Comparison of Removal Efficiency of Formaldehyde by Chlorine Dioxide, Photocatalyst and Active Carbon

Abstract:

In order to find out the real treatment efficacy of common used formaldehyde-removal product. Comparison study was conducted at different reaction time and dosages in 5L glass-made device using photocatalyst, active carbon and chlorine dioxide, respectively. The results showed that all the three methods can remove formaldehyde effectively. Photocatalyst and chlorine dioxide react with formaldehyde more quickly. As to 1.0 mg/m³ formaldehyde, using more than 0.3mL photocatalyst or 30mg/L chlorine dioxide for 30min is suitable, while 2mg/L and 18h is needed by active carbon.

• Periodical: Applied Mechanics and Materials (Volume 723)
• Pages: 648-651
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.723.648
• Online since: January 2015
• Authors: Ming Song Wu*, Xin Yang Xu, Xun Xu, Xue Ting Wang, Xia Ting Zhao, Miao Pei, Xiao Hui Ma, Ming Ze Wang, Fei Wang, Jia Xi Li
• Keywords: Active Carbon, Chlorine Dioxide, Formaldehyde, Indoor Air Treatment, Photocatalyst

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