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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Jan 2008, 29 (1)                                                                                                             Back



paper

Effect of carbon and nitrogen source amendment on synthetic dyes decolourizing efficiency of white-rot fungus, Phanerochaete chrysosporium

Deepak Pant*1, 2, Anoop Singh1, 2, Yamini Satyawali1, 2 and R. K. Gupta1

1Department of Environmental Sciences, College of Basic Sciences and Huminities, G.B. Pant University of

Agriculture and Technology, Pantnagar - 263 145, India

2The Energy and Resources Institute (TERI), Darbari Seth Block, India Habitat Centre, Lodhi Road, New Delhi - 110 003, India

(Received: March 09, 2006 ; Revised received: November 02, 2006 ;? Accepted: December 05, 2006)

Abstract: Decolourization activity of Phanerochaete chrysosporium for three synthetic dyes viz., congo red, malachite green and crystal violet and impact of additional carbon and nitrogen supply on decolourization capacity of fungus were investigated. Maximum decolourizing capacity was observed up to 15 ppm. Addition of urea as nitrogen source and glucose as carbon source significantly enhanced decolourizing capacity (up to 87%) of fungus. In all the cases, both colour and COD were reduced more in non-sterilized treatments as compared to sterilized ones. Significant reductions in COD content of dye solutions (79-84%) were recorded by fungus supplied with additional carbon and nitrogen. A highly significant correlation (r = 0.78, p<0.001) between colour and COD of dye solutions was recorded. Thus, a readily available carbon and nitrogen source is imperative to enhance the bioremediation activity of this fungus which has been the most suitable for synthetic dyes and textile industry wastewater treatment.

Key words:?? Textile dyes, Decolourization, COD, Phanerochaete chrysosporium

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