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http://dx.doi.org/10.11001/jksww.2015.29.1.057

Hydrothermal carbonization of sewage sludge for solid recovered fuel and energy recovery  

Kim, Daegi (Department of Civil and Environmental System Engineering, Konkuk University)
Lee, Kwanyong (Department of Civil and Environmental System Engineering, Konkuk University)
Park, Kiyoung (Department of Civil and Environmental System Engineering, Konkuk University)
Publication Information
Journal of Korean Society of Water and Wastewater / v.29, no.1, 2015 , pp. 57-63 More about this Journal
Abstract
Recently, Korea's municipal wastewater treatment plants generated amount of wastewater sludge per day. However, ocean dumping of sewage sludge has been prohibited since 2012 by the London dumping convention and protocol and thus removal or treatment of wastewater sludge from field sites is an important issue on the ground site. The hydrothermal carbonization is one of attractive thermo-chemical method to upgrade sewage sludge to produce solid fuel with benefit method from the use of no chemical catalytic. Hydrothermal carbonization improved that the upgrading fuel properties and increased materials and energy recovery, which is conducted at temperatures ranging from 200 to $350^{\circ}C$ with a reaction time of 30 min. Hydrothermal carbonization increased the heating value though the increase of the carbon and fixed carbon content of solid fuel due to dehydration and decarboxylation reaction. Therefore, after the hydrothermal carbonization, the H/C and O/C ratios decreased because of the chemical conversion. Energy retention efficiency suggest that the optimum temperature of hydrothermal carbonization to produce more energy-rich solid fuel is approximately $200^{\circ}C$.
Keywords
Sewage sludge; Hydrothermal carbonization; Solid recovered fuel; Energy recovery; Renewable energy;
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Times Cited By KSCI : 1  (Citation Analysis)
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