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Anaerobic digestion of sulphate wastewater mediated by biochar
被引:8
|作者:
Xu, Chenxi
[1
]
Ding, Yongyu
[1
]
Liu, Jiacheng
[1
]
Huang, Wenwen
[1
]
Cheng, Qunpeng
[1
]
Fan, Guozhi
[1
]
Yan, Juntao
[1
]
Zhang, Shunxi
[1
]
Song, Guangsen
[1
]
Xiao, Bo
[2
]
机构:
[1] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430073, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Environm Sci & Engn, Wuhan, Peoples R China
关键词:
Sulphate wastewater;
biochar;
anaerobic digestion;
COD removal rate;
methanogenesis;
METHANE PRODUCTION;
HYDROGEN;
CHALLENGES;
D O I:
10.1080/09593330.2021.2011428
中图分类号:
X [环境科学、安全科学];
学科分类号:
08 ;
0830 ;
摘要:
In this paper, the influences of biochar on the anaerobic digestion of sulphate wastewater, including the COD removal rate, methane yield, intermediate products and the change of microbial community structure, were investigated. The results showed that sulphate could promote the anaerobic digestion with the SO42-/COD ratio increasing from 0 to 0.1, while the activity of MPB was inhibited, which led to the decrease of COD removal rate and methane yield with the SO42-/COD ratio increasing from 0.1 to 2. At 1 g biochar loading, 344.97 mL CH4/gCOD(removal) was obtained compared with the control group (220.70 CH4/gCOD(removal)) at 2 of SO42-/COD. Biochar could also reduce the secondary accumulation of NH4+-N and TVFA. Meanwhile, methanogenic microorganisms were selectively enriched especially for methanobacterium, methanosaeta and methanolinea, while the growth of SRB was inhibited with biochar addition.
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页码:1667 / 1678
页数:12
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