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Acidogenesis of Lipids-Containing Wastewater in Anaerobic Sequencing Batch Reactor  

Kim, Sang-Hyoun (Green Process R&D Department, Korea Institute of Industrial Tehcnology)
Shin, Hang-Sik (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
Publication Information
Journal of Korean Society of Environmental Engineers / v.31, no.12, 2009 , pp. 1075-1080 More about this Journal
Abstract
The partial lipid degradation with the saturation of double-bond at the acidogenesis stage is known to help subsequent methanogenesis during anaerobic digestion. Acidogenic reactions in an anaerobic sequencing batch reactor (ASBR) and a continuously stirred tank reactor (CSTR) were carried out to compare their performances. A mixture of two unsaturated (oleate and linoleate) and two saturated (palmitate and stearate) long-chain fatty acids (LCFAs) was used as a model substrate. Biomass retention in the ASBR contributed to the enhanced performance at hydraulic retention time (HRT) below 15 hr. Biomass retention in the ASBR contributed to the enhanced performance compared to CSTR even at shorter HRT. ASBR would be a proper reactor configuration for the acidogenesis of lipid-containing wastewater.
Keywords
Acidogenesis; ASBR; Lipid degradation; Double-bond saturation;
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