Microbial decolorization of azo dyes and dye industry effluent by Fomes lividus

• Published in: World journal of microbiology & biotechnology Vol. 19; no. 6; pp. 591 - 593
• Main Authors: SELVAM, K, SWAMINATHAN, K, CHAE, Keon-Sang
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer 01.08.2003; Springer Nature B.V
• Subjects: azo dyes; Biological and medical sciences; Biotechnology; Dyes; Fomes lividus; Fundamental and applied biological sciences. Psychology; Fungi; Fungi; dye industry effluent; treatment; Basidiomycetes; decolorization; Fomes; Fames lividus; Azo dyes; Thallophyta
• ISSN: 0959-3993; 1573-0972
• DOI: 10.1023/A:1025128327853

The white rot fungus, Fomes lividus, was isolated from the logs of Shorea robusta in the Western Ghats region of Tamil Nadu, India. The fungus was tested for decolorization of azo dyes such as orange G (50 mu M) congo red (50 mu M) amido black 10B (25 mu M) and also for colour removal from dye industry effluents. The results revealed that the fungus could remove only 30.8% of orange G in the synthetic solution, whereas congo red and amido black 10B were removed by 74.0 and 98.9% respectively. A dye industry effluent was treated by the fungus in batch and continuous mode. In batch mode treatment, a maximum decolorization of 84.4% was achieved on day 4, and in continuous mode a maximum decolorization of 37.5% was obtained on day 5. The colour removal by the basidiomycete fungus might be due to adsorption of the dyes to the mycelial surface and metabolic breakdown. These results suggested that the batch mode treatment of Fomes lividus is one of the most efficient ways for colour removal in dye industry effluents.