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2006 Vol.11, Issue 4 Preview Page
Performance of a Hellow Fiber Membrane Diffuser for the Biological Removal of Gaseous BTX

Diffuer 형태의 중공사막 생물반응기를 이용한 기체상 BTX 제거

손영규;김지형;송지현;

Son, Young-Gyu;Khim, Jee-Hyeong;Song, Ji-Hyeon;

31 August 2006. pp. 25 ~ 32
PDF Citation
Abstract
In this study, a novel bioreactor system using a diffuser type hollow fiber membranes (hollow fiber membrane diffuser, HFMD) was applied to investigate the feasibility and biodegradation capacity for the treatment of a gaseous mixture consisting of benzene, toluene and p-xylene(BTX). First, A mixed culture pre-acclimated to toluene effectively biodegraded the BTX mixture at an overall removal efficiency of approximately 70% for a 20-day operational period. It was found that the biodegradation of toluene was slightly inhibited because of the presence of benzene and p-xylene. Second, the elimination capacity (EC) of total BTX increased up to 360 $g/m^3/hr$, which was substantially higher than maximum ECs for BTEX reported in the biofiltration literature. Consequently, the hollow fiber membrane diffuser was considered as an alternative method over other conventional VOC-treating technologies such as biofilters.
Keywords
Hollow fiber membrane;Bioreactors;BTX;Diffuser;Elimination capacity;
본 연구는 산기관(diffuser) 형태로 운전되는 중공사막 생물반응기(Hollow Fiber Membrane Diffuser) 시스템을 복합오염물질(benzene, toluene, p-xylene, BTX)처리에 적용해 보고, 생물반응기에 의한 각 물질의 생분해 특성을 평가하기 위하여 수행되었다. 우선 toluene을 단일오염물질로 적용한 예비 실험기간 동안에 75%수준의 안정적인 처리 효율을 확인할 수 있었다. 이후 BTX 복합오염물질을 적용한 본 실험기간 동안에도 별도의 적응기간 및 악영향 없이 70%수준의 처리효율을 얻어낼 수 있었다. 이를 통하여 toluene분해 미생물의 benzene, p-xylene의 분해 능력을 확인하였으며, toluene의 경우 복합오염물질 적용 시 다른 두 물질에 의해 소폭의 분해 저해가 발생하는 것을 알 수 있었다. 또한 분해능 실험에서 측정한 생물반응기의 BTX 분해능은 약 360 $g/m^3/hr$이었으며, 이는 기존의 생물여과공법에 제시된 최대분해능보다 높은 우수한 분해능이었다. 따라서 산기관 형태의 중공사막 생물반응기는 복합오염물질 처리에도 안정적인 운전특성을 나타내었으며, 기존의 VOCs 저감기술을 대체할 수 있는 친환경적인 기술이라고 판단된다.
키워드
중공사막;생물반응기;산기관;분해능;
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Information
  • Publisher :The Korean Society of Soil and Groundwater Environment
  • Publisher(Ko) :한국지하수토양환경학회
  • Journal Title :Journal of Soil and Groundwater Environment
  • Journal Title(Ko) :지하수토양환경
  • Volume : 11
  • No :4
  • Pages :25 ~ 32
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