A development of an indoor air purification system with an integrated filtration stages for reducing ultrafine particle concentration

Air pollution occurs when the air is mixed with contaminant substances in a high concentration. Air pollution can happen to both outdoor and indoor due to human activities and anthropogenic sources, such as printing, cooking, cleaning, smoking, and outside pollution that is carried away inside. One kind of air pollution substance is PMs or particulate matter. PMs can be found as coarse, fine, and ultrafine particles. Especially for the ultrafine particles, this type of PMs has a diameter of less than 0.1 µm. Ultrafine particles may enter the systemic circulation and affected child development. An air purifier is one of the methods to improve indoor air quality. Hence, this study aims to design a purification system of indoor PM0.1emission using an integrated filter consisting of activated carbon, a HEPA, an electrostatic filter, and an ionizer filter. The study used three different sources, such as cigarette smoke, mosquito coil, and insect repellent. These emissions were injected into an exposure chamber with a constant volume of 937.000 cm3, At the same time, the ultrafine concentrations before and after being purified were measured using a TSI P- Trak Ultrafine Particle Counter model 8525. The system works well to reduce ultrafine particles with the efficiency of 98 ± 1 % and CADR 29500 ± 35 cm3/s, respectively.