TY - JOUR
T1 - Impact of interchanging VOCs on the performance of trickle bed air biofilter
AU - Kim, Daekeun
AU - Cai, Zhangli
AU - Sorial, George A.
PY - 2005/10/20
Y1 - 2005/10/20
N2 - Trickle bed air biofilters (TBABs) were evaluated under conditions of an interchange of the feed volatile organic compounds (VOCs). Two aromatic compounds (toluene and styrene) and two oxygenated compounds (methyl ethyl ketone and methyl isobutyl ketone) were interchanged as single solutes. The results obtained revealed that the biofilter provided high removal efficiency within the critical loading, which was previously defined in the non-interchanging VOC-fed biofilters. The biofilter recovered easily to the 99% removal after interchanging to oxygenated compounds, regardless of the immediately preceding compound fed to each biofilter, but for aromatic compounds, a longer reacclimation period was required. The biofilter response after interchange of feed VOCs depended on the physicochemical property of feed VOCs as well as the biomass retained in the biofilter prior to interchanging VOC. Using high EBRT at the critical loading (which corresponds to high inlet concentration), problems related to oxygen limitation within the biofilm may have appeared. It was noticed that a smaller ratio of COD/N and a larger ratio of CO2/COD were encountered after an interchange of the feed VOCs.
AB - Trickle bed air biofilters (TBABs) were evaluated under conditions of an interchange of the feed volatile organic compounds (VOCs). Two aromatic compounds (toluene and styrene) and two oxygenated compounds (methyl ethyl ketone and methyl isobutyl ketone) were interchanged as single solutes. The results obtained revealed that the biofilter provided high removal efficiency within the critical loading, which was previously defined in the non-interchanging VOC-fed biofilters. The biofilter recovered easily to the 99% removal after interchanging to oxygenated compounds, regardless of the immediately preceding compound fed to each biofilter, but for aromatic compounds, a longer reacclimation period was required. The biofilter response after interchange of feed VOCs depended on the physicochemical property of feed VOCs as well as the biomass retained in the biofilter prior to interchanging VOC. Using high EBRT at the critical loading (which corresponds to high inlet concentration), problems related to oxygen limitation within the biofilm may have appeared. It was noticed that a smaller ratio of COD/N and a larger ratio of CO2/COD were encountered after an interchange of the feed VOCs.
KW - Empty bed retention time
KW - Interchanging VOC
KW - Reacclimation
KW - Trickle bed air biofilter
UR - http://www.scopus.com/inward/record.url?scp=27144522006&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2005.04.004
DO - 10.1016/j.cej.2005.04.004
M3 - Article
AN - SCOPUS:27144522006
SN - 1385-8947
VL - 113
SP - 153
EP - 160
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
IS - 2-3
ER -