Adsorption of polythionates and thiosulfate on strong base anion exchange resins
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Thiosulfate leaching is an alternative process to cyanidation for recovering gold from ores. Resin in pulp has been suggested as a possible operation for the recovery of gold from the thiosulfate leach solutions. The aim of this work is to investigate the adsorption of polythionates and thiosulfate on strong based anion exchange resins, as they are the competing species for the adsorption of gold. The kinetics of thiosulfate, trithionate and tetrathionate load is first order, approaching equilibrium. The equilibrium constants for the adsorption reactions were obtained using the experimental data. The use of the rate constants and equilibrium constants for adsorption allows the resin in pulp process to be effectively modelled.
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Oraby, Elsayed A. (2009)Nowadays, keeping mining and the environment sustainable is a major concern all over the world. Using toxic chemicals such as cyanide and mercury in the gold leaching process is one of the main factors that need to be ...
Muslim, Abrar (2010)Increasing environmental concerns over the use of cyanide for gold recovery has intensified the need to deeply understand gold thiosulfate leaching system. Therefore, experimental and modelling work for the kinetics and ...
Kinetics and Equilibrium Models for the Adsorption of Thiosulfate and Polythionates onto Strong Base Anion Exchange Resin in Batch SystemMuslim, Abrar (2009)Kinetic and equilibrium models for the isotherm adsorption of thiosulfate and polyhionate on resin have been developed using mechanistic approach. The models can be used to predict amount of species adsorbed on resin over ...