Abstract
This paper discusses the performance of NF270, NF90, BW30 and SW30 (Dow/FilmTec) membranes during filtration of single and mixed NaCl and Na2SO4 solutions at different feed concentrations and NaCl to Na2SO4 ratios. The feeds represent the compositions of possible streams after IX treatment in a combined ion exchange (IX)-nanofiltration (NF) process of water desalination. The impact of total feed concentration, the NaCl/Na2SO4 ratio and feed pH on membranes flux and rejection of sulphate and chloride ions were determined. All membranes showed excellent rejection of sulphate ions, while chloride rejection largely varied for NF membranes with changes in feed concentration, composition and pH. A high negative rejection of chloride ions was observed with NF270 membrane during treatment of binary aqueous solution with a high Na2SO4 to NaCl ratio due to the Donnan effect.
| Original language | English |
|---|---|
| Pages (from-to) | 51-57 |
| Number of pages | 7 |
| Journal | Desalination |
| Volume | 363 |
| DOIs | |
| Publication status | Published - 1 May 2015 |
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Keywords
- Binary NaCl/NaSO solutions
- Chloride rejection
- Desalination
- Nanofiltration
ASJC Scopus subject areas
- Chemical Engineering(all)
- Mechanical Engineering
- Chemistry(all)
- Materials Science(all)
- Water Science and Technology
Cite this
A combined ion exchange-nanofiltration process for water desalination : II. Membrane selection. / Hilal, Nidal; Kochkodan, Viktor; Al Abdulgader, Hasan; Johnson, Daniel.
In: Desalination, Vol. 363, 01.05.2015, p. 51-57.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A combined ion exchange-nanofiltration process for water desalination
T2 - II. Membrane selection
AU - Hilal, Nidal
AU - Kochkodan, Viktor
AU - Al Abdulgader, Hasan
AU - Johnson, Daniel
PY - 2015/5/1
Y1 - 2015/5/1
N2 - This paper discusses the performance of NF270, NF90, BW30 and SW30 (Dow/FilmTec) membranes during filtration of single and mixed NaCl and Na2SO4 solutions at different feed concentrations and NaCl to Na2SO4 ratios. The feeds represent the compositions of possible streams after IX treatment in a combined ion exchange (IX)-nanofiltration (NF) process of water desalination. The impact of total feed concentration, the NaCl/Na2SO4 ratio and feed pH on membranes flux and rejection of sulphate and chloride ions were determined. All membranes showed excellent rejection of sulphate ions, while chloride rejection largely varied for NF membranes with changes in feed concentration, composition and pH. A high negative rejection of chloride ions was observed with NF270 membrane during treatment of binary aqueous solution with a high Na2SO4 to NaCl ratio due to the Donnan effect.
AB - This paper discusses the performance of NF270, NF90, BW30 and SW30 (Dow/FilmTec) membranes during filtration of single and mixed NaCl and Na2SO4 solutions at different feed concentrations and NaCl to Na2SO4 ratios. The feeds represent the compositions of possible streams after IX treatment in a combined ion exchange (IX)-nanofiltration (NF) process of water desalination. The impact of total feed concentration, the NaCl/Na2SO4 ratio and feed pH on membranes flux and rejection of sulphate and chloride ions were determined. All membranes showed excellent rejection of sulphate ions, while chloride rejection largely varied for NF membranes with changes in feed concentration, composition and pH. A high negative rejection of chloride ions was observed with NF270 membrane during treatment of binary aqueous solution with a high Na2SO4 to NaCl ratio due to the Donnan effect.
KW - Binary NaCl/NaSO solutions
KW - Chloride rejection
KW - Desalination
KW - Nanofiltration
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UR - http://www.scopus.com/inward/citedby.url?scp=84924663718&partnerID=8YFLogxK
U2 - 10.1016/j.desal.2014.11.017
DO - 10.1016/j.desal.2014.11.017
M3 - Article
VL - 363
SP - 51
EP - 57
JO - Desalination
JF - Desalination
SN - 0011-9164
ER -