Journal of Korea Society of Waste Management (한국폐기물자원순환학회지)

Korea Society of Waste Management (한국폐기물자원순환학회)
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Anaerobic Ultimate Biodegradability and Multiple Decay Rates of Dairy Cow Manure

젖소분뇨의 최종생분해도와 다중분해속도 특성평가

  • Kang, Ho (Department of Environmental Engineering, Chungnam National University) ;
  • Jeong, Kwang-Hwa (National Institute of Animal Science, R.D.A) ;
  • Jeong, Ji-Hyun (Department of Environmental Engineering, Chungnam National University) ;
  • Kim, Sun-Woo (Department of Environmental Engineering, Chungnam National University) ;
  • Ahn, Hee-Kwon (Department of Animal Biosystems Science, Chungnam National University)
  • 강호 (충남대학교 환경공학과) ;
  • 정광화 (국립축산과학원) ;
  • 정지현 (충남대학교 환경공학과) ;
  • 김선우 (충남대학교 환경공학과) ;
  • 안희권 (충남대학교 동물바이오시스템과학과)
  • Received : 2014.09.15
  • Accepted : 2014.10.13
  • Published : 2014.12.31
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Abstract

Anaerobic mesophilic batch tests of dairy cow manure, dairy cow manure/saw dust mixture and dairy cow manure/rice hull mixtures collected from bedded pack barn were carried out to evaluate their ultimate biodegradability and two distinctive decay rates ($k_1$ and $k_2$) with their corresponding degradable substrate fractions ($S_1$ and $S_2$). Each 3 liter batch reactor was operated for more than 100 days at substrate to inoculum ratio (S/I) of 1.0 as an initial total volatile solids (TVS) mass basis. Ultimate biodegradabilities of 37 ~ 46% for dairy cow manure, 32 ~ 40% for dairy manure/saw dust mixture and 31 ~ 38% for dairy cow manure/rice hull mixture were obtained respectively. The readily biodegradable fraction of 90% ($S_1$) of dairy manure BVS ($S_0$) degraded with in the initial 29 days with arange of $k_1$ of $0.074day^{-1}$, where as the rest slowly biodegradable fraction ($S_2$) of BVS degraded for more than 100 days with the long term batch reaction rate of $0.004day^{-1}$. For the dairy manure/saw dust mixture and dairy manure/rice hull mixture, their readily biodegradable portions ($S_1$) appeared 71% and 76%, which degrades with $k_1$ of $0.053day^{-1}$ and $0.047day^{-1}$ for an initial 30 days and 38 days, respectively. Their corresponding long term batch reaction rates were $0.03day^{-1}$.

Keywords

Acknowledgement

Grant : 최대 바이오 가스 생산을 위한 젖소분뇨 반건식 SCFMR 혐기성소화공정개발

Supported by : 농촌진흥청

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Cited by

  1. Solid-State Anaerobic Digestion of Dairy Manure from a Sawdust-Bedded Pack Barn: Moisture Responses vol.11, pp.3, 2014, https://doi.org/10.3390/en11030484