| 萃取条件对支撑液膜法提取有机酸的影响 |
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| 引用本文： | 李秀芬,陶丽佳,李溯,陈坚.萃取条件对支撑液膜法提取有机酸的影响[J].环境科学与技术,2009,32(9). |
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| 作者姓名： | 李秀芬 陶丽佳 李溯 陈坚 |
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| 作者单位： | 1. 江南大学环境与土木工程学院,环境生物技术研究室;江南大学工业生物技术教育部重点实验室
2. 江南大学食品科学与技术国家重点实验室,江苏,无锡,214122 |
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| 基金项目： | 国家高技术研究发展计划(863)项目 |
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| 摘 要： | 采用支撑液膜法分离提取混合液中的有机酸,通过萃取工艺条件优化,探讨支撑液膜法提取有机酸的可行性。由疏水微滤膜组件、载体、有机溶剂和反萃取剂组成的支撑液膜体系可以有效实现有机酸的分离提取。气相色谱分析表明,当提取时间为360min、给液相有机酸浓度为20g/L、载体体积浓度为10%及温度为30℃时,总有机酸提取率可达79.3%,较好实现了有机酸的同步提取和浓缩。
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| 关 键 词： | 支撑液膜法 有机酸 萃取 |
Effect of Extraction Conditions on Separation of Organic Acid by Supported Liquid Membranes |
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| LI Xiu-fen,TAO Li-jia,LI Su,CHEN Jian.Effect of Extraction Conditions on Separation of Organic Acid by Supported Liquid Membranes[J].Environmental Science and Technology,2009,32(9). |
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| Authors: | LI Xiu-fen TAO Li-jia LI Su CHEN Jian |
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| Institution: | 1.Laboratory of Environmental Biotechnology;School of Environmental and Civil Engineering;2.Key Laboratory of Industrial Biotechnology of Ministry of Education;3.State Key Laboratory of Food Science and Technology;Jiangnan University;Wuxi 214122;China |
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| Abstract: | Organic acids are extracted by supported liquid membrane(SLM)from acidified broth of municipal sludge.Based on the optimization of extraction conditions,its feasibility was studied.Results showed that organic acids could be extracted by SLM system involved in microfiltration membrane module,extractive solvent,organic solvent and anti-extractive solvent.After 360min,the extraction system reached steady state with 50.8%of extraction efficiency.It increased with the increase of organic acid concentration.When ... |
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| Keywords: | supported liquid membranes organic acid extraction |
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