GATE CE 2022 CE Q43: Municipal Solid Wastes

In a city, the chemical formula of biodegradable fraction of municipal solid waste (MSW) is C

N. The waste has to be treated by forced-aeration composting process for which air requirement has to be estimated.

Assume oxygen in air (by weight) = 23 %, and density of air = 1.3 kg/m

. Atomic mass: C = 12, H = 1, O = 16, N = 14.

C and H are oxidized completely whereas N is converted only into NH

during oxidation.

For oxidative degradation of 1 tonne of the waste, the required theoretical volume of air (in m

/tonne) will be (round off to the nearest integer)

Your answerChoose one option.

749

825

1418

1092

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