<abstract xmlns="http://www.w3.org/1999/xhtml"><p>A spent vanadium catalyst, from the plant of metallurgical type, was leached in a potassium hydroxide solution to recover vanadium. The effect of time, temperature, concentration of basic, catalyst particle size and phase ratio was studied. The results showed that for a 160-750 μm catalyst leached for 4 h at 313.15 K in the presence of 10% potassium hydroxide solution at a liquid: solid ratio of 20:1, the extent of leaching of V was about 87%. Additionally, separation of vanadium from such a solution was investigated by the ion exchange method. Two types of polymer strongly basic ion exchangers were used. The ion exchange tests indicate that vanadium were loaded from the post-leaching solution with high effi ciency. On this basis a fl owsheet for the proposed process of a complex utilization of the spent vanadium catalyst is presented.</p></abstract>

A spent vanadium catalyst, from the plant of metallurgical type, was leached in a potassium hydroxide solution to recover vanadium. The effect of time, temperature, concentration of basic, catalyst particle size and phase ratio was studied. The results showed that for a 160-750 μm catalyst leached for 4 h at 313.15 K in the presence of 10% potassium hydroxide solution at a liquid: solid ratio of 20:1, the extent of leaching of V was about 87%. Additionally, separation of vanadium from such a solution was investigated by the ion exchange method. Two types of polymer strongly basic ion exchangers were used. The ion exchange tests indicate that vanadium were loaded from the post-leaching solution with high effi ciency. On this basis a fl owsheet for the proposed process of a complex utilization of the spent vanadium catalyst is presented.

Method of Utilization of the Spent Vanadium Catalyst

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Method of Utilization of the Spent Vanadium Catalyst"}

A spent vanadium catalyst, from the plant of metallurgical type, was leached in a potassium hydroxide solution to recover vanadium. The effect of time,...

Method of Utilization of the Spent Vanadium Catalyst

Pubblicato online: 17 ott 2018

Pagine: 1 - 7

DOI: https://doi.org/10.2478/pjct-2018-0031

Parole chiave
potassium hydroxide, spent vanadium catalysts, leaching, recovery, ion exchange, vanadium, copper, zinc, arsenic, lead, Amberlite IRA958, Dowex® 1X2

© 2018 Krzysztof Mazurek, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Method of Utilization of the Spent Vanadium Catalyst

Pubblicato online: 17 ott 2018

Pagine: 1 - 7

DOI: https://doi.org/10.2478/pjct-2018-0031

Parole chiavepotassium hydroxide, spent vanadium catalysts, leaching, recovery, ion exchange, vanadium, copper, zinc, arsenic, lead, Amberlite IRA958, Dowex® 1X2

© 2018 Krzysztof Mazurek, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Parole chiave
potassium hydroxide, spent vanadium catalysts, leaching, recovery, ion exchange, vanadium, copper, zinc, arsenic, lead, Amberlite IRA958, Dowex® 1X2