Basic and Reactive Dye Removal Using Natural and Modified Zeolites

Basic and Reactive Dye Removal Using Natural and Modified Zeolites

The adsorption of the dyes Basic Red 46 (BR46) and Reactive Yellow 176 (RY176) from aqueous solution onto natural and modified zeolites has been investigated. The surfactants cetyltrimethylammonium bromide (CTAB) and hexadecyltrimethylammonium bromide (HDTMA) were used to modify the zeolite surface,...

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Veröffentlicht in:Journal of chemical and engineering data 2007-11, Vol.52 (6), p.2436-2441
Hauptverfasser: Karadag, Dogan, Akgul, Eda, Tok, Sema, Erturk, Ferruh, Kaya, Mehmet Arif, Turan, Mustafa
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Applied sciences
Exact sciences and technology
General purification processes
Pollution
Wastewaters
Water treatment and pollution
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container_end_page 2441
container_issue 6
container_start_page 2436
container_title Journal of chemical and engineering data
container_volume 52
creator Karadag, Dogan
Akgul, Eda
Tok, Sema
Erturk, Ferruh
Kaya, Mehmet Arif
Turan, Mustafa
description The adsorption of the dyes Basic Red 46 (BR46) and Reactive Yellow 176 (RY176) from aqueous solution onto natural and modified zeolites has been investigated. The surfactants cetyltrimethylammonium bromide (CTAB) and hexadecyltrimethylammonium bromide (HDTMA) were used to modify the zeolite surface, and Fourier transform infrared spectroscopy (FTIR) spectral analysis was used to confirm the surface modification. The effects of initial dye concentration, contact time, pH, temperature, ionic strength, and surfactant type on adsorption were studied in a batch system. BR46 adsorption onto natural zeolite increased to minor a extent with increasing pH, whereas pH did not significantly affect RY176 adsorption. Adsorption capacities of dyes increased with contact time, initial concentration, and temperature for both BR46 and RY176. The increase in ionic strength caused a decrease in adsorption of BR46 and an increase in adsorption of RY176. Adsorption of BR46 on natural zeolite is more favorable than RY176 on the CTAB and HDTMA modified zeolites. The adsorption of basic and reactive dyes was spontaneous and endothermic as concluded from thermodynamic assays.
doi_str_mv 10.1021/je7003726
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subjects Applied sciences
Exact sciences and technology
General purification processes
Pollution
Wastewaters
Water treatment and pollution
title Basic and Reactive Dye Removal Using Natural and Modified Zeolites
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