TY - JOUR ID - 384 TI - A performance Study of Simultaneous Microbial Removal of NO and SO2 in a Biotrickling-Filter Under Anaerobic Condition JO - International Journal of Environmental Research JA - IJER LA - en SN - 1735-6865 AU - Han, Y. AU - Zhang, W. AU - Xu, J. AD - School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China Y1 - 2011 PY - 2011 VL - 5 IS - 3 SP - 779 EP - 786 KW - Simultaneous removal of NO and SO2 KW - Coculture KW - Anaerobic denitrifying bacteria KW - Sulfate reducing bacteria KW - Biotrickling-filter DO - 10.22059/ijer.2011.384 N2 - Behaviors of simultaneous removal of NO and SO2 using the coculture of anaerobic denitrifying bacteria and sulfate reducing bacteria were investigated in a bench-scale biotrickling-filter. Approximate 20 days were required to use the landfill leachate as the microbial seed to develop the biofilm on the surface of packing material. When the combined NO/SO2 removal biotrickling-filter was operated at an empty bed residence time (EBRT) of 76 s and the NO and SO2 feed concentrations of 2 and 2 g/m3 respectively, the SO2 removal efficiency was always above 95%, while NO removal exhibited an evident periodicity of 5-6 days for the initial 60 days after the attachment phase and then a steady-state NO-removal efficiency of around 90% was obtained after 130 days of continuous operation. Contrast experimental results indicated that the coculture in the combined NO/SO2 removal biotrickling-filter showed a higher resistance to shock NO-loadings and a better tolerance of starvation than the single denitrifying bacteria in the NO removal biotrickling-filter. UR - https://ijer.ut.ac.ir/article_384.html L1 - https://ijer.ut.ac.ir/article_384_92b1161aed677e9839ac8fb32689ae56.pdf ER -