AAAR 31st Annual Conference
October 8-12, 2012
Hyatt Regency Minneapolis
Minneapolis, Minnesota, USA
Abstract View
Development of Deodorizing and Sterilizing Filter
YOUNGJIN SEO, Seong Jin Yun, Sang Hyeon Kang, Sun Yong Lee, Gi Chun Lee, Sang Bock Lee, Il Seouk Park, The Environment Technology Institute, Coway Co., Ltd.
Abstract Number: 707 Working Group: Indoor Aerosols
Abstract There has been a research activity whose ultimate goal was to extract all unwanted odors and bacteria out of faecal in a toilet and also to remove them using a novel filter. This paper presents development of a filter module that was comprised of a brush ionizer and balls coated with catalyst materials. The brush and the balls were made of a bundle of carbon fibers and alumina, respectively. Three catalyst materials such as a combination of manganese and phosphorus, ferrum, and ruthenium were experimented. The filter was cylindrical shape and 2 cm in diameter by 5 cm long. The overall size was decided to fit into a toilet seat. The ionizer was prepared in front of the catalyst for the purpose of regeneration of the balls.
Experiments were conducted to evaluate the effect of the filter module on deodorization and sterilization. Three representative gases such as ammonia, hydrogen sulfide, and methyl mercaptane were used to investigate the performance of deodorization. E. coli was used for sterilizing efficiency. A bacillus size of E. coli was approximately 1.5 µm wide by 3.5 µm long. The flow velocity through the filter was approximately 0.75 m/s. Deodorization efficiency was varied upon the catalyst material. A combination of manganese and phosphorus yielded the highest removal efficiency. The efficiency was maintained 100 % for one hour, forty minutes, and ten minutes with ammonia, hydrogen sulfide, and methyl mercaptane, respectively. The catalyst material did not affect on sterilization efficiency. The efficiency was over 99 % for over three hours. These astonishing results were obtained by single-pass experimentation and the novel filter developed here could provide real-time removal of odor and bacteria out of faecal in a toilet.