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 language | English |
|---|---|
| Pages (from-to) | 40-45 |
| Number of pages | 6 |
| Journal | AIChE Symposium Series |
| Volume | 71 |
| Issue number | 150 |
| State | Published - 1975 |
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering