How can coal be made cleaner?

Transform coal into gas. Warm the coal and release steam.

Coal can be made cleaner through various technologies and processes such as:

1. Coal washing: Removes impurities like sulfur and ash, improving its quality.
2. Fluidized bed combustion: Burns coal at lower temperatures, reducing nitrogen oxide emissions.
3. Integrated gasification combined cycle (IGCC): Converts coal into gas, allowing for easier capture of pollutants.
4. Carbon capture and storage (CCS): Captures carbon dioxide emissions and stores them underground to prevent their release into the atmosphere.
5. Coal gasification: Converts coal into a cleaner-burning gas, reducing emissions of sulfur dioxide, nitrogen oxides, and mercury.
6. Advanced combustion technologies: Utilizes high-efficiency combustion methods to reduce emissions of pollutants.
7. Upgrading power plants: Retrofitting older coal-fired power plants with modern pollution control technologies to decrease emissions.