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Design of Anion Exchange Membranes and Electrodialysis Studies for Water Desalination

Author:
Khan, Muhammad   Luque, Rafael   Akhtar, Shahbaz   Shaheen, Aqeela   Mehmood, Ashfaq   Idress, Sidra   Buzdar, Saeed   ur Rehman, Aziz   


Journal:
Materials


Issue Date:
2016


Abstract(summary):

Anion exchange membranes are highly versatile and nowadays have many applications, ranging from water treatment to sensing materials. The preparation of anion exchange membranes (AEMs) from brominated poly(2,6-dimethyl-1,6-phenylene oxide) (BPPO) and methyl(diphenyl) phosphine (MDPP) for electrodialysis was performed. The physiochemical properties and electrochemical performance of fabricated membranes can be measured by changing MDPP contents in the membrane matrix. The influence of a quaternary phosphonium group associated with the removal of NaCl from water is discussed. The prepared membranes have ion exchange capacities (IEC) 1.09-1.52 mmol/g, water uptake (WR) 17.14%-21.77%, linear expansion ratio (LER) 7.96%-11.86%, tensile strength (TS) 16.66-23.97 MPa and elongation at break (E-b) 485.57%-647.98%. The prepared anion exchange membranes were employed for the electrodialytic removal of 0.1 M NaCl aqueous solution at a constant applied voltage. It is found that the reported membranes could be the promising candidate for NaCl removal via electrodialysis.


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