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in Environmental Engineering by (81.4k points)
Removal of iron from water takes place at a pH of ______

(a) 1.5

(b) 3

(c) 8.2

(d) 9.4

The question was asked in an interview for internship.

Origin of the question is Removal of Iron, Manganese, Colour, Odour and Taste topic in portion Miscellaneous Treatment Methods of Environmental Engineering

1 Answer

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Best answer
Correct choice is (d) 9.4

For explanation: Removal of iron from water takes place at a pH of 8.2. It can be removed in an oxidized condition by softening water by the excess lime process.

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