Journal article

Publication year: 2018

Pages: 9-16

Journal: Bioresource Technology

Volume number: 267

ISSN: 0960-8524

eISSN: 1873-2976

DOI Link: https://doi.org/10.1016/j.biortech.2018.07.006

Publisher: Elsevier

Abstract: 
To optimize the energy yield (EY) of food waste (FW) via hydrothermal carbonization (HTC), a response surface method was applied. Hydrochars and spent liquor were further conducted to evaluate their characterization and anaerobic digestion potential. Results found that optimal parameters for HTC of FW were suggested as temperature of 260 degrees C, reaction time of 4 h and moisture of 80%, with higher EY of 66.1%. Higher heating value, good combustion quality, lower H/C and O/C ratios indicated that hydrochar could be utilized as a safe solid fuel. Biochemical methane potential (BMP) experiment showed that spent liquor and hydrochars could be used as feedstocks for anaerobic digestion. Interestingly, hydrochars added in the spent liquor could promote the specific methane yield, which was 2.53 times higher than no addition of hydrochars. The finding of this study could provide useful information for HTC of FW and the utilization of hydrochars and spent liquor.

Harvard Citation style: Zhao, K., Li, Y., Zhou, Y., Guo, W., Jiang, H. and Xu, Q. (2018) Characterization of hydrothermal carbonization products (hydrochars and spent liquor) and their biomethane production performance, Bioresource Technology, 267, pp. 9-16. https://doi.org/10.1016/j.biortech.2018.07.006

APA Citation style: Zhao, K., Li, Y., Zhou, Y., Guo, W., Jiang, H., & Xu, Q. (2018). Characterization of hydrothermal carbonization products (hydrochars and spent liquor) and their biomethane production performance. Bioresource Technology. 267, 9-16. https://doi.org/10.1016/j.biortech.2018.07.006