The use of electrohydrolysis for the recovery of sulphuric acid from copper-containing solutions

An overview of the recovery of acid from spent acidic solutions from steel and electroplating industries

“…Cifuentes et al [102][103][104] carried out researches on the application of electro-dialysis to CuSO 4 -H 2 SO 4 based solution and also on the thermodynamic modelling of said electrolyte [105][106][107]. Cifuentes et al [108] used two lab scale electro-dialysis (EH) cells to study the effectiveness of this method in the recovery of sulphuric acid from copper containing electrolytes such as those present in copper electrorefining. Winniewski et al [109] studied the acid and base purification via bipolar electro-dialysis.…”

Recovery of H2SO4 from an acid leach solution by diffusion dialysis

“…Several methods other than direct neutralization have been developed for the recovery of sulfuric acid and other acids from industrial wastes and these include distillation [4,5], solvent extraction [6,7], ion exchange techniques [8], electrohydrolysis [9,10] and diffusion dialysis [11,12]. The diffusion dialysis is an attractive acid recovery method because it is characterized by high proton permeability and strong salts rejection [13][14][15].…”

Sulfuric acid recovery from acid mine drainage by means of electrodialysis

“…bipolar ED, electro-electrodialysis or distinct ED configurations) have been effectively used to recover sulfuric acid from various industrial wastewaters, such as nuclear decontamination effluents or rinsing waters used in metal electrorefining operations [8][9][10]. However, in the particular case of iron-containing AMD solutions, the speciation of iron entails the presence of various ionic species of different charge and mobility [1], thus adding a further complexity in the interpretation of the mechanisms of ionic transport through ion-exchange membranes.…”