| 中药废水主要成分厌氧生物降解途径研究 |
| 摘要点击 2891 全文点击 2054 投稿时间：2006-11-20 修订日期：2007-02-12 |
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| 中文关键词 中药废水 厌氧生物降解 降解途径 黄芩甙 |
| 英文关键词 traditional Chinese medicine wastewater anaerobic biodegradation biodegradation pathway bacalin |
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| 中文摘要 |
| 通过小试研究，利用气-质联机（GC-MS）对黄芩甙的厌氧生物降解曲线和途径进行了探讨，对黄芩甙的降解数据进行趋势化模拟和线性回归分析，得到了相应的降解动力学方程.黄芩甙可能的降解途径为“脱糖→脱苯→开环→饱和化→拆链”，降解时间需47 h以上, 厌氧分解的主要产物是小分子氧化物，如醇、醛、酸、酯、烯烃以及还原态饱和烷烃.结果表明，黄芩甙降解的限速步骤在水解酸化阶段，适宜采用两相厌氧消化技术和较长的停留时间进行处理. |
| 英文摘要 |
| A laboratory-scale experiment was done. And the baicalin anaerobic biodegradation curve and pathway were discussed by analyzing the results of GC-MS. After analogue of status's trend and analysis of its regression, the biodegradation kinetic equation of baicalin was obtained. And the possible biodegradation pathway was “desugar →debentures →open benzene ring →saturating →disconnect links”. It took at least 47 h to biodegrade baicalin. The main products of anaerobic biodegradation were micro-molecule oxide, such as alcohols, aldehydes, acids, esters, olefin, and hydrocarbon of methane series. This result demonstrated that the rate-limiting steps of bacalin biodegradation were the hydrolyzing and acidification phase. It was suitable to use two-phase anaerobic process and long HRT to biodegrade baicalin. |
