农业工程学报2011，Vol.27Issue(6)：262-268,7.DOI:10.3969/j.issn.1002-6819.2011.06.047
互花米草与土豆混合厌氧发酵产酸和产沼气特性
Characteristics of acidification fermentation and biogas production for co-digestion of Spartina alterniflora and potato
摘要
Abstract
Influences of anaerobic co-digestion of Spartina alterniflora, a lignocellulosic material, and potato on acidification fermentation of S. Alterniflora and its biogas production were investigated by anaerobic batch digestion experiments conducted at S. Alterniflora to potato ratio of 6:1, 7:1 and 9:1 at 35 ℃. The results indicated that acidification fermentation for co-digestions was butyrate type compared with that of propionate type for mono-digestion of pure S. Alterniflora, and the total volatile fatty acids (TVFA) concentrations for co-digestion increased more than twice compared with that of mono-digestion of pure S.alterniflora. The results also indicated that the cumulative biogas yields for co-digestion at SC∶P ratios of 6∶1, 7∶1 and 9∶1, respectively amounted to 460, 431 and 415 mL/g VS, increased by 27.4%, 19.3% and 15.0% than the 361 mL/g VS obtained in mono-digestion of pure S. Alterniflora. In addition, the average methane contents of biogas produced in co-digestion at SC∶P ratios of 6∶1, 7∶1 and 9∶1 were 60.3%, 62.4% and 62.7%, respectively, about 3%-5% higher than 57.4% in mono-digestion of pure S. Alterniflora. It was concluded that great changes of VFAs were obtained for co-digestion compared with mono-digestion of pure S. Alterniflora, and in general, these changes were beneficial to improve biogas production and biogas quality of S.alterniflora digestion.关键词
厌氧混合发酵；互花米草；土豆；产酸发酵；沼气Key words
Anaerobic co-digestion/ Spartina alternijlora/ Potato/ acidification fermentation/ Biogas分类
资源环境引用本文复制引用
李继红,杨世关,郑正..互花米草与土豆混合厌氧发酵产酸和产沼气特性[J].农业工程学报,2011,27(6):262-268,7.基金项目
Fundamental Research Funds for the Central Universities (No.09QG19) （No.09QG19）
948 Project of Ministry of Agriculture (No.2010-S25). （No.2010-S25）
