A new wet electrostatic precipitator was designed for removal of fine solid or liquid particulate matter from exhaust gas.

On-stream detention pond system (OSDPS) is a promising technology for polluted river purification and restoration, whose main purification mechanism was particle settlement.

Pulverized coals were burnt in a laboratory-scale drop tube furnace to study the swelling characteristic of char particles and its influence on emission of particulate matter (PM) during combustion.