What is coal bed methane and what is the advantage to burning it?

What is coal bed methane and what is the advantage to burning it?

• A. Methane from underwater hydrates.
• B. Methane released from natural gas pipelines.
• C. Methane is a by-product of organic decomposition, and it is retrievable.
• D. Methane produced by photosynthesis.

Answer: (C)

Coal bed methane is methane gas contained in coal seams that forms as organic material slowly decomposes and microbial processes generate gas over time. It’s retrievable because coal has pore spaces and fractures that hold the gas, so engineers can pump water from the coal seam to reduce pressure and let the methane flow to the surface where it can be captured. The advantage of burning it is that it provides a usable energy source, turning the captured methane into heat while also reducing its impact as a greenhouse gas. Methane is much more potent than CO2 in trapping heat, so releasing it untreated would be wasteful and harmful; burning it converts it to CO2 and water, releasing energy in the process and lowering the short-term climate impact compared with venting or flaring methane. This description—methane produced from organic decomposition and recoverable from coal beds—best fits what coal bed methane is and why using it as a fuel is beneficial. It’s not methane from underwater hydrates, not from leaks in pipelines, and not produced by photosynthesis.

Coal bed methane is methane gas contained in coal seams that forms as organic material slowly decomposes and microbial processes generate gas over time. It’s retrievable because coal has pore spaces and fractures that hold the gas, so engineers can pump water from the coal seam to reduce pressure and let the methane flow to the surface where it can be captured.

The advantage of burning it is that it provides a usable energy source, turning the captured methane into heat while also reducing its impact as a greenhouse gas. Methane is much more potent than CO2 in trapping heat, so releasing it untreated would be wasteful and harmful; burning it converts it to CO2 and water, releasing energy in the process and lowering the short-term climate impact compared with venting or flaring methane.

This description—methane produced from organic decomposition and recoverable from coal beds—best fits what coal bed methane is and why using it as a fuel is beneficial. It’s not methane from underwater hydrates, not from leaks in pipelines, and not produced by photosynthesis.