DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Selective Removal of Barium and Hardness Ions from Brackish Water with Chemically Enhanced Electrodialysis

Journal Article · · ACS ES&T Water
 [1]; ORCiD logo [2];  [3]; ORCiD logo [2];  [4];  [5]; ORCiD logo [2]; ORCiD logo [6]
  1. Texas Tech Univ., Lubbock, TX (United States); Texas Tech University
  2. Texas Tech Univ., Lubbock, TX (United States)
  3. Univ. of Massachusetts, Lowell, MA (United States)
  4. Univ. of California, Merced, CA (United States)
  5. Texas Tech Univ., Lubbock, TX (United States); Univ. of California, Merced, CA (United States)
  6. Texas Tech Univ., Lubbock, TX (United States); Univ. of Massachusetts, Lowell, MA (United States)

The use of a nonconventional water resource for energy and industrial applications often requires extraction of low-level undesirable ions from matrices of benign dominant ions. In this study, the selective extraction of Ba2+ and Mg2+ from synthetic brine solutions was evaluated using strong acid cation-exchange membranes modified with the surface deposition of macrocyclic molecules including crown ethers and calixarenes. Compared to the bare membrane, vinylbenzo-18-crown-6 (VB18C6) and calix[4]arene-amended membranes showed increased selectivity for Ba2+ and Mg2+ with respect to the dominant ion (Na+) by up to fourfolds, with the calix[4]arene-modified membrane achieving more selective separation than VB18C6. Optimal selectivity was achieved at a moderate-to-high current density (3.1–6.3 mA/cm2), which was attributed to the alleviation of transport limitation in the boundary layer by the surface modification. Amendment of a calix[4]arene derivative with a crown-6 “boot strap” and two carboxylic groups resulted in reduced selectivity due to the formation of strong complexes with divalent ions. Furthermore, these results show that surface deposition of ion sequestrants can be a versatile approach to improve the membrane’s selectivity; however, the performance is sensitive to feed water salinity, current loading, and the macrocycle-ion chemistry, where there is a trade-off between ion affinity and mobility.

Research Organization:
Texas Tech Univ., Lubbock, TX (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0020204
OSTI ID:
1845084
Journal Information:
ACS ES&T Water, Journal Name: ACS ES&T Water Journal Issue: 2 Vol. 2; ISSN 2690-0637
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (37)

Extraction and Complexation of Alkali, Alkaline Earth, and F-Element Cations by Calixaryl Phosphine Oxides journal January 1999
Effect of conformation on metal ion extraction by calix[4]arene dicarboxylic acids journal August 2009
Proton-driven cation transport through polyamic acid membranes incorporating crown ether moiety journal January 1986
Swelling/deswelling of anionic copolymer gels journal May 1995
The solution-diffusion model: a review journal November 1995
Transport properties of phosphonic acid and sulfonic acid cation exchange membranes journal October 1996
On the cost of electrodialysis for the desalination of high salinity feeds journal December 2014
Recent developments on ion-exchange membranes and electro-membrane processes journal February 2006
Selective removal of arsenic and monovalent ions from brackish water reverse osmosis concentrate journal September 2013
Preparation and characterization of mono-valent ion selective polypyrrole composite ion-exchange membranes journal September 2006
Feasibility study on surface modification of cation exchange membranes by quaternized chitosan for improving its selectivity journal July 2008
Sodium chloride sorption in sulfonated polymers for membrane applications journal December 2012
Sodium chloride diffusion in sulfonated polymers for membrane applications journal January 2013
Selectivity of ion exchange membranes: A review journal June 2018
The hydrogen bonding and conformations of p-tert-butylcalix[4]arene as studied by IR spectroscopy and by DFT calculations journal November 2005
Transport properties of monovalent-ion-permselective membranes journal September 1997
Specific recognition of copper ion by lipid-bound double armed crown ether journal December 1993
An efficient synthesis of lithium-selective extractants: Tertiary-alkyl-14-crown-4 ethers journal January 1993
Studies on cation-exchange membranes having permselectivity between cations in electrodialysis journal August 2002
Nafion/PTFE composite membranes for fuel cell applications journal February 2003
Separation of H+/Cu2+ cations by electrodialysis using modified proton conducting membranes journal May 2003
Effect of Crown Ethers on the Ion-Exchange Behavior of Alkaline Earth Metals. Toward Improved Ion-Exchange Methods for the Separation and Preconcentration of Radium journal August 1997
High Selectivities among Monovalent Cations in Dialysis through Cation-Exchange Membranes Coated with Polyelectrolyte Multilayers journal November 2018
Coating of Nafion Membranes with Polyelectrolyte Multilayers to Achieve High Monovalent/Divalent Cation Electrodialysis Selectivities journal March 2015
Desalination and Reuse of High-Salinity Shale Gas Produced Water: Drivers, Technologies, and Future Directions journal August 2013
Co-precipitation of Radium with Barium and Strontium Sulfate and Its Impact on the Fate of Radium during Treatment of Produced Water from Unconventional Gas Extraction journal March 2014
Ionizable Calixarene-Crown Ethers with High Selectivity for Radium over Light Alkaline Earth Metal Ions journal October 1999
Electrodriven Ion Transport through Crown Ether–Nafion Composite Membrane: Enhanced Selectivity of Cs + over Na + by Ion Gating at the Surface journal May 2014
Cyclic polyethers and their complexes with metal salts journal December 1967
New Efficient Calixarene Amide Ionophores for the Selective Removal of Strontium Ion from Nuclear Waste:  Synthesis, Complexation, and Extraction Properties journal November 2001
Chemical Polymerization of Aniline on a Poly(styrene sulfonic acid) Membrane:  Controlling the Polymerization Site Using Different Oxidants journal July 2005
Effect of Cation Driven Loading of Dibenzo-18-Crown-6 in Nafion-117 Membrane on the Diffusion and Transport Behavior of Alkali Metal Ions journal September 2009
Kinetics and Equilibrium of Barium and Strontium Sulfate Formation in Marcellus Shale Flowback Water journal May 2014
Ion-capture electrodialysis using multifunctional adsorptive membranes journal April 2021
Molecular Design of Crown Ethers. 3. Extraction of Alkaline Earth and Heavy Metal Picrates with 14- to 17-Crown-5 and 17- to 22-Crown-6 journal February 1985
Water Management Challenges Associated with the Production of Shale Gas by Hydraulic Fracturing journal June 2011
Brackish water desalination in RO–single pass EDR system journal July 2009