원문정보
초록
영어
The removal of volatile organic compounds (VOCs) from a polluted air stream using a biofiltration system is highly efficiency and has low installation and maintenance costs. Ketone compounds widely used in manufacturing processes are known as one of high-priority toxic VOCs. In this study, removal performance of the biofilter system for the removal of acetone was evaluated to optimize operation conditions. A biofilter system used in this study was packed with glass-type media with 5L of bed volume and inoculated with mixed microorganisms obtained from a sewage treatment plant. The biofilter systems were operated at an empty bed retention time (EBRT) of 15~30s under nitrogen deficient condition where nutrient solution was supplied only
1L every 2 weeks. During more than 2 months operation, maximally, biofilters show that the removal efficiencies were more than 97% at inlet acetone concentration of 110 ~ 720 ppmv，which corresponded to elimination capacity of 31~93 g/m3 h. GC/MS analysis for the detection of byproducts indicated that methanol was detected from outlet stream of biofilter for acetone removal