NDLI: Adsorption characteristics of Titan yellow and Congo red on CoFe$_{2}$O$

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Adsorption characteristics of Titan yellow and Congo red on CoFe$_{2}$O$_{4}$ magnetic nanoparticles

Content Provider	Springer Nature Link
Author	Absalan, Ghodratollah Ghaemi, Maryam Sheikhian, Leila
Copyright Year	2014
Abstract	This paper assesses the adsorption characteristics of Titan yellow and Congo red on CoFe$_{2}$O$_{4}$ magnetic nanoparticles. The adsorption behavior of Titan yellow and Congo red from aqueous solution onto CoFe$_{2}$O$_{4}$ magnetic nanoparticles has been determined by investigating the effects of pH, concentration of the dye, amount of adsorbent, contact time, ionic strength and temperature. Experimental results indicated that CoFe$_{2}$O$_{4}$ nanoparticles can remove more than 98 % of each dye under optimum operational conditions of a dosage of 15.0 mg CoFe$_{2}$O$_{4}$, pH 3.0, initial dye concentration of 22–140 mg L$^{−1}$, and contact times of 2.0 and 15.0 min for Congo red and Titan yellow, respectively. Langmuir and Freundlich isotherm models have been used to evaluate the ongoing adsorption kinetic equations. Regeneration of the saturated adsorbent was possible by NaCl/acetone solution as eluent. The maximum adsorption capacities were 200.0 and 212.8 mg dye per gram adsorbent for Congo red and Titan yellow, respectively. With the help of adsorption isotherm, thermodynamic parameters such as free energy, enthalpy and entropy have been calculated. On the basis of pseudo-first-order and pseudo-second-order kinetic equations, different kinetic parameters have been obtained.
Starting Page	1759
Ending Page	1766
Page Count	8
File Format	PDF
ISSN	1735207X
Journal	Journal of the Iranian Chemical Society
Volume Number	11
Issue Number	6
e-ISSN	17352428
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-03-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Analytical Chemistry Congo red Physical Chemistry Titan yellow Adsorption kinetics Biochemistry Inorganic Chemistry CoFe$_{2}$O$_{4}$ nanoparticles Langmuir isotherm Organic Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry

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