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Which method is used for removing hardness?

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+1 vote
in Food Processing Unit Operations by (110k points)
Which method is used for removing hardness?

(a) Nanofiltration

(b) Pervaporation

(c) Electrodialysis

(d) Reverse Osmosis

This question was posed to me by my school principal while I was bunking the class.

My query is from Membrane Separators in chapter Contact Equilibrium Separation Process of Food Processing Unit Operations

1 Answer

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Best answer
Right answer is (a) Nanofiltration

Explanation: Nano filtration is used for removing hardness. It removes organic compounds and selected salts at the lower pressure than RO system. It separates at the molecular level, removing all suspended solids and most dissolved solids.

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