TY - JOUR
T1 - Evaluations of biochar amendment on anaerobic co-digestion of pig manure and sewage sludge
T2 - waste-to-methane conversion, microbial community, and antibiotic resistance genes
AU - Xu, Suyun
AU - Duan, Yuting
AU - Zou, Simin
AU - Liu, Hongbo
AU - Luo, Liwen
AU - Wong, Jonathan W. C.
N1 - Funding Information:
The authors of this study would like to thanks the sponsor from the National Natural Science Foundation of Chian (No. 51978595).
Publisher Copyright:
© 2021 Elsevier Ltd.
PY - 2022/2
Y1 - 2022/2
N2 - Effects of biochar on co-digestion of pig manure and dewatered sewage sludge under different total solids (TS) were investigated. Biochar could accelerate the start-up of methanogenesis and shorten the adaptation phase. At TS5%, the methane daily production in biochar group was 60.6% higher than the control; nevertheless, when TS increased, the gap between two groups gradually narrowed. Additionally, the change on antibiotics resistance genes (ARGs) was also affected by TS and the biochar addition. Moreover, biochar was beneficial to reduce ARGs in liquid phase. At TS14%, the total ARGs abundance in the liquid phase of biochar group was 41.4% lower than the control, among which the reduction rates of etB(P), sul1, rpoB2, macA, mupA and mupB were more prominent. These findings could provide useful guidance for developing ARGs elimination strategy before their release into the environment.
AB - Effects of biochar on co-digestion of pig manure and dewatered sewage sludge under different total solids (TS) were investigated. Biochar could accelerate the start-up of methanogenesis and shorten the adaptation phase. At TS5%, the methane daily production in biochar group was 60.6% higher than the control; nevertheless, when TS increased, the gap between two groups gradually narrowed. Additionally, the change on antibiotics resistance genes (ARGs) was also affected by TS and the biochar addition. Moreover, biochar was beneficial to reduce ARGs in liquid phase. At TS14%, the total ARGs abundance in the liquid phase of biochar group was 41.4% lower than the control, among which the reduction rates of etB(P), sul1, rpoB2, macA, mupA and mupB were more prominent. These findings could provide useful guidance for developing ARGs elimination strategy before their release into the environment.
KW - ARGs
KW - Biochar
KW - Co-digestion
KW - High solid anaerobic digestion
KW - Pig manure
UR - http://www.scopus.com/inward/record.url?scp=85120175369&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2021.126400
DO - 10.1016/j.biortech.2021.126400
M3 - Journal article
C2 - 34822984
AN - SCOPUS:85120175369
SN - 0960-8524
VL - 346
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 126400
ER -
