Department of Civil and Environmental Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1.
Bioresour Technol. 2011 Jul;102(14):7086-92. doi: 10.1016/j.biortech.2011.04.047. Epub 2011 Apr 28.
Laboratory scale two-stage anaerobic digestion process model was operated for 280 days to investigate the feasibility to produce both hydrogen and methane from a mixture feedstock (1:1 (v/v)) of municipal food waste and sewage sludge. The maximum hydrogen and methane yields obtained in the two stages were 0.93 and 9.5 mL/mL feedstock. To eliminate methanogenic activity and obtain substantial hydrogen production in the hydrogen reactor, both feedstock and mixed liquor required treatment. The heat treatment (100°C, 10 min) for feedstock and a periodical treatment (every 2-5 weeks, either heating, removal of biomass particles or flushing with air) for mixed liquor were effective in different extent. The methane production in the second stage was significantly improved by the hydrogen production in the first stage. The maximum methane production obtained in the period of high hydrogen production was more than 2-fold of that observed in the low hydrogen production period.
实验室规模的两段式厌氧消化工艺模型运行了 280 天，以研究从城市食品垃圾和污水污泥的混合物进料（1:1（v/v））中同时生产氢气和甲烷的可行性。在两个阶段中获得的最大氢气和甲烷产率分别为 0.93 和 9.5 mL/mL 进料。为了消除产甲烷活性并在氢气反应器中获得大量的氢气生产，需要对进料和混合液进行处理。进料的热处理（100°C，10 分钟）和混合液的定期处理（每 2-5 周进行一次，加热、去除生物质颗粒或用空气冲洗）在不同程度上是有效的。第一阶段的氢气生产显著提高了第二阶段的甲烷生产。在高氢气生产期间获得的最大甲烷产量是在低氢气生产期间观察到的产量的两倍多。
