| 王星,李强,周正,贺静,邓雅月,张敏,尹小波.蒸汽爆破/氧化钙联合预处理对水稻秸秆厌氧干发酵影响研究[J].农业环境科学学报,2017,36(2):394-400. |
| 蒸汽爆破/氧化钙联合预处理对水稻秸秆厌氧干发酵影响研究 |
| Research on effect of combination of steam explosion and calcium oxide pretreatment on rice straw solid-state anaerobic digestion |
| 投稿时间：2016-10-31 |
| DOI：10.11654/jaes.2016-1387 |
| 中文关键词: 蒸汽爆破 氧化钙 预处理 秸秆 厌氧发酵 干发酵 沼气 |
| 英文关键词: steam explosion calcium oxide pretreatment straw anaerobic digestion solid-state fermentation biogas |
| 基金项目:公益性行业（农业）科研专项（201303099-01） |
| 作者 | 单位 | E-mail | | 王星 | 农业部沼气科学研究所, 成都 610041 | | | 李强 | 农业部沼气科学研究所, 成都 610041
农业部农村可再生能源开发利用重点实验室, 成都 610041 | | | 周正 | 农业部沼气科学研究所, 成都 610041
农业部农村可再生能源开发利用重点实验室, 成都 610041 | | | 贺静 | 农业部沼气科学研究所, 成都 610041
农业部农村可再生能源开发利用重点实验室, 成都 610041 | | | 邓雅月 | 农业部沼气科学研究所, 成都 610041
农业部农村可再生能源开发利用重点实验室, 成都 610041 | | | 张敏 | 农业部沼气科学研究所, 成都 610041
农业部农村可再生能源开发利用重点实验室, 成都 610041 | | | 尹小波 | 农业部沼气科学研究所, 成都 610041
农业部农村可再生能源开发利用重点实验室, 成都 610041 | yinxiaobo@caas.cn |
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| 中文摘要: |
| 为了提高水稻秸秆在厌氧干发酵中的利用效率，采用蒸汽爆破、氧化钙以及蒸汽爆破/氧化钙联合预处理（以下简称“联合处理”）水稻秸秆，考察不同处理方式对水稻秸秆的理化性质和厌氧干发酵的影响。结果表明：从扫描电子显微镜照片观察到，联合处理组与其他处理方式相比对水稻秸秆结构破坏最彻底。木质素含量测试结果显示，经过联合处理水稻秸秆中木质素含量从17.2%下降到12.2%，去除率可达29.1%。纤维素酶水解实验中，联合处理组的葡萄糖产量与木糖产量分别为877.56 mg·L-1和400.85 mg·L-1，比CK组提高了85.43%和1 283.39%。在厌氧干发酵实验中，联合处理组产甲烷延滞期最短（5 d），比CK组缩短了约6 d，第30 d累积产甲烷量占总产甲烷量（60 d）的86.4%，而CK组仅占55.7%，原料产甲烷率提升最明显（0.24 L·g-1 VS），比CK组提高了20.0%。动力学模型拟合结果表明，与蒸汽爆破处理、氧化钙处理相比，联合处理组对厌氧干发酵的促进作用最显著。 |
| 英文摘要: |
| In order to enhance the utilization of rice straw,the methods steam explosion(SE), calcium oxide(CaO) and combination of SE/CaO were used to pretreat rice straw,and the characteristic of rice straw and solid-state anaerobic digestion were also investigated. The results showed that the structure of rice straw was destroyed seriously, as while as the lignin content of rice straw decreased from 17.2% to 12.2% and the removal rate of lignin was 29.1% in the condition of SE/CaO pretreatment. The results of cellulose hydrolysis indicated that yield of glucose and xylose which pretreat by SE/CaO were 877.56 mg·L-1 and 400.85 mg·L-1, and were increased by 85.43% and 1 283.39% compared with the untreated samples. The solid-state anaerobic digestion experiment showed that the lag phase of samples pretreat by SE/CaO was 5 days which shorter 6 day than the untreated samples.The cumulative methane production in previous 30 days accounted 86.4% of total cumulative methane production in the condition of SE/CaO pretreatment, and the untreated was only 55.7%. The methane production potential of samples pretreat by SE/CaO was 0.24 L·g-1 VS which was the highest in three pretreatment, and increased 20.2% than the untreated. The fitting results of kinetic model indicated that SE/CaO pretreatment was the more suitable method to pretreat rice straw which compared with SE pretreatment and CaO pretreatment. |
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