Sorption of palladium (II) chloride complexes on weakly, intermediate and strongly basic anion exchangers

Enhancement of adsorption ability of calcium alginate gel beads towards Pd(II) ion. A kinetic and equilibrium study on hybrid Laponite and Montmorillonite–alginate gel beads

“…The dangerousness of palladium, together with the increasing of its worldwide demand and price, justify the efforts to find an effective removal/recovery method for the metal released in surface and groundwaters, as well as waste waters (Hubicki and Leszczynska, 2005;Zereini and Alt, 2006). Different technologies for the removal/recovery of precious metals from different matrices (industrial wastes, aqueous solutions, various materials) are proposed in the literature, consisting in adsorption processes on active carbon or biomass, solvent extraction, electrodeposition, electrolytic recovery, ionic exchange, chemical precipitation, and filtration by suitable membranes (Bratskaya et al, 2009;Chand et al, 2009;Hubicki and Leszczynska, 2005;Hubicki et al, 2008;Liu et al, 2009;Nikoloski et al, 2015;Park and Fray, 2009;Volesky, 2003;Wang and Chen, 2009;Zuo et al, 1996).…”

“…Different technologies for the removal/recovery of precious metals from different matrices (industrial wastes, aqueous solutions, various materials) are proposed in the literature, consisting in adsorption processes on active carbon or biomass, solvent extraction, electrodeposition, electrolytic recovery, ionic exchange, chemical precipitation, and filtration by suitable membranes (Bratskaya et al, 2009;Chand et al, 2009;Hubicki and Leszczynska, 2005;Hubicki et al, 2008;Liu et al, 2009;Nikoloski et al, 2015;Park and Fray, 2009;Volesky, 2003;Wang and Chen, 2009;Zuo et al, 1996). Among these techniques, the most promising in terms of operating costs and ease of use appears to be the adsorption by organic (algae, fungi, bacteria, wastes from fruits and other agriculture products or fishes, etc.)…”

Studies of removal of palladium(II) ions from chloride solutions on weakly and strongly basic anion exchangers

“…Numerous anion-exchange resins for palladium(II) ions are known [13,14]. They are characterized by high selectivity and high ion-exchange capacities for noble metal ions.…”

Ion exchange recovery of palladium (II) from nitrate weak acidic solutions

“…One of the most promising methods for recovery of platinum group metals (in particular, of palladium) is sorption, characterized by high efficiency and selectivity [1,[3][4][5]. However, the majority of investigations devoted to the sorption recovery of palladium, deal with chloride or sulfate solutions [6][7][8][9][10][11][12][13][14], and the studies of sorption of noble metals from nitric acidic media are rather limited [1,[15][16][17][18][19][20]. At the same time, the recovery of palladium from some kinds of secondary sources (e.g.…”