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http://dx.doi.org/10.15681/KSWE.2014.30.5.559

Solid Reduction and Methane Production of Food Waste Leachate using Thermal Solubilization  

Choi, Jung Su (Department of Environmental Energy Engineering, Graduate School Kyonggi University)
Kim, Hyun Gu (Department of Environmental Energy Engineering, Graduate School Kyonggi University)
Joo, Hyun Jong (Department of Environmental Energy Engineering, Kyonggi University)
Publication Information
Journal of Korean Society on Water Environment / v.30, no.5, 2014 , pp. 559-567 More about this Journal
Abstract
Since the ocean dumping of organic wastes is prohibited under the London Convention, the need for land treatment of food waste leachate (FWL) has significantly been growing in recent years. This study was conducted to use thermal solubilization to turn FWL into a form that can easily be degraded during the anaerobic digestion process, thereby reducing the percentage of solids and increasing the production of methane. To derive the optimal operating conditions of thermal solubilization, a laboratory-scale reactor was built and operated. The optimal reaction temperature and time turned out to be $190^{\circ}C$ and 90 min, respectively. The BMP test showed a methane production of 465 mL $CH_4/g$ $COD_{Cr}$ and a biodegradation rate of 90.1%. The production of methane rose by about 15%, compared with no the application of thermal solubilization. To reduce the solid content of FWL and improve the methane production, therefore, it may be helpful to apply thermal solubilization to pre-treatment facilities for anaerobic digestion.
Keywords
Food waste leachate; Methane production; Solid reduction; Thermal solubilization;
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Times Cited By KSCI : 2  (Citation Analysis)
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