含固率和电极间距对牛粪发酵产电性能的影响

发布时间：2018-04-13 04:33

本文选题：牛粪发酵 + 含固率　；参考：《环境工程学报》2016年01期

【摘要】：随着能源短缺和环境污染等问题的日益严重,农业废弃物资源化利用引起了广泛关注。为了从牛粪等农业生产废弃物中获取新能源,减少农业固体废物对环境的污染,研究了含固率和电极间距对牛粪发酵产电性能的影响,分析了产电过程中电压、电流、功率密度、挥发性脂肪酸VFA和COD等指标的变化规律。结果表明,含固率对牛粪发酵产电性能影响较大,电极间距影响较小。在碳氮比(C/N比)为18,含固率为1%,电极间距为2.5 cm时,产生的电压最高可达0.79 V,电流最高可达0.58 m A,功率密度幅值高达398 m W/m2,发酵产电结束后VFA增加了250%,COD去除率超过了80%。
[Abstract]:With the increasingly serious problems of energy shortage and environmental pollution, the utilization of agricultural wastes has attracted wide attention.In order to obtain new energy from agricultural waste such as cow dung and reduce environmental pollution caused by agricultural solid waste, the effects of solid content and electrode spacing on the electrical properties of cow dung fermentation were studied, and the voltage and current in the process of producing electricity were analyzed.Changes of power density, volatile fatty acid VFA and COD.The results showed that the solid content had a great effect on the electric properties of cow manure fermentation, and the electrode spacing had little effect on it.When the C / N ratio is 18, the solid content is 1, the electrode spacing is 2.5 cm, the maximum voltage is 0.79 V, the current is up to 0.58 Ma, the power density is as high as 398mW / m ~ 2. After the end of the fermentation, the removal rate of VFA increased by 250m ~ (-1) and exceeded 80 ~ (th).
【作者单位】：青岛农业大学资源与环境学院;
【基金】：环保部公益性行业科研专项(201209024) 国家级大学生创新创业训练计划(201410435038)
【分类号】：X713

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