厌氧消化
食物垃圾
水解
化学
制浆造纸工业
甲烷
降级(电信)
无氧运动
废物管理
生物化学
生物
生理学
电信
有机化学
计算机科学
工程类
作者
Tugui Yuan,Ran Sun,Mingshuai Shao,Qiyong Xu
标识
DOI:10.1016/j.renene.2023.119213
摘要
The influence of the combination of sludge load control and iron oxide (IO) addition strategies on food waste anaerobic digestion (AD) was explored. The results showed that low sludge loads or IO addition could significantly enhance AD performance. Low sludge loads promoted substrate hydrolysis and volatile fatty acids degradation, which enhanced the biochemical methane potential (BMP) and production rate, respectively. IO addition promoted the CH4 yield and maximum CH4 production rate (Rm) by 65.50% and 206.79%, respectively, by promoting hydrolysis and interspecies electron transfer among syntrophic microbes. Moreover, although the presence of IO could prevent the failure of AD in extremely high sludge load conditions, it could not ensure complete BMP recovery. In an IO-assisted reactor, low sludge loads decreased the methanogenic lag phase by 53.15% and increased the BMP and Rm by 49.93% and 120.11%, respectively. Although adequate IO dosage could effectively improve the digester performance, excessive dosage may limit the economic benefits. Overall, the AD performance could be optimized by simultaneously controlling the sludge load and IO addition.
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