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In which desalination process, solar energy is used?

(a) Reverse osmosis

(b) Freezing

(c) Electro-dialysis

(d) Solar evaporation

This question was posed to me in an interview.

My question is based upon Desalination topic in chapter Miscellaneous Treatment Methods of Environmental Engineering

1 Answer

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Best answer
Right choice is (d) Solar evaporation

To elaborate: In the solar evaporation, the solar energy is used as a source of heat energy. The solar energy striking the earth is estimated to be a 250BTU / day/m^2.

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