Studies of extractive removal of silver(I) from chloride solutions

Abstract

Abstract. For efficient recovery of silver(I) from chloride solutions, amine extractants were used. The effect of the type of diluent, extractant and chloride concentration, contact time and reextraction were studied. It was found that the best diluent for this process was xylene. Extraction of silver depended on concentration of hydrochloric acid, sodium chloride and extractant and additionally on the contact time. Reextraction of Ag(I) ions from the loaded organic phase showed that it can be removed only little using NH3 H2O, NaOH, NH4NO3, and NaNO3 as the stripping agents.

Studies on the separation of some transition metals using trialkylimidazole as selective extractant

“…Several extractants have been proposed for separation of Cu(II), Zn(II), and Cd(II) from aqueous solutions, e.g., carboxylic acids [10], derivatives of phosphinic acid [11], derivatives of acid amides, trioctylamine [11], alkylphenylamines [12], complex oximes [13], crown ethers [14][15][16] derivatives of ketones [17][18][19][20], derivatives of pyridine [21,22], as well as alkyl derivatives of imidazole [6,[23][24][25] and quaternary ammonium salt [26].…”

The uptake of silver(I) from chloride solutions by amine extractants

“…However, the usage of solvent extrication for recovering silver from solutions after chloride leaching, where the feed was a remain from atmospheric leaching of the concentrate from ZWR Lublin, was previously described in a scientific work only with the usage of three amines [14]. In order to broaden the perspective of the process of recovering silver from chloride solutions containing over 4 M chloride ions, the below examination was presented.…”