Study of bioaugmentation in decolourization of dye solution

Abstract

Today, dye wastewater industry can cause serious pollution due to its high colour content. Therefore, this study examines the ability of pure culture bacteria isolated from activated rubber sludge in removing colour. Different parameters such as initial dye concentration, bacteria dosage and contact time were studied for decolorization of Methylene Blue (MB). The isolated bacteria identified as Streptococcus sp. has the maximum dye decolorization potential of 78% by the end of 2.5 h under optimum condition. Overall, higher bacteria dosage and lower initial dye concentration were found to be more efficient in dye decolorization. This microbial treatment process is simple, fast and economical for the decolorization of dyes. Thus, Streptococcus sp. appears to be useful in processes of environmental and biotechnological significance.