Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Biological Hydrogen Production from Mixed Waste in a Polyurethane Foam-sequencing Batch Reactor

혼합폐기물 및 폴리우레탄 담체를 충전한 연속회분식공정을 이용한 생물학적 수소생산

  • Lee, Jung-Yeol (Global Top 5 Research Program, Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Wee, Daehyun (Global Top 5 Research Program, Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Cho, Kyung-Suk (Global Top 5 Research Program, Department of Environmental Science and Engineering, Ewha Womans University)
  • 이정열 (Global Top 5 Research Program, 이화여자대학교 환경공학과) ;
  • 위대현 (Global Top 5 Research Program, 이화여자대학교 환경공학과) ;
  • 조경숙 (Global Top 5 Research Program, 이화여자대학교 환경공학과)
  • Received : 2014.04.01
  • Accepted : 2014.07.14
  • Published : 2014.09.28
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Abstract

This study investigated the effects of polyurethane foam on continuous hydrogen production from mixed wastes. Molasses was co-fermented with non-pretreated sewage sludge in a sequencing batch reactor. The results indicated that the addition of polyurethane foams as a microbial carrier in the reactor mitigated biomass loss at HRT 12 h, while most of the biomass was washed out during the operation period with no carrier. There was a stable hydrogen production rate of $0.4L-H_2/l/d$ in the carrier-sequencing batch reactor. Suspended biomass in the carrier-reactor indicated it possessed the highest specific hydrogen production rate ($241{\pm}4ml-H_2/g\;VSS/d$) when compared to that of biomass on the surface ($133{\pm}10ml-H_2/g\;VSS/d$) or inner carrier ($95{\pm}14ml-H_2/g\;VSS/d$).

폴리우레탄 담체가 혼합폐기물을 이용한 연속식수소생산에 미치는 영향을 조사하였다. 당밀폐수와 하수슬러지를 혼합하여 연속 회분식 공정에서 발효시켰다. 담체를 넣지 않고 12 h의 수리학적 체류시간으로 운전하였을 때, 대부분의 바이오매스가 외부로 유실된 반면, 담체를 반응조에 투입하였을 때에는 미생물 유실이 현저히 저감하였다. 또한, 담체를 이용한 경우, 수소생산속도 $0.4L-H_2L^{-1}d^{-1}$로 높게 나타났다. 반응조 내 부유 바이오매스에 의한 비수소생산속도가 $241{\pm}4ml-H_2g-VSS^{-1}d^{-1}$로서 담체 표면 부착바이오매스($133{\pm}10ml-H_2g-VSS^{-1}d^{-1}$) 및 담체 내부 부착 바이오매스에 의한 값($95{\pm}14ml-H_2g-VSS^{-1}d^{-1}$)보다 높게 나타났다.

Keywords

요 약

폴리우레탄 담체가 혼합폐기물을 이용한 연속식수소생산에 미치는 영향을 조사하였다. 당밀폐수와 하수슬러지를 혼합하여 연속 회분식 공정에서 발효시켰다. 담체를 넣지 않고 12 h의 수리학적 체류시간으로 운전하였을 때, 대부분의 바이오매스가 외부로 유실된 반면, 담체를 반응조에 투입하였을 때에는 미생물 유실이 현저히 저감하였다. 또한, 담체를 이용한 경우, 수소생산속도 0.4 L-H2 L−1 d−1로 높게 나타났다. 반응조 내 부유 바이오매스에 의한 비수소생산속도가 241 ± 4 ml-H2 g-VSS−1 d−1로서 담체 표면 부착바이오매스 (133 ± 10 ml-H2 g-VSS−1 d−1) 및 담체 내부 부착 바이오매스에 의한 값(95 ± 14 ml-H2 g-VSS−1 d−1)보다 높게 나타났다.

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