PRECIPITATE FLOTATION OF CALCIUM SULFITE FROM DILUTE AQUEOUS SOLUTION WITH AN ANIONIC SURFACTANT.

Robert B. Grieges, Dibakar Bhattacharyya, W. Terry Strange

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

Sulfite is precipitated from 2. 5 to 10. 5 multiplied by 10** minus **3 molar aqueous solutions as calcium sulfite, and the precipitate is floated with the strongly basic anionic surfactant, sodium dodecylbenzenesulfonate (NaDBS) over pH 6. 5 to 10. 0. Precipitation results in terms of total soluble sulfite and total soluble calcium are compared with values calculated from the calcium sulfite-calcium sulfate equilibria, taking into account the conversion of about 20% of the feed sulfite concentration into sulfate. Optimum precipitation conditions are pH 8. 6 and a feed calcium to sulfite ratio of 1. 0 to 2. 0.

Original languageEnglish
Pages (from-to)40-45
Number of pages6
JournalAIChE Symposium Series
Volume71
Issue number150
StatePublished - 1975

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)

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