Draw the pattern of gas generation in a typical landfill, Chemistry

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Question:

a) List, with appropriate justifications, the most significant design parameters while constructing a landfill

b) Draw the pattern of gas generation in a typical landfill and indicate the different phases.

c) Using the Landgem model of Q =∑ 2KMLoe-kt where Q yearly methane generation rate at time t after solid waste placement in m3 per yr
M Solid waste placed t years before present in landfill

k First order rate constant in yr-1

Lo Potential methane generation capacity of the msw in m3 per ton

t Time since start of gas generation

Determine the peak gas production during the first year for a landfill receiving 167000 tons per year. The landfill gas constant is 0.0307 yr-1 and the methane generation potential is 140 m3/tonne.


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