In the context of proposals to the use of hydrogen - enriched CNG (H-CNG) as fuel for buses in public transpor

Question

In the context of proposals to the use of hydrogen - enriched CNG (H-CNG) as fuel for buses in public transport, consider the following statements:
1. The main advantage of the use of H-CNG is the elimination of carbon monoxide emissions.
2. H-CNG as fuel reduces carbon dioxide and hydrocarbon emissions.
3. Hydrogen up to one -fifth by volume can be blended with CNG as fuel for buses.
4. H-CNG makes the fuel less expensive than CNG.
Which of the statements given above is/are correct?

Accepted Answer

Hydrogen-enriched CNG (H-CNG) offers environmental benefits by reducing emissions of pollutants like carbon monoxide, carbon dioxide, and hydrocarbons compared to traditional CNG. This improvement is attributed to the higher combustion efficiency of hydrogen. Typically, hydrogen is blended with CNG in proportions up to 20% by volume. While H-CNG can lead to emission reductions, its current cost of production and blending infrastructure often makes it more expensive than standard CNG.