Adsorption of acid orange 33 dye by bentonite and surfactant modified bentonite

Research output: Contribution to journalArticle

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Abstract

The batch adsorption of acid orange 33 from water onto Na-bentonite and CTAB-modified bentonite (CTAB-Ben) was studied. The effects of varying factors, such as initial dye concentration, adsorbent dosage, pH, contact time and temperature, which influence the adsorption capacities of Na-bentonite and CTAB-modified bentonite were investigated and discussed. The results revealed that the adsorption capacities of CTAB-modified bentonite toward acid orange 33 were higher than those of Na-bentonite. The maximum adsorption efficiency of CTAB-modified bentonite was 50 mg/g when acid orange 33 concentration, adsorbent dosage, reaction time and equilibrium pH were 50 mg/L, 80 mg, 90 min and 2, respectively. The isotherm study results for CTAB-Ben satisfactorily fit the Langmuir (R2 > 0.959) and Freundlich (R2 > 0.957) models. The calculated values of the thermodynamic parameters ∆G, ∆H and ∆S showed that the adsorption was a spontaneous and endothermic reaction.

Original languageEnglish
Pages (from-to)2383-2388
Number of pages6
JournalAsian Journal of Chemistry
Volume30
Issue number11
DOIs
Publication statusPublished - 1 Jan 2018

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Bentonite
Surface-Active Agents
Coloring Agents
Adsorption
Acids
Adsorbents
Isotherms
cetrimonium
Thermodynamics
Water

Keywords

  • Acid orange 33
  • Bentonite
  • Dye adsorption
  • Surfactant Modified

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Adsorption of acid orange 33 dye by bentonite and surfactant modified bentonite. / Jeeva, Mark; Wan Yaacob, Wan Zuhairi.

In: Asian Journal of Chemistry, Vol. 30, No. 11, 01.01.2018, p. 2383-2388.

Research output: Contribution to journalArticle

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