Lanthanum leachate concentration from spent catalysts

Abstract:

Spent catalysts generate leachates that cause very serious environmental problems. This study shows the evaluation of the influence of applying a base to the leach recovered from an exhausted catalyst obtained from the "Esmeraldas State Refinery" in Ecuador. The main goal was to increase the percent concentration by mass of lanthanum and in turn reduce the concentration of aluminum through its precipitation. The agent used was 4.0 and 5.0 M sodium hydroxide and the pH was adjusted to stimulate the precipitation. Results show that the agent used is a precipitator of aluminum since the concentration of lanthanum increased up to 44%. The use of metal hydroxides in leachates is a valid alternative for the removal of heavy metals in order to prevent the contamination of the environment.

Año de publicación:

2019

Keywords:

Fuente:

scopus