摘要
以难降解废弃物--醋糟为原料,通过与猪粪、鸡粪进行混合厌氧发酵,试验了在中温(37℃)不同配比下的厌氧发酵情况。试验发现:醋糟与猪粪最佳试验组的挥发性固体(VS)含量配比为1∶3,最终累积甲烷产量为286.51 mL·g^-1VS,稳定阶段的平均协同增益产气率为7.71%;醋糟与鸡粪最佳试验组的挥发性固体含量配比为1∶3,累积甲烷产量为312.57 mL·g^-1VS,稳定阶段的平均协同增益产气率为2.8%。结果表明醋糟与猪粪、鸡粪混合厌氧发酵具有良好的发酵潜力,以及较高的物料协同性,可以使用该方法有效处理醋糟。
Co-digestion has gained wide attention due to its great compatibility and synergy with raw materials. Vinegar residue is not easily degraded as a single feed under normal anaerobic conditions. Therefore, in this study, it was mixed with pig and chicken manure for codigestion at medium temperature(37 ℃)to enhance its value. Through a series of systematically designed batch experiments, it was found that the optimum vinegar to pig manure ratio of volatile solids was 1∶3, with the final cumulative methane production capacity up to 286.51 mL·g^-1 VS, demonstrating a synergistic gain of 7.71% in total methane production. The optimum ratio of volatile solids and cumulative methane production for vinegar and chicken manure mixture were 1∶3 and 312.57 mL·g^-1 VS respectively, while the average synergistic gain in the methane production was 2.8%. On the other hand, the effect of co-digestion on the methane concentration in the biogas was insignificant when pig manure was used;and for the case where chicken manure was utilized, the methane concentration decreased with increasing vinegar residue content. Nonetheless, the results demonstrate the synergistic co-digestive effect between vinegar residue and animal manure, suggesting the potential application of anaerobic co-digestion technology to treat vinegar residue.
作者
周冠男
陈琳
郑涛
周政忠
袁浩然
ZHOU Guan-nan;CHEN Lin;ZHENG Tao;ZHOU Zheng-zhong;YUAN Hao-ran(Institute of Urban and Rural Mines,Changzhou University,Changzhou 213100,China;Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China)
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2019年第6期1357-1364,共8页
Journal of Agro-Environment Science
基金
国家自然科学基金项目(51703014)
江苏省自然科学基金项目(BK20160495)
中国科学院战略性先导科技专项(XDA13040102)
广州市重点合作创新项目(201604030077)~~
关键词
混合厌氧发酵
醋糟
猪粪
鸡粪
anaerobic co-digestion
vinegar
pig manure
chicken manure
