Which one of the following devices is not used for both the absorption as well as the liquidliquid extraction processes ?
Correct answer: D. Wetted wall columns
- A. Packed towers
- B. Plate towers
- C. Spray towers
- D. Wetted wall columns
Explanation
Wetted-wall columns are primarily used to study gas-liquid mass transfer and are not standard contacting equipment for liquid-liquid extraction. Packed, plate, and spray towers can be configured for both absorption and extraction.
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