白腐菌预处理甘蔗叶发酵产沼气研究

    Research on producing biogas through pretreatment of sugarcane leaves with white-rot fungi

    • 摘要: 以甘蔗叶为发酵原料院研究白腐菌预处理对甘蔗叶产沼气效果的影响。结果表明院添加白腐菌可以加快甘蔗叶厌氧发酵启动速率院提早出现产气高峰。在白腐菌添加量为1.5%时院发酵40 d 的总产气量最高院可达606 L院最高甲烷含量为55.9%院干物质产气率可达202 L/kg。在25 d 的发酵时间内院白腐菌添加量不同院产气量相差不大院因此可以考虑缩短发酵周期院也可以获得较好的产气效果。在相同的实验条件下院采用白腐菌预处理的甘蔗叶总产气量和最高甲烷含量均低于纤维素酶预处理院因此还需要从菌种驯化尧预处理时间等方面作进一步的试验分析。

       

      Abstract: The effect of white-rot fungi pretreatment on biogas production from the sugarcane leaves was studied. The results showed that the biogas yield increased with adding white-rot fungi and the biogas peak advanced. When the added white-rot fungi dosage was 1.5%, the gas yield reached the maximum of 606 L, the highest methane content was 55.9% and the gas production rate of dry matter was 202 L/kg. The biogas yield had the little difference when the white-rot fungi dosage was different within 25 days. Therefore, we can also acquire higher biogas yield when shortening the fermentation time. Under the same experimental conditions, the total biogas yield and the highest methane content pretreatment with white-rot fungi were lower than that of cellulase pretreatment. Therefore there is a need for further analysis from the strain domestication, pretreatment time and other aspects.

       

    /

    返回文章
    返回