Sang, BI Yoo, ES Kim, BJ Rittmann, BE 2024-01-21T09:01:57Z 2024-01-21T09:01:57Z 2022-01-10 2003-05 0175-7598 https://pubs.kist.re.kr/handle/201004/138604 We conducted a series of steady-state and short-term experiments on a three-phase circulating-bed biofilm reactor (CBBR) for removing toluene from gas streams. The goal was to investigate the effect of macroporous-carrier size (1-mm cubes versus 4-mm cubes) on CBBR performance over a wide range of oxygen loading. We hypothesized that the smaller biomass accumulation with I-mm carriers would minimize dissolved-oxygen (DO) limitation and improve toluene removal, particularly when the DO loading is constrained. The CBBR with 1-mm carriers overcame the performance limitation observed with the CBBR with 4-mm carriers: i.e., oxygen depletion inside the biofilm. The 1-mm carriers consistently gave superior removal of toluene and chemical oxygen-demand, and the advantage was greatest for the lowest oxygen loading and the greatest toluene loading. The 1-mm carriers achieved superior performance because they minimized the negative effects of oxygen depletion, while continuing to provide protection from excess biomass detachment and inhibition from toluene. English SPRINGER-VERLAG FLUIDIZED-BED TRICKLING FILTER AIR BIOFILTRATION DEGRADATION BACTERIA The trade-offs and effect of carrier size and oxygen-loading on gaseous toluene removal performance of a three-phase circulating-bed biofilm reactor Article 10.1007/s00253-002-1216-0 1 APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, v.61, no.3, pp.214 - 219 APPLIED MICROBIOLOGY AND BIOTECHNOLOGY 61 3 214 219 scie scopus 000183198900005 2-s2.0-0038026198 Biotechnology & Applied Microbiology Biotechnology & Applied Microbiology Article FLUIDIZED-BED TRICKLING FILTER AIR BIOFILTRATION DEGRADATION BACTERIA VOC CBBR biodegradation oxygen-loading