| 邢 杰,尹冬雪,翟宁宁,王晓娇,杨改河,冯永忠,任广鑫.羊粪与麦秆不同配比中温厌氧发酵特性[J].农业环境科学学报,2014,33(3):593-599. |
| 羊粪与麦秆不同配比中温厌氧发酵特性 |
| Mesophilic Anaerobic Digestion of Sheep Manure and Wheat Straw Mixture with Different Mixing Ratios |
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| DOI：10.11654/jaes.2014.03.028 |
| 中文关键词: 羊粪 麦秆 厌氧发酵 |
| 英文关键词: sheep manure wheat straw anaerobic digestion |
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| 中文摘要: |
| 为了研究羊粪与小麦秸秆的混合厌氧发酵效果，以羊粪和麦秆为发酵原料，以常温厌氧发酵池的沼液为接种物，将羊粪与麦秆按照质量比为1∶9、3∶7、5∶5、7∶3、9∶1的配比，在总固体质量分数为8%、35 ℃的恒温条件下进行厌氧发酵。结果显示：羊粪与麦秆混合发酵产气效果最佳的配比为7∶3，配比为1∶9的最差，后者的累积产气量仅为前者的30.1%；各个配比均可得VFA与累积产气量的显著性回归方程；pH值、VFA、碱度与日产气量动态相关。该试验结果为禽畜粪便和农作物秸秆厌氧发酵的资源化利用途径提供了理论依据。 |
| 英文摘要: |
| Anaerobic digestion is an efficient way to dispose and recycle agricultural organic wastes. This paper investigated the performance of anaerobic digestion of sheep manure and wheat straw mixture with different mixing ratios. Experiments were conducted in self-manufactured anaerobic digestion reactor at 35 ℃ with sheep manure/wheat straw ratios of 1∶9, 3∶7, 5∶5, 7∶3 and 9∶1 and total solid concentrations of 8% in the reactor. The pH value, contents of volatile fatty acid（VFA） and total alkalinity were examined every 6 days during anaerobic digestion. The highest cumulative biogas yield of 9580 mL was obtained in sheep manure and wheat straw mixture at the ratio of 7∶3 , while the lowest biogas production of 2886 mL was observed at the ratio of 1∶9, accounting for only 30.1% of the highest. Significant regression models for VFA and cumulative biogas yields under all ratios suggested a remarkable role of VFA in biogas production. Daily biogas yield was dynamically correlated with the pH value, VFA and total alkalinity. This study may provide a new way to effectively utilize livestock manure and crop residues. |
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