Electrodialysis

An electrodialysis process was employed to investigate the concentration of formic, acetic and propionic acid solutions under different experimental conditions. In this process interpolymer-type ion-exchange membranes were used due their high chemical stability and durability. The effects of concent

For long-term space missions, the algae Arthrospira platensis (previously Spirulina platensis) can be used as a food component. A. platensis can be cultured in a Zarrouk medium (further called “medium”) which contains several salts. As a result, the cultured cells have to be washed to make them edib

Diester manufacturing plants produce large quantities of glycerol solutions. Their economic development requires sodium sulfate elimination to obtain glycerol rates over 80% of the initial content. Conventional electrodialysis (ED) and bipolar electrodialysis (BED) were investigated for their perfor

With the aid of atomic absorption, a systematical and analytical evaluation method called Taguchi’s quality engineering has been applied for the separation of copper ions from a solution using a laboratory electrodialysis set-up to evaluate the optimal experimental conditions and hence to achieve th

The Seawater Desalination by an Autonomous Wind Energy System (SDAWES) project was developed to produce a natural scarce resource (fresh water) by the use of a natural, renewable resource (wind energy). The basic concept consists in the connection of three kinds of desalination systems: reverse osmo

Transport competition between the protons and the alkyl metal cations Li+, Na+, K+ and Cs+ across a cationexchange membrane (CEM), called CMH, was studied in terms of an electrodialysis process with three different configurations: water/water (W/W), solvent/water (S/W) and solvent/solvent (S/S). Und

The present work investigated the separation properties through monovalent-ion-permselective membranes (Neosepta CMX-S, ACS) in electrodialysis. An experimental study for desalting single electrolytes, binary and ternary mixtures, was carried out. Results showed that divalent-ion rejection takes pla

The reuse of water coming from electrolysis manufactory effluents is studied by means of the electrodeionisation technique. A neutral water stream which contains small quantities of zinc, copper, cadmium and lead is treated. Results obtained by electrodialysis and ion exchange by resins are presente

We report the results of experiments conducted under the well known ACS ED membrane, using the membrane potential technique, in order to obtain the transference numbers of Na+ and Br! before and after lengthy filtration studies using brackish waters from France and Senegal. With a change of the Br!

Lead is a highly toxic heavy metal, found in water and air, which should be treated. Lead removal from wastewater is an important problem in battery industries. The separation process by means of electrodialysis (ED) shows several advantages such as highly selective desalination, high water recovery