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.
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.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2007年第11期2515-2519,共5页
Environmental Science
基金
国家高技术研究发展计划(863)项目(2002AA601310)
黑龙江省科技攻关计划重点项目(GA01C201-01)
哈尔滨工程大学校基金项目(002030260731)
黑龙江省博士后基金项目(01105306)
中国博士后科学基金项目(20060400243)
关键词
中药废水
厌氧生物降解
降解途径
黄芩甙
traditional Chinese medicine wastewater
anaerobic biodegradation
biodegradation pathway
bacalin
