Preparation of mineral source water from deep sea water: Reduction of sulfate ion using selemion ASV membrane

Adopting a laboratory-scaled electrodialysis (ED) process, we investigate the performance of a monovalent anion exchange permselective membrane in the reduction of the concentration of sulfate ions during the production of mineral source water from deep sea water (DSW). The dependence of the separation efficiency of anions on the operating time and the applied DC voltage is investigated based on a brine having salinity of about 15% prepared from DSW. The experimental results reveal that if the applied DC voltage is high, the change in the liquid volume during ED is dominated by the ions transported and the effect of electroosmosis. In addition, the amount of chloride ions transported correlates roughly linearly with the operating time, and the transport of sulfate ions is found to be blocked by chloride ions, presumably because of that the pore size of the permselective layer is close to the size of sulfate ions. © 2010 American Institute of Chemical Engineers AIChE J, 2011

[1]  S. M. Partridge,et al.  Electrodialysis using ion‐exchange membranes. I. Factors limiting the degree of desalting , 2007 .

[2]  M. Yüksel,et al.  Separation of monovalent and divalent ions from ternary mixtures by electrodialysis , 2006 .

[3]  G. Gohil,et al.  Preparation and characterization of mono-valent ion selective polypyrrole composite ion-exchange membranes , 2006 .

[4]  C. Vandecasteele,et al.  Separation of monovalent and divalent ions from aqueous solution by electrodialysis and nanofiltration. , 2004, Water research.

[5]  M. Yüksel,et al.  Effect of feed characteristics on the separation performances of monovalent and divalent salts by electrodialysis , 2003 .

[6]  J. Hsu,et al.  CURRENT EFFICIENCY OF ION-SELECTIVE MEMBRANES : EFFECTS OF LOCAL ELECTRONEUTRALITY AND DONNAN EQUILIBRIUM , 1997 .

[7]  G. Saracco.  Transport properties of monovalent-ion-permselective membranes , 1997 .

[8]  O. Bobreshova,et al.  Electromembrane systems in conditions of concentration polarization: new developments in the rotating membrane disk method , 1995 .

[9]  G. Saracco,et al.  Ion transport through monovalent-anion-permselective membranes , 1994 .

[10]  José A. Manzanares,et al.  Numerical simulation of the nonequilibrium diffuse double layer in ion-exchange membranes , 1993 .

[11]  S. F. Timashev,et al.  Non-equilibrium processes in the concentration-polarization layers at the membrane/solution interface , 1990 .

[12]  H. Yokoyama,et al.  Temperature Dependence of Conductivities and Ion-Association Constants of Potassium Sulfate in Water , 1989 .

[13]  H. Reiss,et al.  Nonequilibrium effects due to ion transport at the forward biased interface between an electrolyte solution and an infinitely thick ion-exchange membrane , 1983 .

[14]  T. Sata.  Properties of a cation-exchange membrane adsorbed or ion-exchanged with hexadecylpyridinium chloride , 1973 .

[15]  N. W. Rosenberg,et al.  Limiting Currents in Membrane Cells , 1957 .