Sistemas acuosos bifásicos para la extracción de HNO3

Ytzel Quijas-Morales; Diana Laura Navarro-Segura; Diana Fabiola Cholico-González; Mario Ávila-Rodríguez

doi:10.29057/icbi.v11iEspecial.10359

Ytzel Quijas-Morales Universidad de Guanajuato https://orcid.org/0000-0001-6121-166X
Diana Laura Navarro-Segura Universidad de Guanajuato https://orcid.org/0000-0002-1923-0258
Diana Fabiola Cholico-González Universidad Michoacana de San Nicolás de Hidalgo https://orcid.org/0000-0002-7164-0799
Mario Ávila-Rodríguez Universidad de Guanajuato https://orcid.org/0000-0001-8475-2864

DOI: https://doi.org/10.29057/icbi.v11iEspecial.10359

Palabras clave: ácido nítrico, extracción, polietilénglicol, sistemas, acuosos, bifásicos, ácido, nítrico

Resumen

La extracción de especies por sistemas acuosos bifásicos (ATPS) ha sido de gran relevancia en los últimos años debido a que son de fácil operación y que no provocan daños en el medio ambiente. No obstante, al formarse por dos fases ricas en agua representan una gran complejidad para comprender los mecanismos de extracción. Así, este trabajo se enfoca en la evaluación del comportamiento de extracción de HNO₃ en un sistema ATPS formado por 20% p/p Na₂SO₄ y 35% p/p PEG-1000. Se evaluó la estabilidad de las ATPS a diferentes concentraciones de HNO₃ y se determinó el porcentaje de extracción y el coeficiente de distribución de H⁺ y NO₃^- de la fase acuosa a la fase polímero a partir de los cuales se propuso un esquema de extracción.

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