Adsorção do corante Reativo Azul 19 em solução aquosa por lama vermelha tratada quimicamente com peróxido de hidrogênio

Química Nova

Kelli Cristina De Souza²  Maria Lúcia Pereira Antunes²  Fabiano Tomazini Da Conceição¹ 

[1] ,Universidade Estadual Paulista Departamento de Engenharia Ambiental Sorocaba SP ,Brasil

关键词: adsorption;    reactive dye;    red mud;   

DOI  :  10.1590/S0100-40422013000500007

来源: SciELO

【 摘 要 】

Adsorption of Reactive Blue 19 dye onto activated red mud was investigated. Red mud was treated with hydrogen peroxide (LVQ) and heated at both 400 ºC (LVQ400) and 500 ºC (LVQ500). These samples were characterized by pH, specific surface area, point of zero charge and mineralogical composition. Adsorption was found to be significantly dependent on solution pH, with acidic conditions proving to be the most favorable. The adsorption followed pseudo-second-order kinetics. The Langmuir isotherm was the most appropriate to describe the phenomenon of dye removal using LVQ, LVQ400 and LVQ500, with maximum adsorption capacity of 384.62, 357.14 and 454.54 mg g-1, respectively.

【 授权许可】

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