Rhodium Adsorption on Gallic Acid Resol Resin

• Authors: M. Can
• Languages of publication: EN

Abstracts

EN

A new adsorbent resin has been developed by immobilizing gallic acid with formaldehyde, and its adsorption properties to Rh^{3+} were reviewed with respect to the collection in aqueous solution. Linear and nonlinear regression procedures have been applied to the Langmuir, Freundlich, Tempkin, Dubinin-Radushkevich, and Redlich-Peterson isotherms. The resin exhibited good adsorption capacity towards Rh^{3+} from acidic aqueous solutions ([H^{+}]=1 M, [Cl^{-}]=1 M). The equilibrium adsorption capacity at 293 K was up to 69.43 mg g^{-1}. The adsorption isotherms could be well described by Langmiur equation. The experimental studies suggested that gallic acid formaldehyde resin was effective for the adsorption of Rh^{3+} from chloride acid solutions, and the loaded Rh^{3+} could be easily desorbed from the 1 M HNO₃ + 0.1 M NaClO₃ solution mixture with a hundred percent efficiency. Thermodynamic parameters such as the entropy change, enthalpy change and Gibbs free energy change were calculated. The adsorption of Rh^{3+} was found to be an endothermic adsorption process. This suggested that the resin can be used as an active biosorbent for the recovery of Rh^{3+} from 1 M HCl concentrated acid solution.

Keywords

EN

82.30.Hk

Discipline

• 82.30.Hk: Chemical exchanges (substitution, atom transfer, abstraction, disproportionation, and group exchange)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 4
• Pages: 1301-1307

Dates

published

2015-04

Contributors

author

M. Can

• Vocational School of Arifiye, 54580, Sakarya University, Turkey

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Identifiers

DOI

10.12693/APhysPolA.127.1301