Linear and non-linear regression procedures have been applied to the Langmuir, Freundlich, Tempkin, Dubinin–Radushkevich, and Redlich–Peterson isotherms for adsorption of acid yellow 132 (AY132) dye onto red pine (Pinus resinosa) sawdust. The effects of parameters such as particle size, stirring rate, contact time, dye concentration, adsorption dose, pH, and temperature were investigated, and interaction was characterized by Fourier transform infrared spectroscopy and field emission scanning electron microscope. The non-linear method of the Langmuir isotherm equation was found to be the best fitting model to the equilibrium data. The maximum monolayer adsorption capacity was found as 79.5 mg/g. The calculated thermodynamic results suggested that AY132 adsorption onto red pine sawdust was an exothermic, physisorption, and spontaneous process. Kinetics was analyzed by four different kinetic equations using non-linear regression analysis. The pseudo-second-order equation provides the best fit with experimental data.
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Research Article|
April 10 2015
Equilibrium, kinetics and process design of acid yellow 132 adsorption onto red pine sawdust Available to Purchase
Mustafa Can
1Sakarya University, Vocational School of Arifiye, Fatih Mah. Eşit Sok No. 7/A, 54580 Sakarya, Turkey
E-mail: [email protected]
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Water Sci Technol (2015) 71 (12): 1901–1911.
Article history
Received:
January 18 2015
Accepted:
March 23 2015
Citation
Mustafa Can; Equilibrium, kinetics and process design of acid yellow 132 adsorption onto red pine sawdust. Water Sci Technol 1 June 2015; 71 (12): 1901–1911. doi: https://doi.org/10.2166/wst.2015.164
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