In a city, the chemical formula of biodegradable fraction of municipal solid waste (MSW) is C 100 H 250 O 80 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 3 . Atomic mass: C = 12, H = 1, O = 16, N = 14. C and H are oxidized completely whereas N is converted only into NH 3 during oxidation. For oxidative degradation of 1 tonne of the waste, the required theoretical volume of air (in m 3 /tonne) will be (round off to the nearest integer)

GATE Civil Engineering (CE) 2022 Shift 2 Solved Paper

Question : 43 of 65

Marks: +1, -0

In a city, the chemical formula of biodegradable fraction of municipal solid waste (MSW) is C₁₀₀H₂₅₀O₈₀N. 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/m³. Atomic mass: C = 12, H = 1, O = 16, N = 14.
C and H are oxidized completely whereas N is converted only into NH₃ during oxidation.
For oxidative degradation of 1 tonne of the waste, the required theoretical volume of air (in m³/tonne) will be (round off to the nearest integer)

4749
8025
1418
1092

Validate

Go to Question:

Prev Question

Next Question