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In which desalination process, the salt ions are removed from seawater by means of electric current?

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in Environmental Engineering by (81.4k points)
In which desalination process, the salt ions are removed from seawater by means of electric current?

(a) Distillation

(b) Electro-dialysis

(c) Reverse osmosis

(d) Freezing

The question was asked in a job interview.

This question is from Desalination in portion Miscellaneous Treatment Methods of Environmental Engineering

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Correct option is (b) Electro-dialysis

For explanation: In Electro dialysis, the salt ions are removed from seawater by means of electric current where two membranes are used- one who is more selective to anode and another who is more selective to cathode.

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