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温度对蔬菜废弃物沼气发酵产气特性的影

, PP. 116-121

Keywords: 蔬菜废弃物,厌氧发酵,沼气,温度

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Abstract:

运用实验室自行设计的小型沼气发酵装置,以废弃的甘蓝菜叶作为发酵原料,研究了温度对蔬菜废弃物沼气发酵产气特性的影响。结果表明,中温条件((35±1)℃)试验组的挥发酸质量浓度、氨态氮质量浓度以及pH值都在正常范围内,且优于高温((55±1)℃)和室温发酵试验组,可保证系统的顺利运行。产气特性研究表明:中温条件的总产气量比高温条件总产气量高42.5%,最高甲烷含量比高温条件和室温条件下分别高7.6%和19.1%。因此,中温条件适于蔬菜废弃物厌氧发酵产气。

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