Orbital - Vol. 7 No. 4 - October-December 2015
FULL PAPERS

Estudo da Cinética da Sorção de Cromo Hexavalente por Biomassa Fúngica de Aspergillus ochraceus

PDF
  • Laion Mairton Costa Sá,
  • José Fábio França Orlanda
Laion Mairton Costa Sá
Universidade Estadual do Maranhão, Centro de Estudos Superiores de Imperatriz (CESI-UEMA)
José Fábio França Orlanda
Universidade Estadual do Maranhão, Centro de Estudos Superiores de Imperatriz (CESI-UEMA)
Published December 31, 2015
Keywords
  • toxic metals,
  • Cr(VI),
  • Aspergillus ochraceus,
  • biosorption
How to Cite
(1)
Costa Sá, L. M.; Orlanda, J. F. F. Estudo Da Cinética Da Sorção De Cromo Hexavalente Por Biomassa Fúngica De Aspergillus Ochraceus. Orbital: Electron. J. Chem. 2015, 7, 382-390.

Copyright (c) 2015 Orbital: The Electronic Journal of Chemistry

Creative Commons License

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

Abstract

In this study we evaluated the ability of sorption of fungal biomass of Aspergillus ochraceus removal of hexavalent chromium in aqueous medium. The experiments were performed at pH 2 contact time 72 hours, 100 mg of fungal biomass and the equilibrium concentration ranging from 5,0 to 50,0 mg L-1. The results showed that the Freundlich model set to the best experimental data showing high coefficient of Freundlich (Kf = 486,2) and favorably 1/n value, indicating a very high sorption capacity. The biomass showed the presence of polysaccharides, hydroxylated groups, carboxylate and amino able to positively influence the kinetics of biosorption as this may increase the contact surface of the biomass with the molecule of Cr(VI). The results showed that biomass of Aspergillus ochraceus has the potential to be used in industrial wastewater treatment systems.

DOI: http://dx.doi.org/10.17807/orbital.v7i4.727

PDF