化工学报Issue(5)：1906-1912,7.DOI:10.3969/j.issn.0438-1157.2014.05.050
农业秸秆湿干两级厌氧发酵制沼气技术
Methane production from corn stalk by wet-dry two-stage anaerobic digestion process
摘要
Abstract
Dry fermentation is a potential trend in biogas industry, but the slow start-up and uneven mass transfer in the fermentation system block its application. In this study, wet fermentation was adopted as the start-up phase of dry fermentation to promote two-stage anaerobic fermentation. The effect of the fermentation time of the first wet fermentation stage (3 d, 5 d, 10 d, 15 d and 25 d) on the two-stage anaerobic fermentation was investigated. Lignocellulose degradation and SCOD (soluble chemical oxygen demand) changes in the first-stage wet fermentation were tested and the kinetics analysis for the two-stage fermentation process was fitted. The total methane yield of the whole fermentation with the wet fermentation period of 3, 5, 10, 15 and 25d were 208.17, 185.83, 218.63, 219.44 and 218.85 ml·(g VS)-1, respectively, which indicated that the period of wet fermentation stage above 10 d was necessary to guarantee biogas production of the dry fermentation process. Kinetics fitting analysis showed that the RC model was more suitable for the experimental study on anaerobic fermentation process, compared with the GM and LM models.关键词
干式发酵/厌氧启动/两级发酵/秸秆Key words
dry anaerobic fermentation/anaerobic start-up/two-stage fermentation/corn分类
资源环境引用本文复制引用
连淑娟,师晓爽,袁宪正,杨智满,王传水,郭荣波..农业秸秆湿干两级厌氧发酵制沼气技术[J].化工学报,2014,(5):1906-1912,7.基金项目
国家自然科学基金项目（21307143，41276143）；国家科技支撑计划项目（2013BAD22B03）；中国科学院重点部署项目（KGCX2-EW-317）；山东省沼气工业化生产与利用工程实验室项目。 （）
