The use of Compressed Natural Gas (CNG) in automobiles has reduced pollution in cities primarily because CNG is a cleaner-burning fuel compared to traditional petrol and diesel. Here are the key ways CNG helps reduce pollution:
- Lower Emissions of Harmful Pollutants: CNG combustion produces significantly less carbon monoxide (CO), nitrogen oxides (NOx), particulate matter (PM), sulfur oxides (SOx), and volatile organic compounds (VOCs) than petrol and diesel. These pollutants are major contributors to urban air pollution and respiratory diseases
- Reduced Greenhouse Gas Emissions: Vehicles running on CNG emit 5-10% less carbon dioxide (CO2) than comparable gasoline vehicles, helping mitigate climate change by lowering greenhouse gas emissions
- No Sulfur Content: CNG is sulfur-free, so it does not produce sulfur dioxide, which causes acid rain and respiratory problems
- Cleaner Combustion: CNG burns more completely, leaving no residue and producing fewer unburnt carbon particles, which helps improve overall air quality
- Real-World Impact: Cities that have adopted CNG for public transport and municipal fleets, such as New York, Los Angeles, Stockholm, and Vancouver, have observed noticeable improvements in air quality and reductions in respiratory health issues among residents
In summary, by switching to CNG, cities reduce the emission of toxic pollutants and greenhouse gases from vehicles, leading to cleaner air and better public health outcomes
