【摘要】 以木薯酒精废醪为原料,通过调节pH值至5.0,在(35±1)℃的中温条件下进行批量式沼气发酵实验,发酵料液的TS浓度设为6%。实验结果表明,氢气发酵试验的运行时间为11 d,净产气量为1615 mL,产氢潜力为92.13 mL/g(TS)、97.58 mL/g(VS),能源转换效率为1.58%。针对产氢发酵和产甲烷发酵能源转换效率低这一问题,对产氢、产甲烷联合发酵进行了分析,讨论了原料种类、接种量、温度、pH值、发酵浓度、氢气分压等参数对联合厌氧发酵的影响以及对发酵过程中动力学和菌群的探讨,并对以厌氧产氢产甲烷联合发酵的方法处理木薯酒精废醪进行了讨论。研究结果可为以后木薯酒精废醪的能源高效利用提供参考。更多还原

【Abstract】 Using the Cassava alcoholic waste mash as raw material, batch fermentation at middle temperature(35±1) under the condition of total solid concentration was 6%.The experimental results showed that the biogas yield of the Cassava alcoholic waste was 92.13 mL/g(TS) and 97.58 mL/g(VS) during 31 days of anaerobic digestion. However, the energy conversion efficiency was only 1.58%,Therefore in view of the problem of low energy conversion efficiency drogen, this paper joint fermentation to produce hydrogen and methane production was analyzed, and discussed the sorts and quantity of raw material, temperature, pH, concentration of fermentation, the hydrogen partial pressure on parameters such as the effects of the combined anaerobic fermentation and the fermentation kinetics and flora in the process of research, and the joint fermentation with anaerobic methane producing hydrogen production methods of processing cassava alcohol waste mash was discussed, for the energy efficient utilization of cassava alcohol waste mash to provide the reference.更多还原