지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2004.1
- 수록면
- 893 - 901 (9page)
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이 논문의 연구 히스토리 (6)
2005
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A hollow fiber membrane bioreactor(HFMB) has emerged as a treatment technology for the air emission of biodegradable volatile organic compounds(VOCs). The Hollow fiber membrane serves as a support for VOC-degrading microorganisms and provides a large surface area for the VOC and oxygen mass transfer. In this study, a lab-scale HFMB was operated to investigate the feasibility of applying this novel technology for the removal of toluene, the model VOC. At a liquid medium exchange rate of 0.6L/day, the HFMB showed stable long-term performance with high toluene-degrading activities in a range of 2.69～3.18㎍ toluene/mg SS․hr. In addition, the maximum elimination capacity(EC) was found to be 500g/m3․hr that was significantly higher than that reported in the literature. These findings imply that the HFMB be a feasible alternate over conventional packed-bed type biofilters. However, bioreactor performance gradually declined when the HFMB was subjected to a low liquid medium exchange rate, presumably due to the limitation of nutrients necessary for microbial growth and/or the accumulation of toxic byproducts. Also, an increase in pressure drop across the hollow fiber membrane module was observed with the increasing operation time, indicating that biofouling on the membrane surface by microorganisms played a major role on the pressure drop. As a result, more integrated research is required to improve the HFMB performance as well as to minimize the pressure drop across the membrane.
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