| Summary: | 碩士 === 雲林科技大學 === 環境與安全工程系碩士班 === 98 === Hybrid catalysts with cuprous oxide (1, 3, 5, 30, 50 wt%) using zeolite-supported were made and the effect of treating indoor bioaerosols was studied by using these hybrid catalysts with a column system with various flow rate.
The XRD results were indicated that the suitable condition for preparing these hybrid catalysts was dried at 105℃ avoiding oxidation of cuprous oxide and energy-saving. The efficiencies of treating bacteria and fungi aerosols by 90 g of zeolite were 80% and 91% moreover they increased to 94% and 96%, respectively when cuprous oxide added 3 wt% into zeolite becoming hybrid catalyst. In addition, the indoor environmental quality was batter than the suggestion value of EPA-Taiwan. The efficiencies of treating bacteria and fungi aerosols were 90%, 74% and 87%, 72% at 28.3 lpm and 60 lpm respectively using 1 wt% of Cu2O/zeolite as a hybrid catalyst. The results showed that residence time reduced and the efficiencies decreased as flow rate of treating was increased.
In durability experiments, five days and two replicates were carried out. After five days treating, the efficiencies of bacteria and fungi aerosols reached 72%and 93%, respectively. However, the proportion of respirable bioaerosols was more than 69% after treating with hybrid catalysts and it suggested that the modified hybrid catalysts with higher removal efficiencies of respirable bioaerosol should be studied.
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