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.