Treatment of tannery effluent: An effective biological enhancement approach

Abstract

AbstractThe water pollution due to tannery industries that contaminate river water and other spheres, is a side effect of industry expansion. The research focused on the biological removal of synthetic azo dyes by using biological treatment under aerobic conditions. Through morphological observation, biochemical test, and 16S rRNA sequence analysis the isolated bacteria were determined to be Aeromonas caviae, Enterobacter sichuanensis. Reduction of the organic content present in the tannery effluent and removal of the nutrients that cause pollution or inactivate potential pathogenic microorganisms or parasites. Optimized the azo dye degradation conditions at the temperature of 37°C, at pH 7 in 10% inoculum concentration at the time of 48th hour where novel organism capable of performing effective degradation. The metabolite of an aliquot mixture of the optimized condition was analyzed using Fourier Transform Infrared (FTIR) and the results confirmed the reduction of azo dyes. These results indicate that A. caviae and E. sichuanensis can be utilized as a solution for the remediation of tannery industrial effluent containing azo dyes.