부산대학교 도서관

Background Until now, zone-sterilization was an advanced, mandatory, and expensive technique that was enforced at specialized cleanrooms that need regular sterilization, such as quality control evaluation centers (GMP), pharmaceutical product manufacturing plants, Biosafety Level 3 (BL3) laboratories, medical centers, and other various locations. One of the biggest problems in using large-surface chemical disinfectant at residential indoor locations is that there are many household items such as dishware, clothes, and bedding that may keep residual chemical sterilants, which may become dangerous to the respiratory system, skin, and even the eyes at exposure. Due to these reasons, after the initial disinfection using chemical disinfectant, a second cleaning step for the residual chemical sterilants is needed. Method This study developed a 60-liter chamber constructed to simulate the real-world environment in order to gauge a zonesterilizing device’s elimination capability. An aerosol generator aerosolized 2mL of pathogenic solution into the chamber for a given amount of time while the filtration module was on. Nine square petri dishes were attached to the inner surfaces of the chamber to collect surface-level pathogens, and an air-sampler with a gelatin filter was used to collect airborne pathogens. This study performed this experiment with both a commercial HEPA filter module and an air-passable plasma filter module, the latter which was developed for this study. Result This study developed the APF (Air-passable Plasma Filter) which is able to inactivate airborne pathogens and pathogens that can survive on indoor surfaces. We expect the '60-liter chamber' to become the most optimal and stable chamber model distributed commercially that can experiment with airborne pathogens. Conclusion The APF (Air Plasma Filter) and '60-liter chamber' developed for this study is expected to become the most stable and optimized commercialization chamber model that can experiment with airborne pathogens, and a next-generation air cleaning device.