Orbital - Vol. 7 No. 2 - April-June 2015
FULL PAPERS

Remoção do Corante Têxtil Turquesa de Remazol Empregando Aguapé (Eichhornia crassipes) como Adsorvente

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  • Carlos Alexandre Holanda,
  • Janilson Lima Souza,
  • Clayane Carvalho dos Santos,
  • Hildo Antônio dos Santos Silva,
  • Sirlane Aparecida Abreu Santana,
  • Maria Célia Pires Costa,
  • Mario Sergio Schultz,
  • Cícero Wellington Brito Bezerra
Carlos Alexandre Holanda
Departamento de Química, Universidade Federal do Maranhão
Janilson Lima Souza
Departamento de Química, Universidade Federal do Maranhão
Clayane Carvalho dos Santos
Departamento de Química, Universidade Federal do Maranhão
Hildo Antônio dos Santos Silva
Departamento de Química, Universidade Federal do Maranhão
Sirlane Aparecida Abreu Santana
Departamento de Química, Universidade Federal do Maranhão
Maria Célia Pires Costa
Departamento de Química e Biologia, Universidade Estadual do Maranhão
Mario Sergio Schultz
Núcleo em Ecologia e Desenvolvimento Sócio-Ambiental, Universidade Federal de Macaé
Cícero Wellington Brito Bezerra
Departamento de Química, Universidade Federal do Maranhão
Published June 26, 2015
Keywords
  • adsorption,
  • water hyacinth,
  • remazol turquoise,
  • textile dye
How to Cite
(1)
Holanda, C. A.; Souza, J. L.; dos Santos, C. C.; dos Santos Silva, H. A.; Santana, S. A. A.; Costa, M. C. P.; Schultz, M. S.; Bezerra, C. W. B. Remoção Do Corante Têxtil Turquesa De Remazol Empregando Aguapé (Eichhornia Crassipes) Como Adsorvente. Orbital: Electron. J. Chem. 2015, 7, 141-154.

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

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Abstract

In this work, the efficient removal of Remazol Turquoise textile dye onto water hyacinth (Eichhornia crassipes) from aqueous solutions was investigated by batch method. The water hyacinth was collected, washed, dried, crushed and treated with a 0.25 mol L-1 HNO3, at 50 °C and by 24 h. Parameters such as pHpzc, pH effect, contact time and temperature were considered. The kinetic and adsorption data were analyzed by using the Lagergren, Ho, Zeldowitsch (Elovich), and Weber-Morris models, and Langmuir, Freundlich, Tempkin, Redlich-Peterson, Sips and multilayers isotherm models, respectively. The best fitting modeling were Ho (50 mg L-1), Elovich (1000 mg L-1) and Sips. The thermodynamic parameters (ΔHads, ΔSads and ΔGads) and desorption tests showed that adsorption mechanism is dependent on several adsorbate/surface interactions.

DOI: http://dx.doi.org/10.17807/orbital.v7i2.622

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