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2015 | 127 | 4 | 1301-1307
Article title

Rhodium Adsorption on Gallic Acid Resol Resin

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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.
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EN
Publisher

Year
Volume
127
Issue
4
Pages
1301-1307
Physical description
Dates
published
2015-04
Contributors
author
  • Vocational School of Arifiye, 54580, Sakarya University, Turkey
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv127n4123kz
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