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http://dx.doi.org/10.5855/ENERGY.2014.23.3.125

Characteristics of Anaerobic Acid Fermentation with Food waste leachate by Reactor Type of Retention Time for Landfill Site Injection  

Moon, Kwangseok (Graduate School of energy and Environment, Seoul National University of Technology & Science)
Kim, Jaehyung (Graduate School of energy and Environment, Seoul National University of Technology & Science)
Koo, Hyemin (Graduate School of energy and Environment, Seoul National University of Technology & Science)
Lim, Junhyuk (Graduate School of energy and Environment, Seoul National University of Technology & Science)
Kim, Nakjoo (Graduate School of energy and Environment, Seoul National University of Technology & Science)
Chang, Wonseok (District Heating Technology Research Institute, Korea District Heating Corp.)
Pak, Daewon (Graduate School of energy and Environment, Seoul National University of Technology & Science)
Publication Information
Journal of Energy Engineering / v.23, no.3, 2014 , pp. 125-131 More about this Journal
Abstract
In order to increase landfill gas (LFG) production with food waste leachate, this study was confirmed to be acidogenetic conditions for landfill site injection. Thereby, it was conducted for acidogenetic treatments to determine the decrease in viscosity and VFA production. After acidogenesis treatments, solubility of food waste leachate increased approximately 15%, and as a result, UASB and CSTR were similar by reactor type using the change of retention time. Based on the result of the change in viscosity by reactor type, efficiency of UASB showed approximately 11.38% of higher decrease in viscosity as $76.95{\pm}3.27%$ vs. CSTR. Also, VFA production showed the higher increase of 2.01 times (UASB) and 1.76 times (CSTR) respectively at the point of increasing retention time from 3 to 5 days. From the above results, efficiency of UASB in a reactor was relatively higher because large molecular lead to longer retention time than small molecular due to having screen effect in the fixed media.
Keywords
Food waste leachate; Acidogenesis; Methane; Pre-treatment; Landfill gas;
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