含水率对甘蔗叶干法发酵产沼气效果的影响

Effects of Moisture Content on Biogas Production by Dry Anaerobic Fermentation of Sugarcane Leaves

以甘蔗为原料,研究了含水率对干法厌氧发酵产沼气效果的影响。结果表明:发酵物料含水率越高,总产气量越大,单位干物质产气量越高。发酵原料含水率为81%时,发酵30 d的总产气量最高,达到19 550 m L,单位干物质产气量为158.35 m L/g,甲烷含量61.06%,相对其他2个处理而言,更有利于甘蔗叶干法厌氧发酵的进行。本研究结果为甘蔗叶干法沼气工程工艺设计提供了理论依据。

The effect of moisture content on biogas production from sugarcane leaves was studied. The results showed that： when the moisture content of raw material was greater, the total gas production and the unit TS gas production was better. When the moisture content was 81%, the gas yield reached the maximum of 19 550 rnL in 30 days, the gas production rate of dry matter was 158.35 mL/g and the methane content was 61.06%. Therefore, 81% moisture content in favor of sugarcane leaves to carry out dry anaerobic fermentation. The experimental results had provided basis parameters for the process design of dry anaerobic fermentation project.