摘要
采用批次发酵方法,研究了不同生长状态水葫芦产气潜力、酸化特征。结果表明:处于不同生长状态的水葫芦产气潜力相差较大,正值分蘖期的水葫芦产气潜力达到336 ml/g(总固体,TS)和517 ml/g(挥发性固体,VS),而处于越冬缓慢生长期的水葫芦产气潜力仅为231 ml/g(TS)和266 ml/g(VS),前者的VS降解率是后者的1.48倍;水葫芦厌氧发酵过程中,甲烷最高含量可达75%;水葫芦酸化过程较快,pH经暂短下降后,迅速恢复到7.0左右,产生的有机酸主要是乙酸和丙酸,在有机酸含量最高时分别占总有机酸的46.70%、46.45%。
Potential productivity of water hyacinth from different growth stages and the anaerobic digestion process were investigated. The results indicated that water hyacinth in tillering stage produced significantly more biogas than that in winter senescence. Water hyacinth in tillering stage produced bioga at 336 ml/g （total solids, TS） and 517 ml/g（ volatile solids,VS） at 35 ℃, however, water hyacinth in winter senescence produced biogas at 231 ml/g （TS） and 266 ml/g （VS） ;the VS degradation of water hyacinth in tillering stage was 1.48 fold as great as that in senescence. In anaerobic digestion proces of water hyacinth in tillering stage, methane content of 75% was achieved, acetate and propionate were the main volatile fatty acid（ VFA）, which occupied 46. 70% and 46. 45% of total VFA when its value reached max, respectively.
出处
《江苏农业学报》
CSCD
北大核心
2009年第4期787-790,共4页
Jiangsu Journal of Agricultural Sciences
基金
江苏省农业自主创新项目(CX1077602)
国家支撑计划项目(2007BAD87B07)
江苏省科技项目(BS2007117)
关键词
水葫芦
厌氧发酵
有机酸
water hyacinth
anaerobic digestion
volatile organic acid
作者简介
叶小梅（1976-），女，福建长汀人，副研究员，博士研究生，主要从事有机废弃物能源化利用研究。
通讯作者：常志州，（E-mail）chang02@jaas．ac．cn
