Effect of carrier size on the performance of a three-phase circulating-bed biofilm reactor for removing toluene in gas stream
- Authors
- Sang, Byoung-In; Yoo, Eui-Sun; Kim, Byung J.; Rittmann, Bruce E.
- Issue Date
- 2008-06
- Publisher
- KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGY
- Citation
- JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY, v.18, no.6, pp.1121 - 1129
- Abstract
- 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.
- Keywords
- BIOTRICKLING FILTERS; BIOFILTRATION; ELIMINATION; BENZENE; VAPOR; BIOTRICKLING FILTERS; BIOFILTRATION; ELIMINATION; BENZENE; VAPOR; biofilm; circulating-bed; toluene; carrier size; inhibition; oxygen depletion
- ISSN
- 1017-7825
- URI
- https://pubs.kist.re.kr/handle/201004/133461
- Appears in Collections:
- KIST Article > 2008
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.