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碱热水解改善杨树落叶厌氧消化性能的研究 被引量：3

Digestibility improvement of aspen leaf with alkaline hydrothermal pretreatment
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摘要 选用杨树落叶进行碱热水解后测定生物化学甲烷势(BMP),研究底物溶解、水解和产物厌氧消化性能的变化.结果表明,碱热处理显著加速杨树落叶溶解和水解,固相中半纤维素和蛋白质含量显著下降.170℃下,碱热水解后溶解性COD(SCOD)浓度为31.7g/L,乙酸浓度为1533mg/L.通过纤维素碱降解机理分析,提出乙酸生成途径.甲烷势试验表明,170℃下比生物气产量增量最大.高固体消化可以有效处理水解产物,运行表现更加稳定,有机负荷2.65g/(L?d)时甲烷转化率为25.3%. Effect of alkaline hydrothermal pretreatment on liquefaction, hydrolysis and digestibility of fallen aspen leaves was investigated by biochemical methane potential （BMP） assays. The solubilization and hydrolysis were significantly enhanced, especially for hemi-cellulose and protein. The SCOD and acetic acid concentration were 31.7g/L and 1533mg/L after pretreatment at 170℃, and formation pathways of acetic acid were proposed with mechanism analysis. The specific biogas production increase was highest in BMP assays. The semi-dry digestion system functioned steadily with the feed of hydrolysate, and methane conversion ratio on carbon basis was enhanced to 25.3% at loading rate of 2.65g/（L.d）.
作者 王昊 王洪涛
机构地区 清华大学环境科学与工程系
出处 《中国环境科学》 EI CAS CSCD 北大核心 2009年第2期181-185,共5页 China Environmental Science
基金 国家"863"项目(2006AA10Z422 2007AA06-Z350)
关键词 绿化废物 碱热水解 乙酸 生化甲烷势 高固体消化 green waste alkaline hydrolysis acetic acid biochemical methane potential semi-dry digestion
分类号 X705 [环境科学与工程—环境工程]
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参考文献9

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同被引文献100

  • 1邹德乙,马军,邹丹,张辉,刁荣林,郭春伟.不同微生物发酵剂及木醋液在草炭发酵中应用效果研究[J].腐植酸,2005(5):11-15. 被引量：8
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中国环境科学
2009年 第2期

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