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Biogasification performance of anaerobic co-digestion of kitchen residues and cattle manure
Author(s): 
Pages: 64-68
Year: Issue:  2
Journal: Rural Energy

Keyword:  厨余 牛粪 生物气 厌氧发酵 混合消化;
Abstract: 在中温(35℃)条件下,通过批式厌氧发酵对牛粪、厨余以及厨余和牛粪的混合物的产气性能进行了对比研究。结果表明,单独消化时,厨余的甲烷产量(以VS为基准)为362.2 ml/g,生物转化效率为60.2%,明显高于牛粪的144.3 ml/g和25.4%;混合消化时,由于发酵物营养平衡和C/N比得到改善,缓冲能力增强,因此混合消化效果要好于两者单独消化。在厨余/牛粪(质量比,下同)为11∶时,混合消化的协同作用最显著,对甲烷产量和生物转化效率的贡献率分别为17.3%和7.8%,消化时间缩短了9 d,说明混合消化是提高厌氧消化效率的有效途径。
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