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Lee, Changsoo
Applied Biotechnology Lab for Environment (ABLE)
Research Interests
  • Bioconversion, Bioenergy, Biogas, Biological treatment, Biorefinery, Microbial community

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Characterization of food waste-recycling wastewater as biogas feedstock

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Title
Characterization of food waste-recycling wastewater as biogas feedstock
Author
Shin, Seung GuHan, GyuseongLee, JoonyeobCho, KyungjinJeon, Eun-JeongLee, ChangsooHwang, Seokhwan
Issue Date
2015-11
Publisher
ELSEVIER SCI LTD
Citation
BIORESOURCE TECHNOLOGY, v.196, pp.200 - 208
Abstract
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.
URI
https://scholarworks.unist.ac.kr/handle/201301/16625
URL
http://www.sciencedirect.com/science/article/pii/S0960852415010603
DOI
10.1016/j.biortech.2015.07.089
ISSN
0960-8524
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