The high cost of culture growth medium is one of the problems faced in the scaling-up of biological processes involved in wastewater treatment. This makes it imperative to find a useful, cheap and easily available alternative source for culture growth medium. The possibility of using sugarcane bagasse (SCB), solid pineapple waste (SPW) and soybean meal (SBM) as alternative sources for culture medium is preferable as these agricultural wastes are easily available, cheap and abundantly grown. The present work highlights the use of SCB, SPW and SBM to sustain the bacterial population for the Cr(VI) reduction process. Growth of A. haemolyticus in agricultural wastes was measured by optical density (00600) followed by viable cell counts. Reduction of Cr(VI) was determined using diphenylcarbazide method. For all Cr(VI) concentrations tested (10-100 mg/L), SCB-adapted A. haemolyticus showed the highest reduction ranging from 92-99% followed by SPW and SBM with 40-94% and 21-85% reduction resp.....

543 hits