Growth of gypsum II. Incorporation of cadmium

Geert-Jan Witkamp*, G. M. van Rosmalen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The cadmium uptake in gypsum has been investigated using the techniques of constant composition, simple precipitation and continuous crystallization. The partition coefficient D increases from (4-8)×10-3 at low supersaturations σ to 5x10-3 at a σ equal to 1.5. D is slightly higher in solutions with a higher electrolyte (NaNO3) concentration, partly due to a higher activity coefficient of Cd2+. A higher temperature also results in a higher uptake. From adsorption experiments it follows that the affinity of Cd2+ to SO2-4 at the crystal surface is not larger than for Cd2+ to SO2-4 in the solution.

Original languageEnglish (US)
Pages (from-to)89-98
Number of pages10
JournalJournal of Crystal Growth
Volume108
Issue number1-2
DOIs
StatePublished - Jan 2 1991

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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