产甲烷
厌氧消化
零价铁
氨
甲烷
化学
碳纤维
环境化学
无机化学
无氧运动
氮气
甲烷八叠球菌
核化学
生物化学
材料科学
有机化学
生物
吸附
复合材料
复合数
生理学
作者
Jibao Liu,Jeffrey Zheng,Yu-Tong Niu,Zhuang Zuo,Junya Zhang,Yuansong Wei
标识
DOI:10.1016/j.biortech.2020.123503
摘要
Ammonia inhibition is a prominent problem for anaerobic digestion (AD) of nitrogen-rich organic wastes. This study evaluated the effect of zero valent iron (ZVI) and its hybrid with activated carbon (AC), graphite and Fe-C material on the mitigation of ammonia inhibition under ammonia concentration over 5 g/L, according to the batch mode experiments. Results showed that ZVI (4 g/L) and its hybrid with carbon-based material preserving methane production from ammonia inhibition, with kinetics of shortening lag phase from 4.77 d to 2.62 d or even below 2 d with carbon-based material. ZVI preserved methane production with the enrichment of Methanosarcina (the relative abundance was over 80%), which was mostly derived from the activating hydrogenotrophic methanogenesis through the enhanced DIET but not the changes of ORP and FAN.
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