摘要
为提高蘑菇栽培废料菇渣的利用效率,以菇渣为发酵原料,进行了总固体质量分数(TS)为7%的湿式发酵和TS范围为16.5%~23.6%的干式发酵的厌氧消化实验。结果表明:湿发酵中当菇渣与菇脚质量比例为1∶0和2∶1时产气效果最佳,产气率分别为301.25 mL/g和300.60 mL/g;在35℃的中温干发酵中当接种率低于30%,TS高于19.1%时,反应不能正常启动;在TS为19.1%条件下,当采取55℃高温发酵时可实现顺利启动,产气率最高,为328.90 mL/g,45℃时产气率为112.40 mL/g。实验结果说明菇渣具有高产气潜力,干发酵时55℃高温发酵可避免启动酸化,且产气效率优于湿发酵。
In order to improve the utilization efficiency of mushroom cultivation waste,mushroom residue was used as raw material for fermentation to conduct anaerobic digestion experiments with wet fermentation of 7% TS mass fraction and dry fermentation of 16.5%~23.6% TS mass fraction.The results showed that the experimental groups at the ratio of 1:0 and 2:1 could gain better effect of gas production in wet fermentation,and the gas production rate were 301.25 mL/g and 300.60 mL/g respectively.The dry fermentation reaction could not be started at medium temperature of 35℃,the rate of inoculation less than 30% and the TS mass fraction higher than 19.1%.Under the TS mass fraction of19.1% condition,the reaction could be started successfully and the highest gas production rate of 328.90 mL/g was got with high temperature of 55℃.The gas production rate was 112.40 mL/g at temperature of 45℃.The experimental results showed that mushroom residue had a high potential.The high temperature fermentation of 55℃ could avoid the acidification at dry fermentation,and the gas production rate was better than the rate of wet fermentation.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2013年第S2期130-135,共6页
Transactions of the Chinese Society for Agricultural Machinery
基金
公益性行业(农业)科研专项经费资助项目(20130399)
中央高校基本科研业务费专项资金资助项目(2013PY053
2011PY007)
关键词
菇渣
厌氧发酵
接种率
甲烷
Mushroom residue Anaerobic fermentation Inoculation rate Methane
