title: Application of isolated bacterial consortium in UMBR for detoxification of textile effluent: comparative analysis of resultant oxidative stress and genotoxicity in catfish (Heteropneustes fossilis) exposed to raw and treated effluents.
abstract: A bacterial consortium isolated from activated sludge was identified to be Bacillus sp., Pseudomonas sp., Shigella sp. and E. coli. and was found capable of 98.62 % decolourization of highly toxic textile effluent, when applied in an ultrafiltration (UF) membrane bioreactor (UMBR). Ceramic capillary UF membranes prepared over low cost support proved to be highly efficient in adverse experimental conditions. The UMBR permeate and untreated textile effluent (40 % (v/v)) was then used to treat Heteropneustes fossilis for a comparative assessment of their toxicity. Micronucleus count in peripheral blood erythrocytes and comet assay carried out in liver and gill cells showed significantly lower nuclear and tissue specific DNA damage respectively in organisms exposed to membrane permeate and was further supported by considerably lower oxidative stress response enzyme activities in comparison to raw effluent treated individuals. The results indicate efficient detoxification of textile effluent by the UMBR treatment using the isolated bacterial consortium.
authors.affiliation: Ceramic Membrane Division, CSIR - Central Glass and Ceramic Research Institute, Kolkata, India.
authors.forename: Priya
authors.initials: P
authors.lastname: Banerjee
authors.forename: Sandeep
authors.initials: S
authors.lastname: Sarkar
authors.forename: Tanmoy Kumar
authors.initials: TK
authors.lastname: Dey
authors.forename: Madhurima
authors.initials: M
authors.lastname: Bakshi
authors.forename: Snehasikta
authors.initials: S
authors.lastname: Swarnakar
authors.forename: Aniruddha
authors.initials: A
authors.lastname: Mukhopadhayay
authors.forename: Sourja
authors.initials: S
authors.lastname: Ghosh
mesh_terms: D000818:Animals; D001419:Bacteria / Q000378:metabolism*; D001673:Biodegradation, Environmental; D001681:Biological Assay; D019149:Bioreactors; D002397:Catfishes / Q000502:physiology*; D020552:Comet Assay; D004249:DNA Damage; D015162:Micronucleus Tests; D018384:Oxidative Stress / Q000187:drug effects*; D013783:Textile Industry; D014462:Ultrafiltration; D062065:Wastewater / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D062065:Wastewater