Sang, Byoung-In Yoo, Eui-Sun Kim, Byung J. Rittmann, Bruce E. 2024-01-20T23:05:07Z 2024-01-20T23:05:07Z 2021-09-03 2008-06 1017-7825 https://pubs.kist.re.kr/handle/201004/133461 A series of steady-state and short-term experiments on a three-phase circulating-bed biofilm reactor (CBBR) for removing toluene from gas streams were conducted to investigate the effect of macroporous-carrier size (1-mm cubes versus 4-mm cubes, which have the same total surface area) on CBBR performance. Experimental conditions were identical, except for the carrier size. The CBBR with 1-mm carriers (the 1-mm CBBR) overcame the performance limitation observed with the CBBR with 4-mm carriers (the 4-mm CBBR): oxygen depletion inside the biofilm. The 1-mm CBBR consistently had the superior removal efficiencies of toluene and COD, higher than 93% for all, and the advantage was greatest for the highest toluene loading, 0.12 M/m(2)-day. The 1-mm carriers achieved superior performance by minimizing the negative effects of oxygen depletion, because they had 4.7 to 6.8 times thinner biofilm depths. The 1-mm carriers continued to provide protection from excess biomass detachment and inhibition from toluene. Finally, the 1-mm CBBR achieved volumetric removal capacities up to 300 times greater than demonstrated by other biofilters treating toluene and related volatile hydrocarbons. English KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGY BIOTRICKLING FILTERS BIOFILTRATION ELIMINATION BENZENE VAPOR Effect of carrier size on the performance of a three-phase circulating-bed biofilm reactor for removing toluene in gas stream Article 1 JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY, v.18, no.6, pp.1121 - 1129 JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY 18 6 1121 1129 scie scopus kci 000257212000019 2-s2.0-53149136765 Biotechnology & Applied Microbiology Microbiology Biotechnology & Applied Microbiology Microbiology Article BIOTRICKLING FILTERS BIOFILTRATION ELIMINATION BENZENE VAPOR biofilm circulating-bed toluene carrier size inhibition oxygen depletion