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Environmental Engineering Research 2008;13(2): 93-97. DOI: https://doi.org/10.4491/eer.2008.13.2.093
Predicting Methane Production Potential of Anaerobic Co-digestion of Swine Manure and Food Waste
JoungDu Shin1, SungSu Han1, Ki-Cheol Eom1, Shihwu Sung2, SangWon Park2, and Hyunook Kim3
1Department of Environmental Ecology, Agro-Environmental Division, National Institute of Agricultural Science and Technology, RDA, Republic of Korea
2Department of Civil, Concentration and Environmental Engineering, Ames, Iowa State University, USA
3Department of Environmental Engineering, University of Seoul, Republic of Korea
Corresponding Author: JoungDu Shin ,Tel: +82-31-290-0229, Fax: +82-31-290-0206, Email: jdshin@rda.go.kr
Received: February 7, 2008;  Accepted: June 4, 2008.
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ABSTRACT
Anaerobic co-digestion of swine manure and food waste for biogas production was performed in serum bottles at 2% volatile solids(VS) concentration and various mixing ratios of two substrates(swine manure: food waste = 100 : 0 ~ 0 : 100). Through kinetic mode of surface methodology, the methane production was fitted to a Gompertz equation. The specific methane production potential of swine manure alone was lower than that of food waste. However, maximum methane production potential increased up to 1.09-1.22% as food waste composition increased up to the 80%. The maximum methane production value of food waste was 544.52 mL/g VS. It was observed that the maximum methane production potential of 601.86 mL/g VS was found at the mixing ratio of 40:60.
Keywords: Anaerobic co-digestion | Gompertz equation | Swine manure | Food waste | Methane production
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