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Evaluation of the Economic Efficiency of Composting and Liquefying Processes of Swine Waste

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  • Yoon, Youngman

Abstract

To evaluate the economical efficiency of composting and liquefying processes of pig waste biomass, pig slurry recycling facilities were classified into with four types and the operating cost of each facility type was evaluated using technical data. The type I facility adopted both composting and liquefying processes after solid-liquid separation. The type II and III facilities adopted only the composting process and the liquefying process without the solid-liquid separation, respectively. And the type IV facility adopted the SCB(Slurry Composting Bio-filtration) process. Having taken into account slurry treatment income, organic fertilizer sale and the effect of chemical fertilizer substitution, the type I, III and IV facilities showed profits of 9,222, 11,739, 10192 won/m3, respectively. And the type II facility incurred a deficit of 1,776 won/m3.

Suggested Citation

  • Yoon, Youngman, 2009. "Evaluation of the Economic Efficiency of Composting and Liquefying Processes of Swine Waste," Journal of Rural Development/Nongchon-Gyeongje, Korea Rural Economic Institute, vol. 31(6), January.
    • Handle: RePEc:ags:jordng:330386
    DOI: 10.22004/ag.econ.330386
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    Keywords

    Livestock Production/Industries;

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