A bioreactor containing 560 mg/L biomass is used for biodegradation of a contami
ID: 202404 • Letter: A
Question
A bioreactor containing 560 mg/L biomass is used for biodegradation of a contaminant at the concentration of 260 mg/L in groundwater. The biodegradation process follows pseudo-first order kinetics (1/X dS/dt - kS), and the rate constant is 0.45 (LIg cell.d). The contaminant concentration is reduced to 18 mg/L after 14 days of biodegradation, while the biomass concentration reaches 680 mg/L. Assuming a constant yield throughout the biodegradation process, determine a) The biomass growth rate (mg/L.d), contaminant utilization rate (mg/L.d), and the b) The biomass growth rate (mg/L.d), contaminant utilization rate (mg/L.d), and specific d) The time (in days) that the maximum biomass concentration has been attained, specific growth rate (d"1) at time zero. growth rate (d') after 14 days. c) The maximum attainable biomass concentration. assuming a constant specific growth rate after 14 days of operation.Explanation / Answer
The correct option is option (b) the biomass growth rate contimant utilization rate and the specific grgrow rate aftet 14 days.