Membrane-Based Technology for Air Pollution Treatment

Air pollution is currently one of the biggest global environmental challenges. The rapid increase in environmental awareness led to strict regulations on air pollution control and great development in air filtration or cleaning technologies. The artificial membrane is one of the promising technologies for air filtration due to its high efficiency, low cost, and easy to scale-up. Electro-spun fibrous and micro porous polymeric air filtration membranes have been used to provide high efficiency in pollutant reduction. Fibrous membranes are made up of irregularly spaced micro-fibers or nano-fibers and are being widely used for the removal of fine particles present in aerosols, dust, etc. Similarly micro porous membranes are also being used for the removal of particles present in toxic gases. This paper describes the role of membrane technologies in air pollution control.