Kinetic modelling of yeast growth and pollutant removal in secondary effluent

In recent years, there has been significant interest in yeast-based wastewater treatment due to its high pollutant removal rate and ability perform non-sterile environments. this work, a kinetic model was developed predict yeast growth substrate consumption during treatment. To determine the biological constants for use models, unique approach is presented. Candida utilis cultivated synthetic wastewater, using eight different ratios of carbon, nitrogen phosphorus rate, rates nitrogen, phosphorus. The concentrations C, N P were chosen within range secondary effluent wastewater. all experiments, carbon found be limiting substrate, 100 % TOC achieved cases. reduced COD concentration by up 99 <24 h. model, both satisfactorily described Monod kinetics. apparent half-saturation coefficients phosphorus, determined via optimization function initial concentration. maximum specific 0.59 h ?1 . This used on substrates, predicted data with an R 2 above 80 %. Both experimental results suggest that can tertiary simple here applied find other microorganisms. • A mathematical presented constant multi-substrate Half-saturation not but dependent upon substrates. Change pH does affect relation coefficient Only coefficient/Yield varies respect pH.