DECOLORIZATION OF REMAZOL BLUE AND REMAZOL RED USING ASPERGILLUS NIGER ISOLATED FROM TEXTILE WASTEWATER

Document Type : Review Article

Authors

1 Department of Occupational Environment, National Institute of Occupational Safety and Health (NIOSH).

2 Department of Microbiology, Faculty of Science, Ain Shams University

3 Department of Microbiology, Faculty of Agriculture, Ain Shams University

4 Department of Basic Sciences Institute of Environmental Studies and Research, Ain Shams University.

Abstract

Discharge of textile dyes in wastewater of textile factories represents a major environment problem threatening the aquatic life. The decolorization of such harmful chemicals is of paramount importance. In this work, Aspergillus niger, a brown rot fungi, isolated from the effluent samples around the textile industry of El- Baragil, Giza, Egypt was evaluated for its efficiency in decolorization of two textile dyes; Remazole blue and Remazol red. Effluent samples were also analyzed for their physiochemical properties. The optimum conditions for decolorization were found to be 4 days incubation, 30 ° C and pH4 in Sabouraud liquid medium supplemented with dextrose (10 g/l) and ammonium sulfate (2 g/l) as a carbon and nitrogen source, respectively. The response of the isolate to the increase in dye concentrations was found to be growth inhibitory. Decolorization extent and facile conditions showed the potential for the A.niger to be used in biological treatment of textile dyes.

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