White Rot Fungi Biofilter Treating Waste Gas Containing Chlorobenzene
白腐真菌生物过滤塔处理氯苯气体的研究

A novel gas-solid phase bioreactor, using bamboo as support material, inoculated with white-rot fungi Phanerochaete chrysosporium was established to treat waste gas containing chlorobenzene. The performance of P. chrysosporium bioreactor was examined under different conditions. Results in this study shown that the maximum removal efficiency of nearly 80 % (average removal efficiency of 50 %) could be reached under the condition of chlorobenzene inlet concentration of 200~1 500 mg/m3 and the Empty Bed Retention Time (EBRT) of 122 s. While the maximum chlorobenzene removal rate of 94 g /(m3?h) average removal efficiency of 60 g /(m3?h)] had been achieved within chlorobenzene inlet concentration of 500~1 500 mg/m3 and at the flow rate of 0.5 m3/h. Furthermore, the removal rates of the bioreactor at different flow rates were also examined, suggesting that the response of removal rate to the change of inlet loading was dependent on the flow rate. Lower flow rate could promote the extent of removal rate enhancement compared to the higher flow rate. Moreover, the profile of chlorobenzene concentration along the height of the biofilter showed a nonlinear decrease trend.