| Title of Article |
Role of Cetyltrimethyl ammonium bromide on Enhanced Adsorption and Removal of Alizarin Red S using Amino-functionalized Graphene Oxide. |
| Date of Acceptance |
26 October 2017 |
| Journal |
| Title of Journal |
Oriental Journal of Chemistry |
| Standard |
ISI |
| Institute of Journal |
Oriental Scientific Publishing Company |
| ISBN/ISSN |
0970-020 X |
| Volume |
2017 |
| Issue |
33 |
| Month |
|
| Year of Publication |
2017 |
| Page |
2920-2929 |
| Abstract |
This research was aimed to study the adsorption capacity and removal of alizarin Red S (ARS) dye using amino-functionalized graphene oxide (NH2-GO) as an adsorbent in the presence of CTAB. The optimum conditions were consisted of 100 mg/L initial concentration of ARS with 0.015 g adsorbent at solution pH 2.0. The adsorption equilibrium was completely reached within 60 min. at 28°C. The maximum adsorption capacity of NH2-GO for ARS in the presence of CTAB (0.6 mM) was 135.1 mg/g, about three times higher than that of NH2-GO (42.0 mg/g) in the absence of CTAB. The adsorption kinetics well fitted using a pseudo second-order kinetic model. The intraparticle diffusion model obtained clearly defined its rate limiting step. Changes in free energy, enthalpy and entropy were also evaluated. The overall adsorption process was endothermic reaction. The adsorption isotherm for NH2-GO in the presence of CTAB better fit with Langmuirn model. It is, therefore, evident that the synergic effect of CTAB enhances the adsorption capacity and removal of ARS via their electrostatic interactions among the three reacting components in the adsorption reaction system. |
| Keyword |
Cetyltrimethyl ammonium bromide, Adsorption isotherm, Alizarin Red s, Aminofunctionalized graphene oxide, Kinetics, Thermodynamics. |
| Author |
|
| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
false |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Publication
Journal Publication
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