Perspective Sorbents Based on Zeolite Modified with Nanostructures for the Purification of Aqueous Media from Organic Impurities

Pleiades Publishing Ltd - Tập 13 - Trang 327-330 - 2018
A. E. Kucherova1, I. N. Shubin1, T. V. Pas’ko1
1Tambov State Technical University, Tambov, Russia

Tóm tắt

The efficiency of zeolite modified with nanostructures (carbon nanotubes) has been studied upon removing anionic organic dye (methyl orange)—sodium 4-(4-dimethylaminophenylazo) benzenesulfonate)— from aqueous media. For quantitative characteristics of the sorption properties of the studied material, the experimental data are analyzed in the linearization coordinates of empirical Langmuir, Temkin, and Dubinin–Radushkevich equations at temperatures of 303, 313, and 323 K. The data correspond best to the following order of adsorption isotherms based on the correlation coefficient: Dubinin–Radushkevich > Temkin > Langmuir. It has been found that adsorption of sodium 4-(4-dimethylaminophenylazo) benzenesulfonate on zeolite, modified with nanostructures is a spontaneous endothermic process. The possibility of a significant increase in the adsorption capacity of zeolites by their volumetric modification by nanostructures is shown. According to the experimentally determined value of the sorption capacity, the studied modified zeolite is 2–5 times higher than the analogs.

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