Shin, Seung Gu Han, Gyuseong Lee, Joonyeob Cho, Kyungjin Jeon, Eun-Jeong Lee, Changsoo Hwang, Seokhwan 2024-01-20T05:34:22Z 2024-01-20T05:34:22Z 2021-09-05 2015-11 0960-8524 https://pubs.kist.re.kr/handle/201004/124801 A set of experiments was carried out to characterize food waste- recycling wastewater (FRW) and to investigate annual and seasonal variations in composition, which is related to the process operation in different seasons. Year-round samplings (n = 31) showed that FRW contained high chemical oxygen demand (COD; 148.7 +/- 30.5 g/L) with carbohydrate (15.6%), protein (19.9%), lipid (41.6%), ethanol (14.0%), and volatile fatty acids (VFAs; 4.2%) as major constituents. FRW was partly (62%) solubilized, possibly due to partial fermentation of organics including carbohydrate. Biodegradable portions of carbohydrate and protein were estimated from acidogenesis test by first-order kinetics: 72.9 +/- 4.6% and 37.7 +/- 0.3%, respectively. A maximum of 50% of the initial organics were converted to three major VFAs, which were acetate, propionate, and butyrate. The methane potential was estimated as 0.562 L CH4/g VSfeed, accounting for 90.0% of the theoretical maximum estimated by elemental analysis. (C) 2015 Elsevier Ltd. All rights reserved. English Elsevier BV Characterization of food waste-recycling wastewater as biogas feedstock Article 10.1016/j.biortech.2015.07.089 1 Bioresource Technology, v.196, pp.200 - 208 Bioresource Technology 196 200 208 N scie scopus 000361040500027 2-s2.0-84938411919 Agricultural Engineering Biotechnology & Applied Microbiology Energy & Fuels Agriculture Biotechnology & Applied Microbiology Energy & Fuels Article MUNICIPAL SOLID-WASTE ANAEROBIC-DIGESTION POPULATION-DYNAMICS HYDROGEN-PRODUCTION LAB-SCALE START-UP COMMUNITY SLUDGE STATE BIOAUGMENTATION Anaerobic digestion Wastewater characterization Seasonal variation Acidogenesis Biochemical methane potential