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化工学报  2014 

酒糟沼气化利用的基础研发

DOI: 10.3969/j.issn.0438-1157.2014.05.051, PP. 1913-1919

Keywords: 酒糟,厌氧发酵,甲烷,生物液态肥

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Abstract:

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、122.3ml·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。

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