Sorption of Copper Ions from the Nitric Acid Solution of Electrolytic Refining of Silver with Using Chelating Resin Axionit BPA

Abstract

The article considers a sorption method for extracting copper ions from a model nitric acid solution based on a solution of electrolytic refining of silver with using sorbents with bis-picolylamine functional groups: Dowex M-4195 and AXIONIT BPA. The possibility of extracting copper to residual concentrations in the solution of less than 10 mg/l is shown. The working capacity of both samples under batch conditions, as well as the dynamic exchange capacity and the full dynamic exchange capacity under dynamic сonditions (column test), are determined. The effect of the flow rate of the solution into the column on the kinetics of the sorption of copper ions on AXIONIT BPA is shown. The possibility of desorption of copper with a solution of 3 %, 5 % NH4OH was investigated, and a two-stage scheme of desorption of copper was tested: 5 % and 10 % with a solution of ammonium hydroxide

Characterization and Optimization of Polymeric Bispicolamine Chelating Resin: Performance Evaluation via RSM Using Copper in Acid Liquors as a Model Substrate through Ion Exchange Method

“…Various types of chelating resins are well known and widely used in several applications for water and wastewater treatment plants, especially in industrial estates for removing metals selectively via commercially available ion exchange processes. In recent years, different functional groups of chelating resin were widely used for base metal purification and separation [ 1 ] through the ion exchange process, especially for rare earth elements such as Amberlite XAD-4 (styrene divinyl benzene copolymer) [ 2 ], Dowex-M4195 and Dow-4196 (bis-picolylamine) [ 3 ], Lewatit TP 207 and SIR-300 (iminodiacetate) [ 4 , 5 ], SIR-500 (amino phosphonic) and Dowex XUS43605 (hydroxypropylpicolylamine) [ 6 , 7 ]. These chelating resins were applied for extraction of various metals such as Pb(II)/lead, Cu(II)/copper, Cd(II)/cadmium, Zn(II)/zinc, La(III)/lanthanum, Ni(II)/nickel, Cr(III, IV)/chromium, Fe(II)/iron and Co(II)/cobalt ions [ 8 , 9 ] from aqueous solutions and especially in electronics waste applications at a low pH.…”