Thermodynamics of the adsorption of different dyes onto bentonite modified with hexadecyltrimethylammonium cation

被引：1

作者：

Zunic, M. ^{[1
]}

Jovic-Jovicic, N. ^{[1
]}

Milutinovic-Nikolic, A. ^{[1
]}

Bankovic, P. ^{[1
]}

Mojovic, Z. ^{[1
]}

Ivanovic-Sasic, A. ^{[1
]}

Jovanovic, D. ^{[1
]}

机构：

[1] Univ Belgrade, Inst Chem Technol & Met, Ctr Catalysis & Chem Engn, Belgrade 11000, Serbia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2013年 / 87卷 / 13期

关键词：

organobentonites; adsorption; dyes; thermodynamics; AQUEOUS-SOLUTIONS; SORPTION; MODELS;

D O I：

10.1134/S0036024413130293

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Removal of two different dyes: Acid Orange 10 (AO10) and Reactive Black 5 (RB5) from their aqueous solutions using organobentonite as adsorbent was investigated. The experiments were carried out at different temperatures (298, 313, 323, and 333 K) in order to obtain thermodynamic parameters for adsorbate/adsorbent system i.e., activation energy, Gibbs free energy, enthalpy and entropy. The results of thermodynamic studies indicated that the adsorption of both dyes onto organobentonite is an endothermic process, while the values for activation energies (76 kJ mol(-1) for AO10 and 51 kJ mol(-1) for RB5) indicated that chemisorption occurred.

引用

页码：2260 / 2263

页数：4

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