caa a22 4500 605497796 CHVBK 20210128105157.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00253-014-6248-8 doi (NATIONALLICENCE)springer-10.1007/s00253-014-6248-8 Effect of continuous ozone injection on performance and biomass accumulation of biofilters treating gaseous toluene [Elektronische Daten] [Jinying Xi, Prakit Saingam, Feng Gu, Hong-Ying Hu, Xuefei Zhao] Biofilters treating high-concentration gaseous volatile organic compounds (VOC) can be subject to bed clogging induced by excess biomass accumulation. In this study, O3 was continuously injected into biofilters to control biomass. Its effects on the performance of the biofilters and on biomass accumulation were investigated. Four identical biofilters designed to treat gaseous toluene were operated for 70days, and three of them were continuously injected with O3 at different concentrations (from 80 to 320mg/m3). The results showed that continuous O3 injection could effectively keep the bed pressure drop stable and had no adverse effect on toluene removal when O3 concentrations were 180-220mg/m3. The maximum toluene elimination capacity of the four biofilters was 140g-toluene/m3/h, and the bed pressure drop of the biofilter fed with 180-220mg/m3 O3 remained below 3 mmH2O/m throughout the operation period. The biomass accumulation rates of the three biofilters with O3 at 80-320mg/m3 were lowered by 0.15-0.25g/L/day compared with the biofilter without O3. The decreases in biomass accumulation resulted in higher void fractions of the filter beds with O3 injection. Carbon balance analysis indicated that CO2 production had increased while biomass accumulation and leachate waste production decreased in response to O3 injection. Based on the experimental results, it was concluded here that continuous O3 injection can reduce increases in bed pressure effectively, preserve VOC removal capacity, and prevent production of extra leachate waste. Springer-Verlag Berlin Heidelberg, 2014 Ozone nationallicence Biofilter nationallicence Biomass control nationallicence VOC nationallicence Bed clogging nationallicence Xi Jinying Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, 100084, Beijing, People's Republic of China aut Saingam Prakit Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, 100084, Beijing, People's Republic of China aut Gu Feng Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, 100084, Beijing, People's Republic of China aut Hu Hong-Ying Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, 100084, Beijing, People's Republic of China aut Zhao Xuefei Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, 100084, Beijing, People's Republic of China aut Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/1(2015-01-01), 33-42 0175-7598 99:1<33 2015 99 253 https://doi.org/10.1007/s00253-014-6248-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00253-014-6248-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xi Jinying Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, 100084, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Saingam Prakit Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, 100084, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Gu Feng Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, 100084, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Hu Hong-Ying Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, 100084, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Zhao Xuefei Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, 100084, Beijing, People's Republic of China aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/1(2015-01-01), 33-42 0175-7598 99:1<33 2015 99 253 SWISSBIB 560478739