Efficient methane production from waste activated sludge and Fenton-like pretreated rice straw in an integrated bio-electrochemical system

Autor: Chun-Xue Yang, Ling Wang, Yi-Jian Zhong, Ze-Chong Guo, Jia Liu, Shao-Peng Yu, Thangavel Sangeetha, Bao-Ling Liu, Chao Ni, Hong Guo
Rok vydání: 2022
Předmět:
Zdroj: Science of The Total Environment. 813:152411
ISSN: 0048-9697
DOI: 10.1016/j.scitotenv.2021.152411
Popis: Integrated microbial electrolysis cell-anaerobic digestion (MEC-AD) systems have demonstrated potential advantages for methane production in the presence of small amounts of residual inhibitors. In this study, a series of tests were conducted to analyse the acidification and methanogenesis performance of pretreated rice straw (RS) in anaerobic digestion (AD) and MEC-AD systems after the addition of Fenton-like reagents. The results indicated that the short-chain acids (SCFAs) accumulations reached 2284.64 ± 21.57 mg COD/L with a dosage ratio of 1/4 (g RS/g VSS sludge) in the MEC-AD system and that methane production increased by 63.8% compared with that of an individual AD system. In the interim, the net energy output reached 1.09 × 10
Databáze: OpenAIRE