Sorption experiments of Cr(III) onto silica

K. Csobán, M. Párkányi-Berka, P. Joó, Ph Behra

Research output: Contribution to journalConference article

44 Citations (Scopus)

Abstract

The sorption and desorption behaviour of chromium(III) onto amorphous silicagel has been studied for two cases: freshly prepared and aged solutions. We have examined how solution pH, initial Cr(III) concentration, valency and concentration of background electrolyte and the presence of fluoride ion affect these processes. Desorption can be induced by acidification. Applying the same solution conditions, Cr(III) uptake and release are greater from aged solutions. Outer sphere complex formation can be deduced from the great ionic strength dependence at the onset of the sorption.

Original languageEnglish
Pages (from-to)347-364
Number of pages18
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume141
Issue number3
DOIs
Publication statusPublished - Nov 15 1998
EventProceedings of the 1996 7th Conference on Colloid Chemistry in Memoriam to A. Buzagh - Eger, Hung
Duration: Sep 23 1997Sep 26 1997

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Keywords

  • Amorphous silica
  • Chromium(III)
  • Desorption
  • Experiments
  • Fluoride
  • Sorption

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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