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Ionic Liquid-Mediated Interfacial Polymerization for Fabrication of Reverse Osmosis Membranes

Journal Article · · Membranes
This study revealed the effects of incorporating ionic liquid (IL) molecules: 1-ethyl, 1-butyl, and 1-octyl-3-methyl-imidazolium chlorides with different alkyl chain lengths, in interfacial polymerization (IP) on the structure and property (i.e., permeate-flux and salt rejection ratio) relationships of resulting RO membranes. The IL additive was added in the aqueous meta-phenylene diamine (MPD; 0.1% w/v) phase, which was subsequently reacted with trimesoyl chloride (TMC; 0.004% w/v) in the hexane phase to produce polyamide (PA) barrier layer. The structure of resulting free-standing PA thin films was characterized by grazing incidence wide-angle X-rays scattering (GIWAXS), which results were correlated with the performance of thin-film composite RO membranes having PA barrier layers prepared under the same IP conditions. Additionally, the membrane surface properties were characterized by zeta potential and water contact angle measurements. It was found that the membrane prepared by the longer chain IL molecule generally showed lower salt rejection ratio and higher permeation flux, possibly due to the inclusion of IL molecules in the PA scaffold. This hypothesis was supported by the GIWAXS results, where a self-assembled surfactant-like structure formed by IL with the longest aliphatic chain length was detected.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
SC0012704
OSTI ID:
2470317
Journal Information:
Membranes, Journal Name: Membranes Journal Issue: 11 Vol. 12; ISSN 2077-0375
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

References (39)

Neutron Reflectivity and Performance of Polyamide Nanofilms for Water Desalination journal August 2017
Polyamide-surfactant interaction: Exploration of new avenues for reverse osmosis separation applications journal May 2018
Surfactant pretreatment of a polysulfone ultrafilter for reduction of antifoam fouling journal February 1994
The use of anionic surfactants for reducing fouling of ultrafiltration membranes: their effects and optimization journal March 1992
Composite reverse osmosis and nanofiltration membranes journal August 1993
Bench-scale testing of surfactant-modified reverse osmosis/nanofiltration membranes journal March 1998
Effect of surfactant addition on the morphology and pervaporation performance of asymmetric polysulfone membranes journal August 2000
Brackish water desalination for greenhouse agriculture: Comparing the costs of RO, CCRO, EDR, and monovalent-selective EDR journal February 2020
The effect of surfactant adsorption on surface wettability and flow resistance in slit nanopore: A molecular dynamics study journal March 2018
Effects of plasticizers and surfactants on the film forming properties of hydroxypropyl methylcellulose for the coating of diclofenac sodium tablets journal July 2009
Interfacially polymerized hydrophilic microporous thin film composite membranes on porous polypropylene hollow fibers and flat films journal August 2006
Polyamide thin film composite membranes prepared from isomeric biphenyl tetraacyl chloride and m-phenylenediamine journal May 2008
Study on a novel polyester composite nanofiltration membrane by interfacial polymerization of triethanolamine (TEOA) and trimesoyl chloride (TMC) journal July 2008
Fabrication and development of interfacial polymerized thin-film composite nanofiltration membrane using different surfactants in organic phase; study of morphology and performance journal November 2009
Fabrication of thin-film nanofibrous composite membranes by interfacial polymerization using ionic liquids as additives journal December 2010
Combining MBR and NF/RO membrane filtration for the removal of trace organics in indirect potable water reuse applications journal December 2010
Influence of polyvinyl alcohol on the surface morphology, separation and anti-fouling performance of the composite polyamide nanofiltration membranes journal February 2011
Synchrotron SAXS to probe cross-linked network of polyamide ‘reverse osmosis’ and ‘nanofiltration’ membranes journal December 2012
Transport through composite membranes, part 2: Impacts of roughness on permeability and fouling journal January 2013
Influence of bulk concentration on the organisation of molecules at a membrane surface and flux decline during reverse osmosis of an anionic surfactant journal February 2016
Morphology and porous structure of standalone aromatic polyamide films as used in RO membranes – An exploration with SANS, PALS, and SEM journal March 2019
Zwitterionic coating on thin-film composite membranes to delay gypsum scaling in reverse osmosis journal January 2021
Application of UF/NF/RO membranes for treatment and reuse of rendering plant wastewater journal January 2017
Effect of chlorination condition and permeability of chlorine species on the chlorination of a polyamide membrane journal October 2012
Facile Modification of Reverse Osmosis Membranes by Surfactant-Assisted Acrylate Grafting for Enhanced Selectivity journal February 2017
The Critical Need for Increased Selectivity, Not Increased Water Permeability, for Desalination Membranes journal March 2016
Aromatic Polyamide Reverse-Osmosis Membrane: An Atomistic Molecular Dynamics Simulation journal September 2016
Molecular Structure of Aromatic Reverse Osmosis Polyamide Barrier Layers journal March 2019
Modeling the Effect of Charge Density in the Active Layers of Reverse Osmosis and Nanofiltration Membranes on the Rejection of Arsenic(III) and Potassium Iodide journal December 2012
Solubilities of 1-Hexyl-3-methylimidazole Nitrate and 1-Octyl-3-methylimidazole Nitrate in Selected Solvents journal June 2011
What is the Origin of the Prepeak in the X-ray Scattering of Imidazolium-Based Room-Temperature Ionic Liquids? journal December 2010
Enhancing the permeability and anti-fouling properties of a polyamide thin-film composite reverse osmosis membrane via surface grafting of l-lysine journal January 2019
Inverse phase transfer catalysis versus interfacial catalysis. Effect of medium stirring in the epoxidation reaction of chalcone by hydrogen peroxide journal September 2002
New insight into the nanostructure of ionic liquids: a small angle X-ray scattering (SAXS) study on liquid tri-alkyl-methyl-ammonium bis(trifluoromethanesulfonyl)amides and their mixtures journal January 2009
Surface structure evolution in a homologous series of ionic liquids journal January 2018
X-ray Scattering Studies of Reverse Osmosis Materials journal August 2020
Functional group quantification of polymer nanomembranes with soft x-rays journal March 2018
Fouling behaviour of a reverse osmosis membrane by three types of surfactants journal March 2012
In Situ Modification of Reverse Osmosis Membrane Elements for Enhanced Removal of Multiple Micropollutants journal February 2019