Fundamentals of low-pressure nanofiltration: Membrane characterization, modeling, and understanding the multi-ionic interactions in water softening
详细信息 查看全文
- 作者：Omar Labbana ; Chang Liub ; c ; Tzyy Haur Chongb ; c ; John H. Lienhard Va ; lienhard@mit.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Nanofiltration ; Low-pressure softening ; Layer-by-layer (LbL) deposition ; Characterization ; Solute transport and partitioning ; Negative rejection ; Seawater
- 刊名：Journal of Membrane Science
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：521
- 期：Complete
- 页码：18-32
- 全文大小：1684 K
文摘
- •
A new class of low-pressure NF membranes is modeled using the DSPM-DE model.
- •
The model is validated with uncharged solute, salt mixture, and seawater experiments.
- •
Low-pressure NF is primarily a result of the high membrane selectivity for monovalent ions.
- •
Selectivity is dominated by the pore dielectric constant, followed by the pore size.
- •
The sequence of multivalent ion rejection is a function of size and charge effects.