Kinetics of Sulfate Desorption from Strongly Acidic Cation-exchange Resin

• Kurisaki Kousuke

  <I>Department of Chemistry, Faculty of Sciences, Kyushu University</I>

• Yoshimura Kazuhisa

  <I>Department of Chemistry, Faculty of Sciences, Kyushu University</I>

Abstract

Although the leaching of sulfate from a strongly acidic cation-exchange resin has been ascribed to the contamination of sulfuric acid in the manufacturing processes, this phenomenon could be related to the hydrolysis reaction of sulfo groups in the resin. The sulfate desorption was an endothermic pseudo-zeroth order reaction. The activation enthalpy, entropy, and free energy were determined using the rate constants observed at different temperatures. The sulfate desorption was remarkably affected by the counter ions in the order of H⁺, Na⁺<Ca²⁺<La³⁺.

Journal

• Journal of Ion Exchange

  Journal of Ion Exchange 18 (4), 158-161, 2007

  Japan Society of Ion Exchange

Keywords

• ion exchanger
• sulfate desorption
• fixed sulfo groups
• hydrolysis
• kinetics
• counter ions

Details

• CRID: 1390001204434908800
• NII Article ID: 130004162410
• DOI: 10.5182/jaie.18.158
• ISSN: 18843360
• ISSN: 0915860X
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed