Green bioprocess for degradation of synthetic dyes mixture using consortium of laccase-producing bacteria from Himalayan niches

Ambika, Vijay Kumar, Aanchal Jamwal, Virender Kumar, Dharam Singh*

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13 Citationer (Scopus)

Abstract

Microbial remediation of synthetic dyes from industrial effluents offers a sustainable and eco-friendly alternative. Herein, laccase-producing bacteria were isolated from decaying wood niches in the Himalayan region. A bacterial consortium (BC–I) was developed to decolorize synthetic dyes cocktail of three major groups (azo, anthraquinone, and triphenylmethane). BC-I consisted of Klebsiella sp. PCH427, Enterobacter sp. PCH428, and Pseudomonas sp. PCH429 can decolorize 77% of 240 mg/L dyes cocktail in 44 h at 37 °C. BC-I works under wide pH (4.0–10.0), a high salt concentration (NaCl, 10%), and low nutrients. Further, FT-IR and LC-MS validated the dyes cocktail degradation and identified the degraded products. Additionally, phytotoxicity analysis of BC-I treated dyes cocktail significantly reduced the toxicity to Vigna radiata and Cicer arietinum compared to untreated dyes cocktail. The present study has simulated environmental challenges of acidic, alkaline, and saline industrial dyes effluents, which are significant to bioremediation.

OriginalsprogEngelsk
Artikelnummer114764
TidsskriftJournal of Environmental Management
Vol/bind310
ISSN0301-4797
DOI
StatusUdgivet - 15 maj 2022
Udgivet eksterntJa

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