Mathur Anil K, Sundaramurthy J, Balomajumder C
Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee-247667, Uttaranchal, India.
J Hazard Mater. 2006 Oct 11;137(3):1560-8. doi: 10.1016/j.jhazmat.2006.04.042. Epub 2006 Apr 29.
The performance of a trickle bed air biofilter (TBAB) in the removal of mono-chlorobenzene (MCB) was evaluated in concentrations varying from 0.133 to 7.187 g m(-3) and at empty bed residence time (EBRT) varying from 37.7 to 188.52 s. More than 90% removal efficiency in the trickle bed air biofilter was achieved for the inlet MCB concentration up to 1.069 g m(-3) and EBRT less than 94.26 s. The trickle bed air biofilter was constructed with coal packing material, inoculated with a mixed consortium of activated sludge obtained from sewage treatment plant. The continuous performance of the removal of MCB in the trickle bed air biofilter was monitored for various gas concentrations, gas flow rates, and empty bed residence time. The experiment was conducted for a period of 75 days. The trickle bed air biofilter degrading MCB with an average elimination capacity of 80 g m(-3) h(-1) was obtained. The effect of starvation was also studied. After starvation period of 8 days, the degradation was low but recovered within a short period of time. Using macrokinetic determination method, the Michaelis-Menten kinetic constant K(m) and maximum reaction rate, r(max) evaluated as 0.121 g m(-3) s(-1) and 7.45 g m(-3), respectively.
在入口单氯苯（MCB）浓度为0.133至7.187 g m(-3)、空床停留时间（EBRT）为37.7至188.52 s的条件下，对滴流床空气生物滤池（TBAB）去除单氯苯的性能进行了评估。对于入口MCB浓度高达1.069 g m(-3)且EBRT小于94.26 s的情况，滴流床空气生物滤池的去除效率超过了90%。滴流床空气生物滤池采用煤填料构建，接种了从污水处理厂获得的活性污泥混合菌群。针对不同的气体浓度、气体流速和空床停留时间，监测了滴流床空气生物滤池中MCB去除的连续性能。实验进行了75天。获得了平均去除能力为80 g m(-3) h(-1)的降解MCB的滴流床空气生物滤池。还研究了饥饿的影响。在8天的饥饿期后，降解率较低，但在短时间内恢复。采用宏观动力学测定方法，米氏动力学常数K(m)和最大反应速率r(max)分别评估为0.121 g m(-3) s(-1)和7.45 g m(-3)。
