DECOLORIZATION AND BIODEGRADATION OF SYNTHETIC DYES IN INDUSTRIAL EFFLUENTS BY ASPERGILLUS NIGER AND PENICILLIUM CHRYSOGENUMRAMALINGAM , MUTHU DHARANI , SARASWATHY AND SARAVANAN
The objective of the study is to check the degradation and decolourisation ability of eight most commonly used synthetic dyes and industrial effluents by two fungal isolates Aspergillus nigerand Penicillium chrysogenum. Malachite green, Acid green, Congo red, Red F2B, Blue FN3G, Commassie Brilliant Blue, Bromophenol Blue and Direct Violet were used. Dyes in the dye bath, hot wash, and cold wash liquors of textile dyeing effluents were degraded and decolorized by both A. niger and P. chrysogenum.Decolourization of dyes in textile dyeing effluents by these fungi took place in two stages: (i) adsorption of the dyes on to the surface of the biomass, and (ii) degradation of dyes. UV-Visible spectrophotometer analysis showed that all dyes were completely decolorized and degraded after 72 h using A. nigerand 120 h using P.chrysogenum. Both A. nigerand P. chrysogenumwere found to be efficient for the degradation of dyes in dyebath, hotwash liquor, cold wash liquor-1 and cold wash liquor-2 of textile dyeing effluents and these fungi can be exploited industrially to address the pollution problems.
Enter your contact information below to receive full paper.