Electrodialysis

The integrated system with microfiltration/electrodialysis was proposed for wastewater reclamation. The filterability of metal membrane, membrane fouling reduction by ozonated water and the effect of operational parameters were experimentally investigated. Backwashing by ozonated water showed stable

Performances of electromembrane systems were investigated for removal of the hardness materials in a tap water. Six cells of ED, EDR, and EDIR systems with an electrode area of 12.5 cm ´ 8.0 cm were operated. The results showed scaling formation due to water dissociation on the surface of cation exc

Electromembrane process yields can be enhanced by using pulsed electric field. Electrodialysis experiments carried out on brackish water solutions show that the same level of desalination can be reached faster under pulsed field conditions. A model based on the Nernst–Planck equations is developed t

Boron removal from desalinated seawater is studied. Electrodialysis with improved ionic spacers and modified anion exchange membranes is used for this purpose.

As far as the reduction of the environmental impact of production processes is concerned, the management of liquid wastes of high salinity remains a key point. In this paper, the possibility to use electrodialysis for the improvement of the management of such problematic liquid wastes is investigate

Ni2+ transport in zirconium hydrophosphate containing 85% water was investigated with the electromigration method. An effective diffusion coefficient of Ni2+ was found to reach 1.14×10!11 m2 s!1. It was shown that zirconium hydrophosphate can be used for discontinuous Ni2+ removal from diluted solut

Donnan dialysis with an anion-exchange membrane is proposed as a pretreatment step in a water desalination system. The process replaces anions that cause the precipitation of sediments with neutral chloride anions. Water after Donnan dialysis mainly contains soluble chloride salts that should cause

It was found that the effective diffusion coefficient of Ni2+ in a macroporous strongly acidic cation-exchange resin, which was determined with the electromigration method, depends on acidity and flow rate of the solution. The values of diffusion coefficient were found to be 1.18×10!13-1.9×10!12 m2

Production of soy protein concentrates (SPC)/isolates (SPI) by traditional acidic precipitation, ultrafiltration, electro-acidification and a novel approach combining electro-acidification and ultrafiltration is reviewed. In the context of the development of a combined electro-acidification ultrafil

Trivalent chromium is present at high concentration in effluents from the tanning process in the leather industry. The chromium recycling process must be able to separate chromium from other cations (mainly Na+ but also Ca2+, Mg2+) because their presence has a negative effect on the quality of the t