| 摘要 |
<p>Metal values (generally in ionic form) are extracted from aqueous solutions or suspensions using an extraction medium comprising non-viable cell walls (for example, waste material from yeast extract production), which complex with the metal values. The complexed cell walls are then separated from the aqueous solution or suspension. The extraction medium may be in the form of a slurry, or a flocculent mass comprising the cell walls treated with a chelating agent. The method can be used for extraction of noble metals, or toxic or radioactive metals.</p> |
