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(A) Dependence of K2SO4 and KNO3 concentrations on time during production of KNO3 by metathesis electrodialysis (MED) process with 0.6 M K2SO4 and 1.2 M NaNO3 at 1.5 V per cell pair applied potential. (B) Dependence of K2SO4 and KNO3 concentrations on time during production of KNO3 by metathesis electrodialysis (MED) process with 0.6 M K2SO4 and 1.2 M NaNO3 at 2 V per cell pair applied potential.
