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Evaluación del porcentaje de níquel recuperado proveniente de catalizador agotado del cracking de petróleo mediante lixiviación asistida por ultrasonido

Authors: Zevallos Torres, Luis Alberto;

Evaluación del porcentaje de níquel recuperado proveniente de catalizador agotado del cracking de petróleo mediante lixiviación asistida por ultrasonido

Abstract

El presente trabajo tuvo como objetivo evaluar el porcentaje de níquel recuperado proveniente de catalizador agotado del cracking de petróleo de la refinería de Talara-Piura mediante lixiviación asistida por ultrasonido utilizando 3 diferentes ácidos orgánicos como: tartárico, cítrico y oxálico; a concentraciones de 1,0 y 2,0 M, temperaturas de 25 y 70’C, con un tiempo de lixiviación constante de 3 horas para todos los experimentos. El análisis estadístico sobre la influencia de las variables independientes: concentración de ácido, temperatura y la aplicación de ultrasonido, sobre el porcentaje de recuperación de níquel, indican que tanto la temperatura como la aplicación de ultrasonido son los factores que más influencia tienen sobre la variable dependiente; siendo la primera la que posee mayor influencia de ambos. Por otro lado, los resultados del análisis cuantitativo del porcentaje de recuperación de níquel, utilizando diferentes ácidos, muestran que el ácido oxálico, a condiciones de: concentración 1,0 mol/L, temperatura de 70’C y la aplicación de ultrasonido a una frecuencia fija de 40KHz por 3 horas fue el que obtuvo el mayor porcentaje de recuperación de 24,92% aproximadamente. El estudio permite concluir que los ácidos orgánicos tienen potencial para la hacer una lixiviación de metales de una manera ambientalmente amigable.

The aim of this project was to evaluate the recovery percentage of Ni from a spent catalyst used in hydrocarbon cracking in Talara Refinery in Piura using ultrasound lixiviation with 3 different organic acids such as tartaric, citric and oxalic acid. The acids concentrations used were 1,0 and 2,0 mol/L, the temperatures were set at 25 and 70’C, and a constant lixiviation time of 3 hours was used for all the experiments. The statistical analysis about the influence of the independent variables (acid concentration, temperature and use of ultrasound) on the recovery percentage of Ni shows that both temperature and use of ultrasound are the factors that have more influence on the dependant variable; where the temperature is he factor that has much more influence of both. On the other hand, the quantitative analysis results of the recovery percentage of Ni, using different acids, show that oxalic acid 1,0 M at 70’C and with ultrasound application at 40 KHz for 3 hours had the biggest recovery percentage of 24,92% approximately. This study allows us to conclude that organic acids have a potential to lixiviate metals in an environmentally friendly way.

Keywords

Níquel, Lixiviación, Cracking de petróleo, Ácidos orgánicos, Ácido oxálico

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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