摘要
酒糟是酒精工业和酿酒工业的废弃物，通过厌氧发酵不仅可以解决酒糟废弃物污染的问题，还可以提供能源，并且经厌氧发酵后的沼液、沼渣还可以用作生物肥。开展了中温（37℃）条件下的酒糟厌氧发酵产生沼气研究，并分析了厌氧发酵前后物料组成变化及酒糟沼液作为生物液态肥的可行性。结果表明：四种酒糟的沼气产量从高到低依次为玉米燃料乙醇酒糟、酱香型白酒酒糟、浓香型白酒酒糟、木薯燃料乙醇酒糟，对应的产气量分别为607.4、578.7、434.2、122.3 ml＆#183;g-1（以VS计）；各酒糟厌氧发酵产沼气的甲烷体积分数均在60%～70%之间；酒糟的沼气产量与其 VS 降解率呈正比；酒糟发酵液各元素及离子含量符合生物液态肥标准，是一种很好的生物液态肥原料。
Anaerobic digestion of stillage residue from the ethanol and wine industry is a promising method to provide energy and reduce waste. In addition, biogas slurry and biogas residue can be used as biological fertilizer after anaerobic digestion. In this study, anaerobic digestion of stillage was tested at medium temperature, meanwhile, the element changes and the feasibility of biogas slurry used as biological liquid fertilizer were investigated. The cumulative biogas yields from corn ethanol stillage, Maotai-flavor stillage, Luzhou-flavor stillage and cassava fuel ethanol stillage were 607.4, 578.7, 434.2, 122.3 ml＆#183;g-1（based on VS）, respectively. The methane contents of biogas ranged from 60% to 70%. The biogas potential of stillage was proportional to degradation of substrates. The ions content of biogas slurry was in the range of the standard of biological liquid fertilizer.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2014年第5期1913-1919,共7页
CIESC Journal
基金
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~~
关键词
酒糟
厌氧发酵
甲烷
生物液态肥
stillage
anaerobic digestion
methane
biological liquid fertilizer
