GATE CE 2024 Set 1 — Question 43
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Environmental Engineering → Air Pollution → Incineration
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Question
For assessing the compliance with the emissions standards of incineration plants, a correction needs to be applied to the measured concentrations of air pollutants. The emission standard (based on 11% Oxygen) for HCl is and the measured concentrations of HCl and Oxygen in flue gas are and 13%, respectively.Assuming 21% Oxygen in air, the CORRECT statement is:
Correct answer
(A) No compliance, as the corrected HCl emission is greater than the emission standard.
Solution
To assess compliance, the measured concentration must be corrected to the standard oxygen level (11%) using the following formula:Given:
- Measured concentration
- Standard oxygen level
- Measured oxygen level
- Oxygen in air = 21%
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