TY - JOUR
T1 - A critical review of transport through osmotic membranes
AU - Wang, Jinwen
AU - Dlamini, Derrick S.
AU - Mishra, Ajay K.
AU - Pendergast, Mary Theresa M.
AU - Wong, Mavis C.Y.
AU - Mamba, Bhekie B.
AU - Freger, Viatcheslav
AU - Verliefde, Arne R.D.
AU - Hoek, Eric M.V.
N1 - Funding Information:
JW was funded by a scholarship from the Chinese Scholarship Council and by the UCLA Henry Samueli School of Engineering and Applied Science and Department of Civil and Environmental Engineering . DSD was funded by the University of Johannesburg, Faculty of Science . MTMP was supported by National Science Foundation Graduate Research Fellowship , Grant no. DGE-0707424 . MCYW was supported by National Science Foundation GK-12 Graduate Teaching Fellowship (SEE-LA) Award no. 0742410.
PY - 2014/3/15
Y1 - 2014/3/15
N2 - Herein, we review mechanisms and models of solute transport relevant to nanofiltration (NF), reverse osmosis (RO), and forward osmosis (FO) membrane separation processes. We first consider state of the art polymeric NF, RO, and FO membrane properties and how these properties influence water and solute transport. Next, we critically review classical models (i.e., pore flow, solution-diffusion, and Nernst-Planck) and discuss the shortcomings of each, particularly focusing on their inability to explain fundamental relationships between water/solute transport and membrane properties, such as free volume, crystallinity, extent of swelling, and the presence of filler materials in mixed matrix/nanocomposite membranes. We then review modern structure-performance models that attempt to relate water/solute transport to quantifiable membrane structure and solute/water/polymer interactions. Finally, we consider both classical and modern mass transfer models that describe external, internal, and enhanced concentration polarization - all of which strongly influence water/solute transport through NF, RO, and FO membranes.
AB - Herein, we review mechanisms and models of solute transport relevant to nanofiltration (NF), reverse osmosis (RO), and forward osmosis (FO) membrane separation processes. We first consider state of the art polymeric NF, RO, and FO membrane properties and how these properties influence water and solute transport. Next, we critically review classical models (i.e., pore flow, solution-diffusion, and Nernst-Planck) and discuss the shortcomings of each, particularly focusing on their inability to explain fundamental relationships between water/solute transport and membrane properties, such as free volume, crystallinity, extent of swelling, and the presence of filler materials in mixed matrix/nanocomposite membranes. We then review modern structure-performance models that attempt to relate water/solute transport to quantifiable membrane structure and solute/water/polymer interactions. Finally, we consider both classical and modern mass transfer models that describe external, internal, and enhanced concentration polarization - all of which strongly influence water/solute transport through NF, RO, and FO membranes.
KW - Forward osmosis
KW - Membrane transport
KW - Nanofiltration
KW - Reverse osmosis
KW - Structure-performance
UR - http://www.scopus.com/inward/record.url?scp=84892876272&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2013.12.034
DO - 10.1016/j.memsci.2013.12.034
M3 - Review article
AN - SCOPUS:84892876272
SN - 0376-7388
VL - 454
SP - 516
EP - 537
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -