Abstract
Acid-base couple extractants extract sulfuric acid and zinc sulfate efficiently, selectively and reversibly. Their properties allowed development of a new, solvent extraction process for treating zinc electrowinning waste streams. In this process, about 95% of the sulfuric acid and 95% of the zinc can be recovered at concentrations high enough to be directly recycled to zinc production. Lime consumption and gypsum formation are substantially reduced. Only one extractant is used in the process, and zinc is recovered as zinc sulfate.
| Original language | English |
|---|---|
| Pages (from-to) | 209-222 |
| Number of pages | 14 |
| Journal | Solvent Extraction and Ion Exchange |
| Volume | 8 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1990 |
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