芦苇秸秆中温发酵产沼气的实验研究

文章以新鲜芦苇秸秆为发酵原料,分别对其进行打碎和切碎预处理,在恒温30℃条件下进行全混合批量式沼气发酵实验。实验结果表明,两种预处理方法的发酵时间均为62 d,芦苇秸秆打碎处理的TS产气率和VS产气率分别为467 mL·g^-1和570 mL·g^-1,芦苇秸秆切碎处理的TS产气率和VS产气率分别为560 mL·g^-1和685 mL·g^-1,芦苇秸秆切碎处理的产气潜力明显大于芦苇秸秆打碎处理,且芦苇秸秆切碎处理的甲烷含量也较前者高。说明将进行芦苇秸秆切碎处理有利于它发酵产沼气,发酵产出的沼气品质较好。

Biogas Production from Reed Straw at Medium Temperature

In this paper,fresh reed straw was used as fermentation raw material,which was crushed or shredded separately,and the whole mixed batch biogas fermentation experiments were carried out under the condition of constant temperature of 30°C.The results showed that the fermentation time of both pretreatment groups was 62 d,the TS and VS gas production rate of crushing group were 467 mL·g^-1 and 570 mL·g^-1,respectively,those for shredding group were 560 mL·g^-1 and 685 mL·g^-1,respectively.The biogas potential of shredding group was significantly greater than that of crushing group,and also the methane content was higher.It is indicated that the shredding treatment of reed straw was beneficial to the biogas fermentation,and the produced biogas was of good quality.