Heat sensitive materials can be concentrated in an evaporator employing_______________?
Correct answer: A. Vacuum
- A. Vacuum
- B. High pressure
- C. High residence time
- D. None of these
Explanation
Vacuum evaporation lowers the boiling temperature, allowing concentration at a lower thermal load and reducing damage to heat-sensitive materials. High pressure raises the boiling temperature, while long residence time increases degradation risk.
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