Donnan dialysis

The removal of nitrate ions through SB-6407 and Neosepta AMX anion exchange membranes has been studied under Donnan dialysis conditions as a function of receiver phase concentration and co-existence anions in the feed phase. For both membranes, it was observed that the transport of nitrate increased

This study first illustrates the IEMB potential for the simultaneous removal of nitrate, perchlorate and bromate from drinking water. The removal of each of these pollutants to concentrations below the recommended levels for drinking water was successfully achieved. The initial development of the IE

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

The removal of fluoride from diluted solution with Neosepta AHA anion exchange membrane has been studied by Donnan dialysis. The effects of concentration, pH, and accompanying anion on feed phase and receiving phase composition were investigated. Neosepta AHA anion exchange membrane was used for the

The removal of low molecular mass charged compounds from water streams in an ion exchange membrane bioreactor (IEMB) was studied. This integrated membrane process combines continuous ion exchange transport (Donnan dialysis) of the pollutant through a non-porous membrane, selective for the transport

This paper first presents a set of experimental data on the measurements of the ionic fluxes through a cationexchange membrane separating two electrolyte solutions with the same concentration, the same co-ion but different counter-ions (bi-ionic system). Then these results are compared with the theo

Donnan Dialysis is an adequate process to recover metals from dilute solutions, however, when the enrichment is needed, the osmosis phenomenon occurs and reduces the efficiency of the operation. Moreover, a lot of ion exchange membranes are so far from the ideal permselectivity. In this work, the co