What is the environmental impact of hydrogen production from fossil fuels?

What is the environmental impact of hydrogen production from fossil fuels?

• A. It reduces the environmental benefits of hydrogen fuel cells due to associated carbon emissions.
• B. It eliminates all emissions.
• C. It increases water pollution only.
• D. It makes hydrogen production cheaper with no downsides.

Answer: (A)

Hydrogen’s clean use hinges on lifecycle emissions. When hydrogen is produced from fossil fuels—such as via steam methane reforming or coal gasification—the process releases CO2 and other pollutants. Unless carbon capture and storage is used, those emissions erase part of the environmental advantage that hydrogen fuel cells offer at the point of use (they emit only water). There can also be methane leaks and energy losses that add to the footprint. So the environmental impact is that producing hydrogen from fossil fuels reduces the overall environmental benefits of hydrogen energy. The other statements either imply zero or only water pollution, or claim there are no downsides, which isn’t accurate.

Hydrogen’s clean use hinges on lifecycle emissions. When hydrogen is produced from fossil fuels—such as via steam methane reforming or coal gasification—the process releases CO2 and other pollutants. Unless carbon capture and storage is used, those emissions erase part of the environmental advantage that hydrogen fuel cells offer at the point of use (they emit only water). There can also be methane leaks and energy losses that add to the footprint. So the environmental impact is that producing hydrogen from fossil fuels reduces the overall environmental benefits of hydrogen energy. The other statements either imply zero or only water pollution, or claim there are no downsides, which isn’t accurate.