| Popis: |
The optimum operating conditions for electrodialysis using a newly developed membrane were studied for recovery of acid from acidic wastewater released from the iron and steel industry. The limiting current densities I lim / S and the current efficiencies η I could be expressed by the following equations, respectively. Furthermore, the concentration of iron(III) ion should be controlled lower than one twentythird of C , since the electric resistance of the cation-exchange membrane was increased considerably by fouling with iron(III) ion. |
