Biodegradation of polyethylene (PE), polypropylene (PP), and polystyrene (PS) microplastics by floc-forming bacteria, Bacillus cereus strain SHBF2 isolated from a commercial aquafarm

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 10, 2024

The ubiquitous proximity of the commonly used microplastic (MP) particles particularly polyethylene (PE), polypropylene (PP), and polystyrene (PS) poses a serious threat to environment, human health globally. Biological treatment as an environment-friendly approach counter MPs pollution has recent interest when bio-agent beneficial functions in their ecosystem. This study aimed utilize floc-forming bacteria B. cereus SHBF2 isolated from aquaculture farm reducing (PE, PP, PS) environment. were inoculated for 60 days media containing sole carbon source. On different incubation (DOI), bacterial growth analysis was monitored harvested examine weight loss, surface changes, alterations chemical properties. After DOI, highest loss recorded PE, 6.87 ± 0.92%, which further evaluated daily reduction rate (k), 0.00118 gday^{− 1}, half-life (t_1/2), 605.08 138.52 days. OD value (1.74 0.008 Abs.) indicated higher efficiency PP utilization, so colony formation per define volume (1.04 × 10¹¹ CFU/mL). Biofilm formation, erosions, cracks, fragments evident during observation tested using scanning electron microscope (SEM). carbonyl alcohol group due oxidation hydrolysis by strain confirmed Fourier transform infrared spectroscopic (FTIR) analysis. Additionally, pH CO₂ evolution each type ensures activity mineralization particles. findings this have degree biodegradation all selected SHBF2, aquaculture, demonstrated great potential use efficient degrading bacterium biofloc farming system near future guarantee sustainable green production.

Language: Английский

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In Situ H2o2 Production from Self-Sufficient Heterogeneous Fenton Reaction Over Fe0/Mos2-X for Potential Environmental Remediation Applications

Published: Jan. 1, 2024

The widespread application of the Fenton reaction in environmental remediation has been significantly hampered by continuous external supply H2O2, slow Fe3+/Fe2+ cycle rate, high energy requirements, and necessity pH pre-adjustment. Herein, a novel self-sufficient heterogeneous system based on Fe0/MoS2-x was designed, fabricated, optimized to effectively address these limitations. combined presence Fe0 sulfur vacancies sites MoS2-x played pivotal role situ generation H2O2via two-step single-electron reduction without any consumption. existence dual active resulted considerable increase H2O2 yield (up 0.6 mM/g/h) neutral aqueous solution. Furthermore, rate accelerated Mo6+/Mo4+/Moδ+ sites. These factors collectively contributed impressive performance this advanced oxidation process degrading complex pollutants (e.g., polyethylene, model plastic) under conditions. In addition its outstanding catalytic performance, exhibited superior reusability stability. Notably, catalyst reactivity well sustained common aquatic such as inorganic anions, dissolved organic pollutants, for other polymer types. This study demonstrates that with capacity potential be used practical applications.

Language: Английский

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Direct evidence for selective microbial enrichment with plastic degradation potential in the plastisphere

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 954, P. 176576 - 176576

Published: Sept. 27, 2024

Language: Английский

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Natural Products Produced by the Species of Bacillus cereus Group: Recent Updates

Journal of Basic Microbiology, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 21, 2024

ABSTRACT Bacillus cereus group produces diverse antimicrobial compounds through different metabolic pathways, including amino acid‐based compounds, sugar derivatives, volatile and miscellaneous compounds. These exhibit antibacterial antifungal activities against various plant pathogens, promoting growth enhancing tolerance to abiotic stresses. They also nematicidal nematodes antagonistic effects pathogens in aquatic animals, inducing immune responses. Moreover, B. bacteria play a significant role bioremediation by breaking down or neutralizing environmental pollutants, such as plastics, petroleum products, heavy metals, insecticides. produce enzymes like laccases, lipases, proteases, oxidases, contributing the degradation of these pollutants. In food industry, they can cause poisoning due their production enterotoxins. However, are utilized industrial applications, producing environmentally friendly bio‐based materials, biofertilizers, nanoparticles. Notably, transforms selenite into selenium nanoparticles, which have health benefits, cancer prevention. summary, applications agriculture, bioremediation, medicine, sustainable eco‐friendly solutions across multiple fields. this review, we revised characteristics every species; highlighted more important secreted species The aim is explain available secondary metabolites classify from group, increasing knowledge about taxonomy group.

Language: Английский

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In situ H2O2 production from self-sufficient heterogeneous Fenton reaction over Fe0/MoS2−x for potential environmental remediation applications

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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