鸡粪与玉米秸秆的干式厌氧发酵实验研究

Study on dry anaerobic fermentation of chicken manure and corn straw

文章以鸡粪和玉米秸秆为发酵底物,开展了鸡粪干发酵、玉米秸秆预处理后干发酵、鸡粪和玉米秸秆混合干发酵等实验。实验结果表明:玉米秸秆经过质量分数为2%的Na OH溶液预处理后,产气效果最好;与鸡粪或玉米秸秆单独干发酵相比,鸡粪与玉米秸秆混合干发酵的产甲烷效果并无明显优势,但增加沼液回流后甲烷产量提高了1倍以上,实现了99.9%的产甲烷潜力。

Using chicken manure and corn straw as substrates, the dry anaerobic fermentation of chick manure, pretreated corn straw and the mixture of them were carried out. The results showed that the corn straw pretreated with 2% sodium hydroxide had the best gas production. The mixed dry fermentation of pretreated straw and chicken manure did not show advantages comparing to the mono-fermentation of chicken manure or corn straw, but when the recirculation of effluent was applied, the methane yield increased more than 1 times, achieving 99.9% of the methane production potential.