What is the term for the removal of ash from emission gases after burning?

The term for the removal of ash from emission gases after burning is particulate removal. This process specifically targets the solid particles, such as ash, that are produced during combustion. Ash and other particulate matter can contribute to air pollution, affecting both air quality and human health. Particulate removal technologies, such as filters or scrubbers, are essential in industrial processes to capture these particles before they are released into the atmosphere.

While other processes, like toxin removal, focus on harmful chemicals or compounds, they do not specifically address the physical removal of solid ash particles, which is primarily what particulate removal encompasses. Therefore, the focus on solid particles in the context of emission control clearly defines this process as particulate removal.