Application of Al<inf>2</inf>O<inf>3</inf>modified sulfate tailings (CaFe-Cake and SuFe) for efficient removal of cyanide ions from mine process water
MetadataShow full item record
© 2018 Elsevier Ltd A novel approach for the management of solid and liquid wastes of mining was implemented in this work. Unmodified and modified metallurgical solid wastes, sulfate tailings, were used as adsorbents for the removal of cyanide ions from synthetic mine process water. Energy dispersive X-ray fluorescence (ED-XRF), scanning electron microscopy (SEM) and nitrogen adsorption methods, based on Brunauer-Emmett-Teller (BET) theory, were used for analysis of composition, structure and surface area of the adsorbents. A wet-granulation method was used for preparation of granules from sorbent powders with polyvinyl acetate as a binder and the further modification of the sorbent surface was carried out by atomic layer deposition (ALD) of Al 2 O 3 . The granules were used for the removal of cyanide ions from synthetic solutions by batch adsorption method. ALD-modified sorbent showed approximately 3.5 mmol g -1 adsorption capacity for cyanide ions. The adsorption isotherm was fitted with Langmuir and Freundlich adsorption models. The cyanide ions on the modified sorbent surface is enabled to form a stable and non-toxic cyanide complex in the solution, which can be reused as the complexing agent in the metallurgical industries.
Showing items related by title, author, creator and subject.
The Adsorption and Elution of Platinum Group Metals (Pt, Pd, and Au) from Cyanide Leach Solutions using Activated CarbonSnyders, C.; Mpinga, C.; Bradshaw, S.; Akdogan, G.; Eksteen, Jacques (2013)This paper investigates the recovery of platinum group metals (PGMs) from a dilute cyanide leach solution containing base metals, in a manner similar to that used for gold extraction in a typical CIP process, and focuses ...
The application of activated carbon for the adsorption and elution of platinum group metals from dilute cyanide leach solutionsSnyders, C.; Mpinga, C.; Bradshaw, S.; Akdogan, G.; Eksteen, Jacques (2013)The research presented in this paper investigated the practical aspects of the recovery of platinum group metals (PGMs) from a dilute cyanide leach solution containing base metals, in a manner similar to that used for ...
Minju, N.; Nair, Balagopal; Peer Mohamed, A.; Ananthakumar, S. (2017)Carbon dioxide adsorption capacities of amine modified sol-gel SiO2 mesospheres were evaluated. The sorbents were prepared from readily available sodium metasilicate via sol-gel process. Three amines were used for surface ...