Biodegradation characteristics of organic matters in swine carcasses under different initial operating conditions of simulated anaerobic lysimeter |
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| Authors: | Jung-Kwang Kim Sun-Kee Han Geon-Ha Kim Ji-Tae Kim Chae-Young Lee |
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| Institution: | 1.Department of Civil Engineering, Institute of River Environmental Technology,The University of Suwon,Hwaseong-Si,South Korea;2.Department of Environmental Health,Korea National Open University,Seoul,South Korea;3.Department of Civil and Environmental Engineering,Hannam University,Daejeon,South Korea;4.Department of Environmental and Energy Engineering,Kyonggi University,Suwon-Si,South Korea |
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| Abstract: | This study was aimed to investigate the biodegradation characteristics of organic matters in swine carcasses. The lysimeters were simulated with different initial operating conditions: 30 % volumetric moisture content and no sludge addition for lysimeter A (control), 30 % volumetric moisture content and anaerobic sludge addition for lysimeter B, and 40 % volumetric moisture content and anaerobic sludge addition for lysimeter C. The degradation efficiency (18.4 %) of lysimeter B was higher than that (15.2 %) of lysimeter A due to anaerobic sludge addition. Lysimeter B showed higher CH4 yield (15.6 L/kg VS) and CH4 production rate (0.41 L/kg VS days) compared to lysimeter A by 31 % and 14 %, respectively. In addition, the degradation efficiency improved from 18.4 % (lysimeter B) to 26.3 % (lysimeter C) by increasing volumetric moisture content. The CH4 yield (22.9 L/kg VS) and CH4 production rate (0.68 L/kg VS days) of lysimeter C were higher than those of lysimeter B, respectively. Total organic carbon (TOC) removed in lysimeter C was converted to leachate (20.3 %) and gas (6.0 %), whose values were higher than those of lysimeter A and B. These results demonstrated that the proper control of initial operating conditions could accelerate the anaerobic degradation of organic matters in swine carcasses. |
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