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Liquid-Composting Conditions of By-product Obtained from Degradation of Animal Carcass for Agriculture Recycling

폐가축사체의 농업적 재활용을 위한 가축사체 액상부산물의 액비화 조건 구명

  • Seo, Young-Jin (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Seo, Dong-Cheol (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Kang, Se-Won (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Lee, Sang-Gyu (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Park, Ju-Wang (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Choi, Ik-Won (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Sung, Hwan-Hoo (National Institute of Animal Science, Rural Development Administration) ;
  • Kang, Seog-Jin (National Institute of Animal Science, Rural Development Administration) ;
  • Cho, Ju-Sik (Department of Bio-Environmental Sciences, Sunchon National University)
  • 서영진 (순천대학교 생물환경학과) ;
  • 서동철 (순천대학교 생물환경학과) ;
  • 강세원 (순천대학교 생물환경학과) ;
  • 이상규 (순천대학교 생물환경학과) ;
  • 박주왕 (순천대학교 생물환경학과) ;
  • 최익원 (순천대학교 생물환경학과) ;
  • 성환후 (농촌진흥청 국립축산과학원) ;
  • 강석진 (농촌진흥청 국립축산과학원) ;
  • 조주식 (순천대학교 생물환경학과)
  • Received : 2013.10.01
  • Accepted : 2013.12.16
  • Published : 2013.12.31

Abstract

BACKGROUND: Globally, concern about emerging infectious diseases of livestock is growing. For the disposal of the animal carcass, it is necessary to recycle the carcass into an agriculturally usable product. The objective of this study was to investigate the composting conditions of liquid by-product obtained from degradation of animal carcass. METHODS AND RESULTS: Optimum conditions of liquid fertilizer were investigated using different microorganisms, pHs, and volumes of microorganisms (Lactobacillus rhamnosus+Pichia deserticola). Based on the results from the optimum conditions, compost maturity and quality of liquid fertilizer were evaluated for 112 days. The compost maturity of liquid fertilizer were higher in the order of LP(Lactobacillus rhamnosus + Pichia deserticola) > BC(Bacillus cereus) > BS(Bacillus subtilis). The optimum condition under different volumes of LP was injection of 0.5 mL/100 mL. The compost maturity under different pHs were higher in the order of pH 7 > $$5{\geq_-}9{\frac{._-}{.}}11$$. The liquid by-product at 56 days after composting was completely decomposed. The concentrations of T-N, T-P and $K_2O$ in liquid fertilizer at 56 days were 0.94, 0.17 and 3.78%, respectively, and the sum of those concentrations was 4.89%. CONCLUSION(S): Liquid fertilizer of by-product using pig carcass was decomposed with optimum conditions(LP, pH 7, injection of 0.5 mL/100 mL) in 56 days after composting, and was suitable for official standard of commercial fertilizer.

Keywords

Animal carcass;By-product;Compost maturity;Liquid fertilizer

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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