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For removal of iron from water ________ mg of oxygen is required.

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+1 vote
in Environmental Engineering by (81.4k points)
For removal of iron from water ________  mg of oxygen is required.

(a) 0.14

(b) 0.50

(c) 1

(d) 1.5

The question was posed to me in exam.

Query is from Removal of Iron, Manganese, Colour, Odour and Taste topic in division Miscellaneous Treatment Methods of Environmental Engineering

1 Answer

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Best answer
Right choice is (a) 0.14

Best explanation: The reaction for removal of iron from water is – 4Fe + O2 + 10H2O = 4Fe (OH)3 + 8H

1mg of Fe requires 0.14 mg of O2.

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