title: Biodecolorization of Reactive Yellow-2 by Serratia sp. RN34 Isolated from Textile Wastewater.
abstract: Remediation of colored textile wastewaters is a matter of interest. In this study, 49 bacteria were isolated from the textile wastewater and tested for their ability to decolorize reactive yellow-2 (RY2) dye. The most efficient isolate, RN34, was identified through amplification, sequencing, and phylogenetic analysis of its 16S rDNA and was designated as Serratia sp. RN34. This bacterium was also found capable of decolorizing other related reactive azo-dyes, including reactive black-5, reactive red-120, and reactive orange-16 but at varying rates. The optimum pH for decolorization of RY2 by the strain RN34 was 7.5 using yeast extract as cosubstrate under static incubation at 30 °C. The strain RN34 also showed potential to decolorize RY2 in the presence of considerable amounts of hexavalent chromium and sodium chloride. A phytotoxicity study demonstrated relatively reduced toxicity of RY2 decolorized products on Vigna radiata plant as compared to the uninoculated RY2 solution.
authors.affiliation: Department of Environmental Sciences & Engineering, Government College University, Faisalabad, Pakistan.
authors.forename: Rabia
authors.initials: R
authors.lastname: Najme
authors.forename: Sabir
authors.initials: S
authors.lastname: Hussain
authors.forename: Zahid
authors.initials: Z
authors.lastname: Maqbool
authors.forename: Muhammad
authors.initials: M
authors.lastname: Imran
authors.forename: Faisal
authors.initials: F
authors.lastname: Mahmood
authors.forename: Hamid
authors.initials: H
authors.lastname: Manzoor
authors.forename: Tahira
authors.initials: T
authors.lastname: Yasmeen
authors.forename: Tanvir
authors.initials: T
authors.lastname: Shehzad
mesh_terms: D001391:Azo Compounds / Q000737:chemistry / Q000378:metabolism*; D019149:Bioreactors; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000032:analysis*; D012705:Serratia / Q000378:metabolism*; D013783:Textile Industry; D014227:Triazines / Q000737:chemistry / Q000378:metabolism*; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000378:metabolism*; D018508:Water Purification
chemical_list: D001391:Azo Compounds; D007220:Industrial Waste; D014227:Triazines; D062065:Wastewater; D014874:Water Pollutants, Chemical; C479462:reactive yellow 2