NaOH预处理对玉米秸秆固态厌氧消化的影响  

Enhancing solid-state anaerobic digestion of corn stover by using alkaline pretreatment

作　　者：崔凤杰[1,2] 李向菲[1] 周宇光[3] 陈华友[4] 孙文敬[1,2,5] 黄达明[1] 

机构地区：[1]江苏大学食品与生物工程学院,镇江212013 [2]江西省生物发酵食品添加剂工程技术研究中心,德兴334221 [3]中国农业大学工学院,北京100083 [4]江苏大学生命科学院,镇江212013 [5]百勤异VC钠有限公司,德兴334221

出　　处：《环境工程学报》2013年第5期1919-1924,共6页Chinese Journal of Environmental Engineering

基　　金：International Foundation for Science(F 4930-1);国家"973"重点基础研究发展计划项目(2009CB724700;2011CBA00800);国家自然科学基金资助项目(31101269);江苏大学"青年骨干教师培养工程"青年学术带头人培育计划;江西省科技条件平台建设项目(2010DTZ01900);江苏省优势科技创新团队项目(2010DQB800);江苏省教育厅自然科学基金资助项目(07KJD350034);江苏大学高级人才基金资助项目(07JDG020)

摘　　要：实验主要研究了NaOH预处理对玉米秸秆厌氧消化产气量和产气效率的影响。采用质量分数分别为1.0%、2.5%、5.0%和7.5%NaOH溶液对玉米秸秆进行24 h浸泡和未浸泡等预处理,测定其厌氧消化过程中各指标的变化。结果表明,经质量分数为5.0%NaOH浸泡24 h后,玉米秸秆木质素降解率最大,为38.67%;厌氧发酵累积产气量为226.75L/kg VS,与未经碱处理实验组相比提高了38.5%。该结果提示,5.0%NaOH溶液浸泡24 h后可使玉米秸秆厌氧消化的产气量和产气效率显著提高。The present paper focused on the effect of NaOH pretreatment on anaerobic digestion （AD） of corn stover. NaOH solution with the concentrations of 1.0% , 2.5% , 5.0% , 7.5% （M/V） was used for pretrea-ting corn stover with 24-soaked or no-soaked status, and the biogas production effeciency was determined during the AD process. The obtained data showed that lignin of corn stover was degraded up to 38.54% by 5.0% NaOH pretreatment for 24 h. The total gas yield was 226. 75 L/kg VS, which was 38.54% higher than the group without NaOH pretreatment. All the results indicated that the pretreatment of corn stover by 5.0% NaOH for 24 h was pre-ferred for further study due to its significant improvement of biogas prodution and efficiency of anaerobic digestion.

关 键 词：固态厌氧消化 玉米秸秆 NaOH预处理 木质素 

分 类 号：X712[环境科学与工程—环境工程]