Modification of the sorptive characteristics of sugarcane bagasse for removing methylene blue from aqueous solutions

Authors

  • Weber Lara Lima da Silva Universidade Federal de Mato Grosso - UFMT
  • Silze Pires de Oliveira Universidade Federal de Mato Grosso - UFMT

Keywords:

Adsorption, sugarcane bagasse, methylene blue

Abstract

The sugar cane bagasse has been studied as a biosorbent to remove the methylene blue aqueous solution through the batch method. In this study, bagasse was modified by sulphuric acid to enhance sorption capacity. The characterization was made by infrared (FTIR), scanning electron microscopy (SEM) and point of zero charge (pHpzc). The effects of pH and dye concentration on adsorption capacities were studied. Methylene blue uptake was favorable at pH 8,0 for natural bagasse and, pH 10,0 to modified bagasse. The adsorption models of Sips and Temkin showed better affinity with the experimental data of natural and modified bagasse respectively. The maximum adsorption capacity found for the natural bagasse was 31,791 mg g-1 and 38,227 mg g-1 for the modified bagasse.

Author Biographies

Weber Lara Lima da Silva, Universidade Federal de Mato Grosso - UFMT

Químico bacharel graduado pela Universidade Federal de Mato Grosso (2009). Tem experiência na área de Química Analítica e Geoquímica de Minerais e Rochas. Atualmente é mestrando do Programa de Pós-Graduação em Geociências no Departamento de Recursos Minerais da Universidade Federal de Mato Grosso (UFMT). Trabalha com as técnicas de difração de raios-X, fluorescencia de raios-X, espectrofotometria UV-VIS e análises termogravimétricas (TG/DTA) no Laboratório Multiusuários de Técnicas Analíticas (LAMUTA), do Departamento de Recursos Minerais (DRM), da Universidade Federal de Mato Grosso (UFMT).

Silze Pires de Oliveira, Universidade Federal de Mato Grosso - UFMT

Possui graduação em Química Licenciatura Plena pela Universidade Federal de Mato Grosso (2009). Atualmente é mestranda do Programa de Pós-Graduação em Geociências no Departamento de Recursos Minerais da Universidade Federal de Mato Grosso (UFMT).

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Published

2012-10-15

How to Cite

Silva, W. L. L. da, & Oliveira, S. P. de. (2012). Modification of the sorptive characteristics of sugarcane bagasse for removing methylene blue from aqueous solutions. Scientia Plena, 8(9). Retrieved from https://www.scientiaplena.org.br/sp/article/view/831

Issue

Vol. 8 No. 9 (2012): September/Setembro 2012

Section

Articles

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