[J].HEILONGJIANG AGRICULTURAL SCIENCES,2020,(06):87-93.[doi:10.11942/j.issn1002-2767.2020.06.0087]
玉米秸秆生物炭与牛粪混合厌氧发酵工艺优化
- 文献标志码:
- A
- 摘要:
- 为提高厌氧发酵产气效率,在单因素试验基础上,采用响应面法对厌氧发酵工艺参数进行优化,通过Box-Behnken中心组合试验设计,以厌氧发酵产气量为响应值,研究发酵温度、总固体浓度和生物炭添加量3个因素对厌氧发酵的影响,建立相关数学模型,并进行试验验证。结果表明:3个因素对厌氧发酵产气效率的影响均达到显著水平,最优工艺条件为发酵温度40 ℃,总固体浓度8.7%,玉米秸秆炭7.8%,在此工艺条件下,厌氧发酵平均产气量达到2 544 mL,与预测产气量2 451 mL,两者偏差为3.8%。因此,所建模型能较好的用于生物炭与牛粪混合厌氧发酵产气量的预测。
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备注/Memo
收稿日期:2020-03-26