Table 381 Extraction Uses


Recovery of active materials from fermentation broths Purification of vitamin products Chemicals

Separation of olefins and paraffins Separation of structured isomers Metals Industry Copper production Recovery of rare-earth elements Polymer Processing

Recovery of caprolactam for nylon manufacture Separation of catalyst from reaction products Effluent Treatment

Removal of phenol from waste water Recovery of acetic acid from dilute solutions Foods

Decaffeination of coffee and tea Separation of essential oils (flavors and fragrances) Petroleum Lube oil quality improvement

Separation of aromatics and aliphatics (e.g., benzene, toluene, xylenes)

possible to handle by ordinary distillation. Key examples are:

The separation of close-boiling mixtures such as isomers The separation of heat-sensitive materials such as antibiotics

The recovery of nonvolatile components as in extractive metallurgy

The removal of organics from aqueous streams, e.g., phenol removal from wastewater

Table 3.8.1 shows some of the more common industrial extraction processes.

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