摘要
在中温条件下(35±1)℃,对互花米草茎、叶和整株分别进行批式中温厌氧消化实验,分析发酵过程中日产气量、累积产气量、甲烷含量、pH值、VFA、TS、VS及固形物的元素变化.结果表明:在TS负荷为6%的条件下,互花米草茎、叶、整株厌氧发酵均具有很好的产气特性.产气率为:叶(399ml.g-1TS)>整珠(374m.lg-1TS)>茎(366ml.g-1TS),甲烷含量为:茎(69.11%)>整珠(68.87%)>叶(66.21%).pH值、VFA、TS、VS及固形物的元素的变化特征差异不大.叶中可能含有更多被微生物利用的物质,成分的差异是造成这种结果的重要原因.
The characteristics of anaerobic digestion of Spartina alterniflora（stem,leaf,whole-plant） was studied by batch experiments which were carried out at（35±1）℃.The daily biogas producation,cumulative biogas production,methane content,pH value,VFA,TS,VS and solid substance were analyzed during anaerobic digestion.The results indicated efficient biogas production when TS loading rate was 6%.The rate of gas production of the Spartina alterniflora were 399ml·g^-1 TS（leaf）〉374ml·g^-1TS（whole plant）〉366ml·g^-1 TS（stem）,and the methane content were stem（69.1%）〉whole-plant（68.87%）〉leaf（66.21%）.The difference of pH,VFA and decomposition of C and N in solid substance among different part were not significant.This result may be related to their composition.
出处
《环境化学》
CAS
CSCD
北大核心
2010年第5期909-913,共5页
Environmental Chemistry
基金
科技部十一五水专项(2008ZX07101-004)
江苏省科技项目(BS2007148)
南京市科技计划项目(200801072)
关键词
互花米草
厌氧发酵
茎
叶
沼气
Spartina alterniflora
anaerobic digestion
stem
leaf
biogas.
作者简介
通讯联系人，Tel：025—83596537：E-mail：xzluo@nju．edu．cn
