摘要
在中温(35℃)条件下,采用批式发酵方式,研究了牛粪对互花米草厌氧生物转化的影响以及牛粪与互花米草不同混合比例对互花米草厌氧生物转化的影响。试验设置了互花米草与牛粪VS(挥发性固体)比分别为7︰1(SC71)、3︰1(SC31)、1︰1(SC11)、1︰3(SC13)和1︰7(SC17)等5个处理。结果表明:混合发酵对系统产气有促进作用,日产气量稳定,产气高峰较单独发酵提前了13d,累积产气量提高了38.83%。牛粪与互花米草不同比例混合发酵的试验中,SC71、SC11、SC13和SC17的累积产气量分别为SC31的92.99%、79.00%、73.59%和61.17%;混合发酵提高了系统的缓冲能力,牛粪的比例越高,系统的缓冲能力越强,且不会出现有机酸的积累;X射线衍射谱图和傅里叶红外光谱的结果进一步证明,混合发酵促进了微生物对互花米草中有机物的分解,对纤维素结晶区的破坏有一定的促进作用。以互花米草与牛粪VS比3︰1的效果最好.
Effects of cow feces on anaerobic digestion process of Spartina alterniflora and the characteristics of anaerobic digestion with different ratios of cow feces and Spartina alterniflora were studied to promote biogas production.The results indicated that co-digestion meliorated the environment where microorganisms lived and increased the cumulative biogas production by 38.83%.Daily biogas production was stable and the peak was advanced for 13 days.When the ratio of Spartina alterniflora to cow feces was 3:1,...
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2009年第3期179-183,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
中国博士后科学基金(20060400277)
江苏省博士后科研资助计划(0602016B)
江苏省科技项目(BS2007148)
南京市科技计划项目(200801072)
上海同济高廷耀环保科技发展基金
关键词
厌氧发酵
纤维素
沼气
互花米草
牛粪
anaerobic fermentation
cellulose
biogas
Spartina alterniflora
cow feces
