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以脱毒预处理的紫茎泽兰为原料,调节发酵体系的pH,可实现紫茎泽兰产氢产甲烷联合发酵.pH为4.7~5.5的情况下先产氢后调至中性产甲烷,对比实验为pH6.5~7.5的情况下先产甲烷后调节至酸产氢.实验结果表明:先产氢后产甲烷实验的TS和VS原料利用率均高于先产甲烷后产氢实验,且纤维素、半纤维素和木质素利用率也高出32.60%,45.80%和50.26%;紫茎泽兰产氢阶段终点可根据实验组、对照组产气趋势是否趋于一致来进行判断;先产氢后产甲烷实验的产甲烷速率比先产甲烷后产氢实验高出18.85%,有效缩短了发酵周期;先产氢后产甲烷实验实现了能源利用效率的68.54%,而先产甲烷后产氢实验只实现了能源利用效率的15.35%.实验得出,与先产甲烷后产氢发酵、单独产甲烷发酵、单独产氢发酵相比,紫茎泽兰联合产氢产甲烷发酵是理想的紫茎泽兰利用途径之一.
To take the virus-free pre-treated Eupatorium adenophorum as raw material and adjust the pH value of the fermentation system, we can achieve the combined fermentation of hydrogen and methane produced by Eupatorium adenophorum.When the pH is 4.7 ~ 5.5, , Compared with the first experiment after the production of methane was adjusted to acid hydrogen production under the condition of pH6.5 ~ 7.5.The experimental results show that the utilization rate of TS and VS raw materials after the first hydrogen production methanogenesis is higher than the hydrogen production experiment , And the utilization rates of cellulose, hemicellulose and lignin were also 32.60%, 45.80% and 50.26% higher than those of the control group. The end stage of hydrogen production stage of Eupatorium adenophorum could be judged according to whether the trend of gas production in the experimental group and the control group tended to be consistent ; Methane production after the first hydrogen production methanogenic rate higher than the hydrogen yield after the first-generation methane test 18.85%, effectively shortening the fermentation cycle; first methanogenic methane production experiment to achieve the energy efficiency of 68.54%, while the first production Methane hydrogen production experiment only achieved 15.35% of the energy efficiency.Experimental results show that, compared with the first-generation hydrogen production after methane fermentation, methane fermentation alone, hydrogen production alone fermentation, Eupatorium adenophorum combined with hydrogen production of methane fermentation It is one of the ideal ways to utilize Eupatorium adenophorum.