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The Use of Ion Exchange in the Recovery of Vanadium from the Mass of a Spent Catalyst Used in the Oxidation of SO2 to SO3

Drużyński S., Mazurek K., Białowicz K.

Polish Journal of Chemical Technology

2014

Vol. 16, nr 2

69--73

In the studies on the recovery of vanadium from vanadium catalyst extracts, three types of polymer strongly acidic ion exchangers were used. The ion exchange resins differed in terms of granularity and their ion exchange capacity. As a result, breakthrough curves were made for three main components of the test extract, i.e.: ions of vanadium, iron and potassium. On this basis the optimum conditions for the removal of iron ions from the solution were defined and the technological concept of the process in the semi-technical scale was proposed.

Leaching of vanadium(V) from the mixture after potassium metavanadate synthesis based on KCl and spent vanadium catalyst

Kiełkowska U., Białowicz K., Drużyński S.

Polish Journal of Chemical Technology

2013

Vol. 15, nr 4

33-35

The results of the leaching of vanadium(V) from the mixture after potassium metavanadate synthesis from KCl and spent vanadium catalyst in the presence of steam were presented. Spent vanadium catalyst was obtained from the waste storage of a chemical plant producing sulfuric acid(VI) by the contact method. The reaction mixture was leached using different solutions: 1 M Na2CO3, 20% CO(NH2)2, 15% NaOH, 15% KOH, 2 M H2SO4. The effect of time and temperature was studied. The results showed that for reaction mixture leached for 4 h at 303 K in the presence of 15% sodium hydroxide solution at a liquid:solid ratio of 10:1, the extent of leaching of vanadium(V) was 95.43%.