Osmotic backwash of fouled FO membranes: Cleaning mechanisms and membrane surface properties after cleaning
详细信息 查看全文
- 作者：Machawe M Motsaa ; machawemmvulane@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Bhekie B. Mambaa ; Justice M. Thwalab ; Arne R.D Verliefdec
- 关键词：Alginate ; Cross-flow velocity ; Forward osmosis ; Fouling ; Membrane cleaning ; Osmotic backwash ; Permeate rate
- 刊名：Desalination
- 出版年：2017
- 出版时间：16 January 2017
- 年：2017
- 卷：402
- 期：Complete
- 页码：62-71
- 全文大小：1770 K
文摘
- •
Alginic sodium salt (200 g/L) was used as a model foulant.
- •
Feed solution ionic strength was adjusted to 0.5 M using NaCl and CaCl2.
- •
Permeate drag influenced gel layer structure and removal.
- •
Membrane flux was successfully restored to more than 90% after cleaning.
- •
Cleaning was a combined effect of permeate rate and tangential shear force.