DL-alanine promotes the colonization of Pseudomonas aeruginosa and their synergistic enrichment of selenium and decrease of cadmium absorption by Brassica napus

Journal of Hazardous Materials, Год журнала: 2025, Номер unknown, С. 138154 - 138154

Опубликована: Апрель 1, 2025

Язык: Английский

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Anaerobic Bioremediation of Acid Mine Drainage Using Sulphate-Reducing Bacteria: Current Status, Challenges, and Future Directions

Sustainability, Год журнала: 2025, Номер 17(8), С. 3567 - 3567

Опубликована: Апрель 15, 2025

Biological reduction of sulphates has gradually replaced unit chemical processes for the treatment acid mine drainage (AMD), which exerts a significant environmental impact due to its elevated acidity and high concentrations heavy metals. Bioremediation is optimally suited AMD because it cost-effective efficient. Anaerobic bioremediation employing sulphate-reducing bacteria (SRB) presents promising solution by facilitating sulphate sulphide. The formed can precipitate immobilise metals, assisting them in their removal from contaminated wastewater. This paper examines current status SRB-based bioremediation, with an emphasis on recent advances microbial processes, reactor design, efficiencies. Reviewed studies showed that bioreactors achieve up 93.97% reduction, metal recovery rates 95% nickel, 98% iron copper, 99% zinc under optimised conditions. Furthermore, used glycerol ethanol as carbon source improved efficiency achieving pH neutralisation 2.8 7.5 within 14 days hydraulic retention time. Despite results achieved so far, several challenges remain. These include need optimal conditions, management toxic hydrogen sulphide production, economic feasibility large-scale applications. Future directions are proposed address these challenges, focusing genetic engineering SRB, integration other technologies, development sustainable strategies. Ultimately, this review provides valuable information improve scalability remediation methods, contributing more mining practices conservation. To ensure relevance credibility, regency were criteria literature search. sourced directly related subject review, latest research, typically last 5 10 years, was prioritised.

Язык: Английский

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Biofilm-Mediated Low-Density Polyethylene Degradation by Gordonia sp. isolated from Plastic Contaminated Municipal Waste Dumping Site: An Optimization Study

Journal of environmental chemical engineering, Год журнала: 2025, Номер 13(3), С. 117091 - 117091

Опубликована: Май 13, 2025

Язык: Английский

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