Resolving the Discontinuity in Experimental and Theoretical Investigations of Nanofiltration Performance Modeling

解决纳滤性能建模实验和理论研究中的不连续性

• 批准号: 0332432
• 负责人: Amy Childress
• 金额: --
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0332432&HistoricalAwards=false
• 关键词: Resolving; Discontinuity; Experimental; Theoretical; Investigations

0332432 Childress Nanofiltration (NF) membranes are used in a wide range of drinking water, wastewater, and industrial applications. The advantage of NF membrane processes is that they require lower operating pressures than reverse osmosis (RO) processes and have higher rejection than ultrafiltration (UF) processes. Separation by NF membranes occurs primarily due to size exclusion and electrostatic interactions and is therefore dependent on the surface and pore properties of the membranes. Despite the increasing use of NF in various applications, the transport mechanisms are not well understood and thus the modeling of NF membrane rejection is still not very accurate. This investigation will take a comprehensive approach to experimentally and theoretically evaluating the effects of NF surface and pore properties on membrane performance.

0332432儿童纳滤膜广泛用于饮用水、废水和工业应用。纳滤膜工艺的优点是比反渗透(RO)工艺需要更低的操作压力，比超滤(UF)工艺有更高的截留率。纳滤膜的分离主要是由于尺寸排斥和静电相互作用，因此取决于膜的表面和孔的性质。尽管纳滤膜在各种应用中的应用越来越多，但其转运机制还不是很清楚，因此对纳滤膜截留的模拟仍然不是很准确。本研究将从实验和理论上综合评价纳滤膜的表面和孔性质对膜性能的影响。