Application of AlMCM-41 for competitive adsorption of methylene blue and rhodamine B: Thermodynamic and kinetic studies

作者：Eftekhari S; Habibi Yangjeh A^*; Sohrabnezhad Sh

来源：Journal of Hazardous Materials, 2010, 178(1-3): 349-355.

DOI：10.1016/j.jhazmat.2010.01.086

• Competitive adsorption
• AlMCM-41
• Adsorption kinetic
• Adsorption isotherm
• Methylene blue
• Rhodamine B

AlMCM-41 was applied for adsorption of methylene blue (MB) and rhodamine B (RB) in single and binary component systems. In the single component systems. AlMCM-41 represents higher adsorption capacity for MB than RB with the maximal adsorption capacity of 2.08 x 10(-4) and 8.74 x 10(-5) mol/g at 25 degrees C for MB and RB, respectively. In the binary component system, MB and RB exhibit competitive adsorption onto the adsorbent. The adsorption is approximately reduced to 94 and 79% of single component adsorption systems for MB and RB (initial concentration of 8 x 10(-6) M) at 25 degrees C. In single and binary component systems, kinetic and adsorption isotherm studies demonstrate that the data are following pseudo-second-order kinetic model and Langmuir isotherm. Effect of solution pH on the adsorption in single and binary component systems was studied and the results were described by electrostatic interactions.

• 出版日期2010-6-15