Equilibrium studies of the adsorption of aromatic disulfonates by Mg–Al oxide

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Abstract

The removal of m-benzenedisulfonate (BDS2−) and 2,6-naphthalenedisulfonate (NDS2−) anions by Mg–Al oxide was investigated. Langmuir model best describes the adsorption of both aromatic disulfonate anions, with the maximum amount of uptake higher for BDS2−. Mg–Al oxide reacts easier with the aromatic disulfonate anion with higher charge density, a trend that is the opposite of that observed in aromatic sulfonate anions. After increasing the charge from −1 to −2, the removal of aromatic disulfonates by Mg–Al oxide is controlled by electrostatic interactions, instead of hydrophobic interactions that are dominant for aromatic sulfonate anions.

Original languageEnglish
Pages (from-to)129-132
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Volume114
DOIs
Publication statusPublished - 2018 Mar

Keywords

  • A: Inorganic compounds
  • B: Chemical synthesis

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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