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

2015; FUNDAÇÃO UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; Volume: 7; Issue: 2 Linguagem: Inglês

10.17807/orbital.v7i2.622

ISSN

1984-6428

Autores

Carlos Alexandre Holanda, Janílson Lima Souza, Clayane C. Santos, Hildo Antônio dos Santos Silva, Sirlane Aparecida Abreu Santana, Maria Célia Pires Costa, Mário Sérgio Schultz, Cícero Wellington Brito Bezerra,

Tópico(s)

Water Quality Monitoring and Analysis

Resumo

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 HNO 3 , 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 (ΔH ads , ΔS ads and ΔG ads ) 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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