/+//Biodecolorization of Reactive Black5 and Reactive Red120 azo dyes using bacterial strains isolated from dairy effluents

Sadeghi, M. and Forouzandeh, S. and Nourmoradi, H. and Heidari, M. and Ahmadi, A. and Jami, M. S. and Abdizadeh, R. and Mohammadi‑Moghadam, F. (2018) /+//Biodecolorization of Reactive Black5 and Reactive Red120 azo dyes using bacterial strains isolated from dairy effluents. International Journal of Environmental Science and Technology..

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Abstract

Abstract In a biological treatment of an industrial efuent, the indigenous bacteria have already been used. In this study, the three bacteria strains which are potent in the decolorization of azo dyes were isolated from dairy efuent and used for decolorization of Reactive Black5 and Reactive Red120 azo dyes and decolorization test of each dye was conducted at fve concentration levels (10, 50, 100, 150, and 200 mg/l). The pH of which was adjusted to 7 and incubated at 37 °C for 3 days. The strains were identifed as Staphylococcus sp. and Micrococcus luteus strains by 16S rRNA gene sequences analysis. The strains were deposited in GenBank with accession numbers of KX180131, KX180132, and KX180133 and submitted to laboratory identifer named Staphylococcus sp. MEH038S, Micrococcus luteus strain SEH038S, and Micrococcus luteus strain FEH038S. Three days into incubation, the lowest efciency was at a concentration level of 200 mg/l for each dye. Decolorization efciencies for Staphylococcus sp. MEH038S, Micrococcus luteus strain SEH038S, and Micrococcus luteus strain FEH038S at the concentration level of 200 mg/l for Reactive Red120 were 89.7, 87.1, and 89.3%, and for Reactive Black5 were 90.8, 90.0, and 89.9%, respectively. Based upon this study, dairy efuents can be used as a suitable alternative to the decolorization of textile wastewater. This study demonstrates a report on grounds of elucidation for the use of nonindigenous bacteria in the treatment of industrial wastewater.

Item Type: Article
Uncontrolled Keywords: s Azo dyes , Biodecolorization , Micrococcus luteus strain FEH038S, Micrococcus luteus strain SEH038S · Staphylococcus sp,MEH038S
Subjects: QW Microbiology and Immunology
Divisions: Faculty of Health > Department of Environmental Health
Faculty of Medicine > Basic Sciences Academic Groups > Department of Parasitology and Mycology
Reserach Vice-Chancellar Department > Cellular and Molecular Research Center
Depositing User: Users 1 not found.
Date Deposited: 29 Aug 2018 04:44
Last Modified: 29 Aug 2018 04:44
URI: http://eprints.skums.ac.ir/id/eprint/7045

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