Which is more environmentally friendly, electricity, liquefied petroleum gas, ethanol or hydrogen?

It depends on the manufacturing method:

1, ethanol, electricity, hydrogen, compressed natural gas, liquefied petroleum gas

Note: ethanol is prepared by fermentation; Hydrogen is electrolytic hydrogen.

2. Hydrogen, ethanol, electricity, compressed natural gas and liquefied petroleum gas

Note: Hydrogen is solar power generation, and electrolysis of hydrogen and ethanol is fermentation.

3. Electricity, hydrogen, compressed natural gas, liquefied petroleum gas and ethanol

Note: Hydrogen is electrolytic hydrogen and ethanol is synthetic ethanol.

Note: Electricity comes from coal burning, which is not small in pollution, but easy to be comprehensively treated. co2 can not be improperly polluted!

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