Convective transport of boron through a brackish water reverse osmosis membrane

被引:42
|
作者
Kezia, Kezia [1 ]
Lee, Judy [1 ]
Hill, Anita J. [2 ]
Kentish, Sandra E. [1 ]
机构
[1] Univ Melbourne, Particulate Fluids Proc Ctr, Parkville, Vic 3010, Australia
[2] CSIRO, Proc Sci & Engn, Clayton, Vic 3169, Australia
基金
澳大利亚研究理事会;
关键词
Nernst-Planck; Donnan potential; Reverse osmosis; Boron; Surface charge density; PARTIAL MOLAR VOLUMES; NANOFILTRATION MEMBRANES; POLYAMIDE MEMBRANES; BORATE ION; REJECTION; SEAWATER; REMOVAL; PERFORMANCE; MODEL; LAYER;
D O I
10.1016/j.memsci.2013.05.041
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
In this work, cross-flow filtration experiments using a brackish water reverse osmosis polyamide membrane have been performed to gather boron rejection data as function of feed concentration, pressure, pH and salinity. Increasing transmembrane pressure increases the permeation of boron indicating that convective flow is important. This result is in contrast to the normal assumption that solution diffusion dominates in such systems. The extended Nernst-Planck equation with a Donnan-steric partition coefficient is used to analyse the transport mechanisms of both neutral boric acid and negatively charged borate ions through the RO membrane. The contribution of surface charge is experimentally determined by streaming potential measurements and the electrokinetic surface charge density is then calculated as a function of ionic strength and pH. It is found that a 0.380 nm pore radius and an effective membrane porosity of 0.05 shows good agreement with experimental data. Charge screening becomes more dominant with increasing ionic strength and this contribution is readily incorporated into the model. The study extends our understanding of the transport mechanism of boric acid and borate ions which can assist in predicting the performance of polyamide reverse osmosis membranes. It also raises questions as to the true mechanism of transport through such a membrane. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:160 / 169
页数:10
相关论文
共 50 条
  • [1] Reverse osmosis membrane performance for desalination of Algerian brackish water
    Bouchareb, Abderrezak
    Metaiche, Mehdi
    Lounici, Hakim
    Khoudja, Hakim Djafer
    Lefkir, Abdelwahab
    Drouiche, Nadjib
    DESALINATION AND WATER TREATMENT, 2019, 151 : 9 - 19
  • [2] Numerical simulation of brackish water desalination by a reverse osmosis membrane
    Anqi, Ali E.
    Alkhamis, Nawaf
    Oztekin, Alparslan
    DESALINATION, 2015, 369 : 156 - 164
  • [3] Enhancement of brackish water desalination using hybrid membrane distillation and reverse osmosis
    Ali, Emad
    Orfi, Jamel
    Najib, Abdullah
    Saleh, Jehad
    PLOS ONE, 2018, 13 (10):
  • [4] Effect of oxidation agents on reverse osmosis membrane performance to brackish water desalination
    Dept. of Chem. and Nucl. Engineering, Polytechnical University of Valencia, POB 22012, 46071 Valencia, Spain
    Desalination, 1-3 (83-89):
  • [5] Desalination of brackish water by nanofiltration and reverse osmosis
    Mohsen, MS
    Jaber, JO
    Afonso, MD
    DESALINATION, 2003, 157 (1-3) : 167 - 167
  • [6] Effect of oxidation agents on reverse osmosis membrane performance to brackish water desalination
    Iborra, MI
    Lora, J
    Alcaina, MI
    Arnal, JM
    DESALINATION, 1997, 108 (1-3) : 83 - 89
  • [7] REVERSE OSMOSIS PURIFIES BRACKISH WELL WATER
    不详
    GROUND WATER AGE, 1972, 6 (07): : 22 - &
  • [8] Effect of Electric Field on Membrane Fouling and Membrane Performance in Reverse Osmosis Treatment of Brackish Water
    Fu, Caixia
    Yi, Xuenong
    Gao, Yuqiong
    APPLIED SCIENCES-BASEL, 2024, 14 (02):
  • [9] Development of a transient model for the desalination of sea/brackish water through reverse osmosis
    Sobana, S.
    Panda, Rames C.
    DESALINATION AND WATER TREATMENT, 2013, 51 (13-15) : 2755 - 2767
  • [10] Thermodynamic modeling of solute transport through reverse osmosis membrane
    Song, LF
    CHEMICAL ENGINEERING COMMUNICATIONS, 2000, 180 : 145 - 167