A method for the electro-decontamination of spent ion exchange resin contaminated with hematite under dynamic conditions using sulfuric acid solutions has been suggested. It shown that decontamination excludes secondary adsorption radionuclides on ion-exchanger sites. The efficiency this approach compared to control experiments without direct current treatment. positive effect introduction Fe2+...

The deRnition and some characteristic concepts regarding organic ion exchangers are pointed out. The development of these ion exchangers, beginningwith chemically modiRed natural products and continuing with the synthetic ones, is further presented. A classiRcation of organic ion exchangers is proposed according to several criteria, such as the synthesis method, morphology of the three-dimensio...

This paper discusses the methodology used to determine the optimal ion-exchange column size to process all separate batches of feeds from acid mine drainage wastewater. The optimal design ensures the best utilization of resin material and therefore results in a minimum amount of spent resins. Ion exchanger materials have been studied for removing heavy metals from a metal bearing wastes. For th...

ABSTRACT. Polyaniline-tin(IV)molybdophosphate composite exchanger was prepared using sol–gel method by mixing polyaniline gel into the inorganic precipitates of tin(IV)molybdophosphate. The ion characterized various techniques such as XRD, UV-Vis, FTIR, SEM-EDX, and PL. Photocatalytic activities antibacterial efficiencies bare polymer (PANI), tin(IV)molybdophosphate (TMP) polyaniline-tin(IV)mol...

The Na+/Ca2+ exchanger, an ion transport protein, is expressed in the plasma membrane (PM) of virtually all animal cells. It extrudes Ca2+ in parallel with the PM ATP-driven Ca2+ pump. As a reversible transporter, it also mediates Ca2+ entry in parallel with various ion channels. The energy for net Ca2+ transport by the Na+/Ca2+ exchanger and its direction depend on the Na+, Ca2+, and K+ gradie...

Pressure-induced (streaming) potential and membrane potential across two ion-exchanger membranes (one positively charged and another negatively charged) have been measured with the membranes in contact with NaCl solutions at different salt concentrations. Membrane permselectivity was calculated from membrane potential and lower values were obtained for the cation-exchanger membrane. For compari...

Biotechnology and Bioengineering, vol. 25, issued 1983, Boyer et al., “Effect of Chemical Modi?cation of Cellulose on the Activity of a Cellulose from Aspergillus niger”, pp. 1311—1319, see especially pp. 1312 and 1313. “Biochemicals, Organic Compounds for Research and Diag nostic Reagents”, published 1990 by Sigma Chemical Com pany, see p. 1568. Advances in Biochemical Engineering, Biotechnolo...

The Na+/Ca2+ exchanger is an ion transporter that exchanges Na+ and Ca2+ in either Ca2+ efflux or Ca2+ influx mode, depending on membrane potential and transmembrane ion gradients. In arterial smooth muscle cells, the Na+/Ca2+ exchanger is thought to participate in the maintenance of vascular tone by regulating cytosolic Ca2+ concentration. Recent pharmacological and genetic engineering studies...