School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, People's Republic of China.
School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
Environ Technol. 2023 Apr;44(11):1667-1678. doi: 10.1080/09593330.2021.2011428. Epub 2021 Dec 9.
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 SO/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 SO/COD ratio increasing from 0.1 to 2. At 1 g biochar loading, 344.97 mL CH/gCOD was obtained compared with the control group (220.70 CH/gCOD) at 2 of SO/COD. Biochar could also reduce the secondary accumulation of NH-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.
本文研究了生物炭对硫酸盐废水厌氧消化的影响，包括 COD 去除率、甲烷产量、中间产物和微生物群落结构的变化。结果表明，随着 SO/COD 从 0 增加到 0.1，硫酸盐可以促进厌氧消化，而 MPB 的活性受到抑制，导致 COD 去除率和甲烷产量随着 SO/COD 从 0.1 增加到 2 而下降。在生物炭投加量为 1 g 时，SO/COD 为 2 时，获得的 CH/gCOD 为 344.97 mL，比对照组（220.70 CH/gCOD）高。生物炭还可以减少 NH-N 和 TVFA 的二次积累。同时，随着生物炭的添加，产甲烷微生物被选择性富集，特别是产甲烷菌、产甲烷菌和产甲烷菌，而硫酸盐还原菌的生长受到抑制。
