Electrodialysis of Phosphates in Industrial-Grade Phosphoric Acid
Table 4
Limiting currents of the experimental three-compartment electrodialysis cells; dilute, central compartment: experimental solution; anolyte: 0.01 M HCl; catholyte: 0.01 M NaOH.
Experimental solution
Limiting current (A)
Wet industrial phosphoric acid diluted at 5% (w/w)
indeterminate
Wet industrial phosphoric acid diluted at 1% (w/w)
indeterminate
Solution of 6.27 g/L of NaCl and 54% analytical-grade phosphoric acid diluted at 5% (w/w)
0.20
Solution of 1.254 g/L of NaCl and analytical-grade phosphoric acid diluted at 1% (w/w)
0.15
0.15 A was the average current level during the electrodialysis process.