatic systems, including reservoir, reverse osmosis-purified, and distillery-derived waters. Quantitative analyses of ionic composition, acid-base buffering, and oxygenation metrics revealed that the introduction of microbial metabolites did not disrupt the established physicochemical profiles. Concurrent microbiological evaluations demonstrated unchanged growth kinetics and biofilm formation in pathogenic species such as Salmonella enterica, Klebsiella pneumoniae, and Citrobacter freundii. Bioassays with Oreochromis niloticus further affirmed normative survival and developmental indices. Computational modelling of molecular interactions with Micromonas commoda proteins substantiated non-toxicity at the metabolic level. These findings collectively indicate that microbial PET microplastic remediation produces environmentally compatible outcomes, preserving aquatic system stability, and safeguarding biota.