Examination of the Chitosan Filter to Remove Formaldehyde from Building Materials
Formaldehyde (HCOH) is carcinogenic to human body. Due to some volatile decorating materials and the weather condition, e.g., high temperature and humidity in Taiwan, high level of formaldehyde in indoor air environment occurs frequently. Studies confirmed that chitosan-coated building materials can decomposes formaldehyde. In this study, the HCOH removal efficiency by chitosan-coated filters was examined. With different doses of chitosan (1.56 mg/m2, 3.44 mg/m2, 5.60 mg/m2) sprayed on the filter, the 24-hour HCHO concentration was assessed and then the HCHO removal efficiency under high (2 ppm) and low (0.5 ppm) inlet concentration was evaluated. The HCHO removal efficiency by barely 1 ml water-sprayed filter was also assessed. The results show that under low HCOH concentration, the HCHO removal efficiency by 1.56 mg/m2 chitosan-coated filter was 48.1％, which is a little lower than that under high HCOH concentration. In addition, the HCHO removal efficiency by barely 1 ml water-sprayed filter was 19.1％ and 27.9 ％ under low and high HCOH concentration.
chitosan filter formaldehyde
Huang-Chin Wang Chao-Heng Tseng Sy-Yuan Kang Chung-Chin Yang Yu-Wen Wang
Institute of Environment Engineering and Management, National Taipei University of Technology, Taipei, Taiwan, Republic of China
国际会议
三峡
英文
2372-2374
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）