Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Fermentative Hydrogen Production from the Pretreated Food-Processing Waste and Sewage Sludge using Chemical/Ultra-Sonication

두부제조폐기물과 하수슬러지의 화학/초음파 전처리에 의한 가용화 및 혐기발효 수소생산

  • Kim, Mi-Sun (Bioenergy Research Center, Korea Institue of Energy Research) ;
  • Lee, Dong-Yeol (GS Engineering and constrnction Environmental Technology Team) ;
  • Kim, Dong-Hun (Bioenergy Research Center, Korea Institue of Energy Research) ;
  • Kim, Ok-Sun (Bioenergy Research Center, Korea Institue of Energy Research) ;
  • Lim, So-Yung (Bioenergy Research Center, Korea Institue of Energy Research)
  • 김미선 (한국에너지기술연구원 바이오에너지 연구센터) ;
  • 이동렬 (GS 건설 환경기술팀) ;
  • 김동훈 (한국에너지기술연구원 바이오에너지 연구센터) ;
  • 김옥선 (한국에너지기술연구원 바이오에너지 연구센터) ;
  • 임소영 (한국에너지기술연구원 바이오에너지 연구센터)
  • Received : 2010.09.30
  • Accepted : 2010.12.17
  • Published : 2010.12.31
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Abstract

Acid and alkali pretreatments were applied to tofu processing waste (TPW) to increase the solubility of ingredients in TPW. Pretreatment at 1.0% of HCl and 2.5% of NaOH condition resulted in the increase of SCOD concentration from 3.2 g COD/L to 27 g COD/L and 33 g COD/L, respectively. The acid and alkali-pretreated TPW was studied for its fermentative $H_2$ production capacity in batch mode using a thermophillic mixed culture. Alkali pretreatment on presence of 2.5% NaOH exhibited more soluble portion released compared to acid pretreatment using HCl, however the $H_2$ production from acid pretreated TPW was better than alkali-pretreated TPW probably due to the sodium inhibition on microbial activity. In addition, sewage sludge was externally added to the acid-pretreated (1.0% HCl) TPW by 20% (on volume basis). Average H2 production rate was increased from 31 to 78 ml/L-broth/hr, and it was attributed to the high buffer capacity and abundant nutrients especially divalent cation in sewage sludge.

Keywords

References

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