Journal of Pure and Applied MicrobiologyVol. 3 No. 2

Effect of pH and Nutrient Starvation on Biodegradation of Azo Dyes by Phanerochaete chrysosporium-Rp78

K. Haritha and K.R.S. Sambasiva Rao

Centre for Biotechnology, Acharya Nagarjuna University Nagarjunanagar, Guntur - 522 510, India.

Received on 17 April 2009 and accepted on 13 May 2009



Azodyes are potential chemical pollutants of industrial origin. The effect of pH and starvation of certain nutrients on biodegradation of reactive azodyes- Procion Brilliant Red H-E7B (Reactive Red 141), Procion Yellow H-E4 (Reactive yellow 84), Procion Navy Blue H-ER (Reactive blue 171) were studied. The high percentage of degradation was achieved at dye concentrations 12 mg L-1 for procion brilliant red i.e. 64.16%, 14 mg/l for procion navy blue and procion yellow dyes 76% and 57.14%respectively. The Nutrient limited media having 0.5% glucose, 0.06% Aspargine, 0.2% MgSO47H2O and 0.5% KH2Po4 at a pH-4.5 was found to be very effective for the degradation of selected dyes.

Keywords : Reactive Azodyes, degradation Textile industry, Bioremediation.