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Characterization and GC–MS-Based Identification of Possible PVC Degradation Pathways of Bacteria for Sustainable Microplastic Bioremediation
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Scientists found five types of bacteria that can break down PVC plastic, a common but hard to recycle material found in pipes, packaging and medical products. In lab tests, these bacteria ate away 20 to 50% of the plastic over a month, offering a possible eco-friendly way to clean up plastic pollution that can otherwise linger in our environment and bodies for decades.
Polyvinyl chloride (PVC), due to its persistent nature and the hazardous effects associated with chlorine content, poses global challenges like accelerated environmental pollution, public health crises and an increased economic burden. Its sustainable decontamination from the environment could be possible with the assistance of bacteria. The current study was initiated to achieve this sustainable goal. PVC-degrading bacteria were isolated via the serial dilution method using minimal salt medium (MSM) supplemented with PVC as a sole carbon source and characterized via 16S RNA gene sequencing analysis, growth curve and PVC strip weight loss assays, antibiotic sensitivity profiling, FTIR and GC–MS-based metabolic profiling. Five isolates, Achromobacter xylosoxidans SBBPVC1, Bacillus licheniformis SBBPVC2, Pseudomonas citronellolis SBBPVC3, P. stutzeri SBBPVC4 and Bacillus flexus SBBPVC5 were identified. All were fast-growing, with PVC degradation efficiency ranging between 20–50% per 30 days. The FTIR spectral comparison with the control clearly indicated peak variations in regions 1100–1250, 1370, 1460 and 1720–1740 cm−1, corresponding to C-O and C-C, CH3, CH2 and C=O bond vibrations, validating PVC degradation in the presence of bacteria. GC–MS-based identification of four esters, i.e., 1-methyl heptyl, isooctyl, adipic acid, methyl octyl and octyl myristate esters, along with aliphatic alcohols and aldehydes, confirmed the degradation of PVC and its use as a carbon source by bacteria. Bacteria explored in current study could be used as bioremediating agents for PVC decontamination of the environment.
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Scientists isolated bacteria from an Indonesian landfill and tested their ability to break down polyvinyl chloride (PVC) microplastics, using molecular and bioinformatic approaches to identify the best degraders. The findings point toward bioremediation as a potential tool for reducing persistent PVC plastic waste, one of the more toxic and durable plastic types in the environment.
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Researchers isolated a soil bacterium called Streptomyces gobitricini and tested its ability to break down PVC microplastics over 90 days. The bacterium achieved up to 66 percent weight reduction of the PVC particles and formed biofilms on the plastic surfaces. The study suggests that naturally occurring soil bacteria could potentially be harnessed for bioremediation of one of the most persistent and hazardous types of plastic waste.
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Researchers identified a bacterium called Bacillus albus that can break down PVC, one of the most common and hardest-to-degrade types of plastic, using a specific enzyme called alpha/beta hydrolase. Computer modeling showed that this enzyme can effectively bind to PVC-derived compounds and begin breaking them down. While still in early research stages, this bacterial approach could eventually help address the growing problem of PVC microplastic contamination in the environment.
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Scientists found that natural bacteria living in soil and compost can break down PVC plastic (the kind used in pipes and packaging), losing up to 13% of its weight in just 90 days when buried in warm soil. This matters because PVC pollution is a major environmental problem, and these findings suggest that harnessing everyday soil microbes—rather than relying on lab-grown specialty bacteria—could offer a practical, low-cost way to help break down plastic waste before it fragments into microplastics that can end up in our food, water, and bodies.
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Researchers isolated two novel bacterial strains — Stutzerimonas sp. NH2 and Glutamicibacter nicotinae NH27 — from plastic-contaminated soil and found that their combined consortium degraded PVC microplastics by nearly 27% in weight, with SEM, FTIR, and GC-MS analyses confirming structural breakdown and detection of degradation byproducts.
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