ADSORPTION OF REACTIVE BLUE 19 DYE IN AQUEOUS SOLUTION BY RED MUD CHEMICALLY TREATED WITH HYDROGEN PEROXIDE

作者：de Souza Kelli Cristina^*; Pereira Antunes Maria Lucia; da Conceicao Fabiano Tomazini

来源：Quimica Nova, 2013, 36(5): 651-656.

• adsorption
• reactive dye
• red mud

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 degrees C (LVQ400) and 500 degrees C (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.

• 出版日期2013