europe and asia  emit most of the soot from burning coal, wood, dung, and diesel in open  fires or without particulate filters in stoves, chimneys, smokestacks,  and exhaust pipes.
europe and asia  emit most of the soot from burning coal, wood, dung, and diesel in open  fires or without particulate filters in stoves, chimneys, smokestacks,  and exhaust pipes.
diesel particulate filter:0
diesel particulate filter
a diesel particulate filter (dpf) is a device designed to remove diesel particulate matter or soot from the exhaust gas of a diesel engine.