TY - JOUR
T1 - Synthesis and fabrication of nanostructured hydrophobic polyazole membranes for low-energy water recovery
AU - Maab, Husnul
AU - Francis, Lijo
AU - Alsaadi, Ahmad Salem
AU - Aubry, Cyril
AU - Ghaffour, NorEddine
AU - Amy, Gary L.
AU - Nunes, Suzana Pereira
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2012/12
Y1 - 2012/12
N2 - Aromatic fluorinated polyoxadiazoles (F-POD) and polytriazoles (F-PT) were synthesized and for the first time manufactured into porous membranes by phase inversion and by electrospinning. The phase inversion F-POD membranes had a mean flow pore size (MFP) of 51nm, while for F-PT it was around 74nm. The electrospun membranes had a much larger pore size, the MFP for F-POD membrane was around 1.7μm and for F-PT it was 2.7μm. The membranes were tested for desalination of Red Sea water using direct contact membrane distillation (DCMD). By combining the high polymer hydrophobicity and high porosity, apparent contact angles up to 162° were obtained, assuring the operation with practically no liquid water leakage under pressure up to 0.9bar. Salt selectivity as high as 99.95% and water fluxes as high as 85Lm -2h -1 were demonstrated, operating at 80°C feed temperature and 22°C permeate. © 2012 Elsevier B.V.
AB - Aromatic fluorinated polyoxadiazoles (F-POD) and polytriazoles (F-PT) were synthesized and for the first time manufactured into porous membranes by phase inversion and by electrospinning. The phase inversion F-POD membranes had a mean flow pore size (MFP) of 51nm, while for F-PT it was around 74nm. The electrospun membranes had a much larger pore size, the MFP for F-POD membrane was around 1.7μm and for F-PT it was 2.7μm. The membranes were tested for desalination of Red Sea water using direct contact membrane distillation (DCMD). By combining the high polymer hydrophobicity and high porosity, apparent contact angles up to 162° were obtained, assuring the operation with practically no liquid water leakage under pressure up to 0.9bar. Salt selectivity as high as 99.95% and water fluxes as high as 85Lm -2h -1 were demonstrated, operating at 80°C feed temperature and 22°C permeate. © 2012 Elsevier B.V.
UR - http://hdl.handle.net/10754/562439
UR - https://linkinghub.elsevier.com/retrieve/pii/S0376738812005467
UR - http://www.scopus.com/inward/record.url?scp=84867740447&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2012.07.009
DO - 10.1016/j.memsci.2012.07.009
M3 - Article
SN - 0376-7388
VL - 423-424
SP - 11
EP - 19
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -