Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Biochemical Methane Potential Analysis for Anaerobic Digestion of Giant Miscanthus (Miscanthus sacchariflorus)

거대억새(Miscanthus sacchariflorus)의 혐기소화를 위한 메탄생산 퍼텐셜 분석

  • Yoo, Jung-Suk (Biogas Research Center, Hankyong National University) ;
  • Kim, Chang-Hyun (Department of Animal Life & Environmental Science, College of Agriculture and Life Science, Hankyong National University) ;
  • Yoon, Young-Man (Biogas Research Center, Hankyong National University)
  • 유정숙 (한경대학교 바이오가스연구센터) ;
  • 김창현 (한경대학교 농업생명과학대학 동물생명환경과학과) ;
  • 윤영만 (한경대학교 바이오가스연구센터)
  • Received : 2017.02.05
  • Accepted : 2017.03.14
  • Published : 2017.03.31
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Abstract

BACKGROUND: This study was carried out to assess a biochemical methane potential of giant miscanthus (Miscanthus sacchariflorus) which was a promising candidate energy crop due to a high biomass productivity, in order to utilize as a feedstock for the biogas production. METHODSANDRESULTS: Giant miscanthus was sampled the elapsing drying time of 6 months after harvesting. TS (Total Solid) and VS (Volatile Solid) contents were 94.7 and 90.8%. And CP (Crude Protein), EE (Ether Extracts), and CF (Crude Fiber) contents of giant miscanthus were 1.4, 0.46, and 46.12%, respectively. In the organic composition of giant miscanthus, the NDF (Neutral Detergent Fiber) representing cellulose, lignin, and hemicellulose contents showed 86.88%, and the ADF (Acid Detergent Fiber) representing cellulose and lignin contents was 62.91%. Elemental composition of giant miscanthus showed 47.75%, 6.44%, 41.00%, and 0.28% for C, H, O, and N, respectively, and then, theoretical methane potential was obtained to $0.502Nm^3kg^{-1}-VS_{added}$. Biochemical methane potential was assessed as the range of $0.154{\sim}0.241Nm^3kg^{-1}-VS_{added}$ resulting the lower organic biodegradability of 30.7~48.0%. CONCLUSION: Therefore the development of pretreatment technology of the giant miscanthus was needed for the improvement of anaerobic digestability.

Keywords

Acknowledgement

Supported by : Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry and Fisheries (IPET)

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