| 陶瓷膜澄清厚朴水提液膜污染机理的研究 |
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| 引用本文： | 李梅生,赵宜江,周守勇,李卫星,邢卫红. 陶瓷膜澄清厚朴水提液膜污染机理的研究[J]. 化学工程, 2007, 35(12): 34-37 |
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| 作者姓名： | 李梅生 赵宜江 周守勇 李卫星 邢卫红 |
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| 作者单位： | 淮阴师范学院,化学系,江苏省低维材料化学重点实验室,江苏,淮安,223300;南京工业大学,膜科学技术研究所,江苏,南京,210009;淮阴师范学院,化学系,江苏省低维材料化学重点实验室,江苏,淮安,223300;南京工业大学,膜科学技术研究所,江苏,南京,210009 |
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| 基金项目： | 国家重点基础研究973项目(2003CB615707),江苏省高校自然科学研究计划项目(05KJB530009) |
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| 摘 要： | 采用一个经典模型描述了厚朴水提液过滤过程中的通量衰减,通过模型参数分析了膜的污染机理。分析结果表明孔径为50,200,500 nm的陶瓷膜主要由"完全孔堵塞"机理、"滤饼过滤"机理和"部分孔堵塞"机理控制;通过此污染机理的分析来指导膜清洗,孔径为50,200,500 nm的陶瓷膜清洗后分别恢复了84.5%,89.4%和90.0%左右;实验表明孔径为200 nm的陶瓷膜较适合厚朴水提液体系。
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| 关 键 词： | 陶瓷膜 厚朴水提液 膜污染 清洗 |
| 文章编号： | 1005-9954（2007）12-0034-04 |
Study of fouling mechanism in magnolia official aqueous extract clarification by ceramic membranes |
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| LI Mei-sheng,ZHAO Yi-jiang,ZHOU Shou-yong,LI Wei-xing,XING Wei-hong. Study of fouling mechanism in magnolia official aqueous extract clarification by ceramic membranes[J]. Chemical Engineering, 2007, 35(12): 34-37 |
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| Authors: | LI Mei-sheng ZHAO Yi-jiang ZHOU Shou-yong LI Wei-xing XING Wei-hong |
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| Abstract: | The observed flux decay of different pore size ceramic membrane was modeled using a modified differential equation used to describe classical dead-end filtration process.The results reveal that the separation processes of 50 nm,200 nm and 500 nm ceramic tubular membranes are controlled by "complete pore blocking","cake filtration" and "intermediate blocking filtration" mechanism respectively.According to the fouling mechanism,a feasible cleaning method was found.And the membrane water flux recovery rate is 84.5%,89.4% and 90.0% respectively.The results show that the 200 nm ceramic membrane is more suitable for the system. |
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| Keywords: | ceramic membrane magnolia official aqueous extract membrane fouling cleaning |
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