Defatted Jojoba for the removal of methylene blue from aqueous solution: Thermodynamic and kinetic studies

被引：41

作者：

Al-Anber, Zaid Ahmed ^{[1
,3
]}

Al-Anber, Mohammed A. ^{[2
]}

Matouq, Mohammad ^{[3
]}

Al-Ayed, Omar ^{[3
]}

Omari, Nasser M. ^{[1
]}

机构：

[1] Jordan Univ Sci & Technol, Dept Chem Engn, Fac Engn, Irbid 22110, Jordan

[2] Mutah Univ, Dept Chem Sci, Al Karak 61710, Jordan

[3] Al Balqa Univ BAU, Dept Chem Engn, Fac Engn Technol, Amman 11131, Jordan

来源：

DESALINATION | 2011年 / 276卷 / 1-3期

关键词：

Jojoba; Methylene blue; Pseudo-second order; Kinetic model; Langmuir isotherm; Adsorption; BASIC DYE; BATCH ADSORPTION; DEGRADATION; EQUILIBRIUM; IRON(III); SORPTION; SORBENT; CARBONS; COLOR; ACID;

D O I：

10.1016/j.desal.2011.03.043

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The removal of the methylene blue from aqueous water by adsorption with defatted Jojoba has been studied in a batch operation mode. The percentages removal of dye increases with increasing contact time, Jojoba dosage and temperature achieving the equilibrium at 40 min. The maximum removal (80% approx.) has been achieved at 50 degrees C, 0.8 g/50 mL of Jojoba dosage, 200 mg/L initial concentration of MB and the pH range between 6.2 and 6.8. The dynamic isotherm has been successfully modeled by the Langmuir with R-2=0.98. The negative thermodynamic parameters Delta G (-14.4, -15.4, -16.8) at 25, 35, 40 and 50 degrees C, respectively indicate spontaneous adsorption. The pseudo-second order kinetic model is much more reasonable for MB adsorption process. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：169 / 174

页数：6

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