| Summary: | 碩士 === 中原大學 === 生物環境工程研究所 === 101 === Formaldehyde (HCHO) is a colorless, odor and toxic gases and easy to volatilize. It usually included in the construction and decoration materials. After installation, it will volatilize into environment, enter human body by inhalation. Exposure in such environment for long-term would possibly cause serious health impact. Adsorption is always the main removal strategy for indoor environment, mostly was physical adsorption whose effect is limited. In order to increase HCHO removal efficiency, the adsorbent surface was modified by amine groups and the adsorption process was expected by chemical adsorption. Therefore, this study was aimed to evaluate the HCHO removal efficiency by the amine modified adsorbent.
Three kinds of adsorbent (activated carbon, zeolites and titanium dioxide) and two kinds of amine compound (APTES and EDA) were applied in this study to evaluate the effect of HCHO removal efficiency. The operational parameters included flow rate (250 ml/min, 500 ml/min and 1000 ml/min), adsorbent amounts (0.5 g, 1 g and 2 g) and HCHO concentrations (0.5 ppm, 1 ppm and 2 ppm). The best combination for HCHO removal efficiency is 1 g EDA modified zeolite, 1 ppm HCHO input and 500 ml/min of flow rate for 30 minutes to achieve 98% of HCHO removal efficiency.
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