Biogas Potential of Food Waste-Recycling Wastewater after Oil-Water Separation

초록

This study explores the potential of food waste-recycling wastewater (FRW) for biogas production, emphasizing oil-water separation before anaerobic digestion. Three FRW samples were analyzed: non-treated (FRW), water-oil separated (FRW_sep), and mixed with domestic sewage (FRW_mix). Physicochemical characterization showed a 26% reduction in crude lipid content after oil-water separation. The biochemical methane potential (BMP) tests revealed similar methane yields for FRW_sep and FRW_mix compared to non-treated FRW. Microbial analysis identified Firmicutes and Methanoculleus as active populations. Energy balance suggests that combining biodiesel and biogas production can enhance net energy recovery. This research indicates that oil-water separation in FRW treatment can optimize anaerobic digestion, contributing to sustainable waste management and renewable energy generation.

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