SciELO - Scientific Electronic Library Online

 
vol.37 issue1Effect of blasting on the structural performance of houses near mining sites in ColombiaBiosorption of zinc and cadmium by pre-treated inactive bacteria author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO

Share


Minería y Geología

On-line version ISSN 1993-8012

Abstract

PERDOMO-GOMEZ, Laura Ailin et al. Recovery by acid leaching of vanadium contained in spent catalysts. Min. Geol. [online]. 2021, vol.37, n.1, pp.74-89.  Epub Mar 31, 2021. ISSN 1993-8012.

In the production of sulfuric acid by the contact method, catalysts with more than 4 % vanadium pentoxide are used, which go out of service once they are completely exhausted. In the present work, the recovery, by acid leaching, of the vanadium contained in exhausted catalysts from the Patricio Lumumba Factory was evaluated. A full factorial design of experiments was carried out (23) where the following were analyzed as independent variables: temperature, solid/liquid ratio and sulfuric acid concentration and as dependent variables: vanadium concentration and leaching performance. The processing allowed obtaining a liquid phase composed of the sulfates of the metals leached with sulfuric acid, which have vanadium concentrations between 1,448 mg/l and 3,730 mg/l. The evaluated processing allows, from the liquid phase obtained, recovering the vanadium for its industrial use, where the solid waste generated is not polluting, which is favorable for the protection of the environment.

Keywords : exhausted catalysts; acid leaching; sulfuric acid; vanadium recovery.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )