Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 6 Issue 1, 2004; Page No.(1-6 )

BIOKINETIC PARAMETERS AS AN INDICATOR TO AMMONIA TOXICITY IN LEACHATE TREATMENT USING MEMBRANE BIOREACTORS

B. WICHITSATHIAN, S. SINDHUJA, C. VISVANATHAM AND K.H. AHN

Abstract

The impact of ammonia toxicity in the biological leachate treatment was evaluated using biokinetic and pilot-scale membrane bioreactor. The biokinetic parameters were measured using respirometer by varying the substrate and ammonia concentration. A maximum specific growth rate of 0.42 d-1 was obtained and was found to be lower than that of the domestic wastewater (6 d-') indicating the difficulty in biodegradability. A bacterial inhibition of 28% occurred at ammonium concentration of 1,000-2,000 mg 1-1, when toxicity was evaluated using respirometer, Further, when leachate-was treated in membrane bioreactor, similar pattern of bacterial inhibition was observed.

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