在光電半導體產業的快速發展下，有機溶劑的需求量日益增加，有機汙染物排放量增多造成環境的污染，在水資源逐漸缺少情況下，目前發展低成本高效率的水回用處理系統是循環經濟的重要課題。
本研究利用錳改質之二氧化鈦溶膠，以含浸法將二氧化鈦鍍於陶瓷基材上，並結合UV/H2O2/O3氧化程序來降解水中低濃度異丙醇，並探討反應參數(過氧化氫濃度、氣體流量、觸媒含量、金屬元素改質)對去除效率的影響。進一步以X光繞射儀、掃描式電子顯微鏡、紫外-可見光光譜儀與螢光光譜儀對觸媒材料進行分析，以確認改質後物化特性與反應活性之關聯性。
實驗結果顯示，應用Mn-TiO2/H2O2/O3的批次反應器中，可將30ppm異丙醇在60分鐘內達成99.9%之礦化率，並進一步應用填充床反應器來模擬實場處理情況，在滯留時間30與60分鐘下，可穩定達到99.9%之異丙醇降解率及70.6%、64.0%之礦化率。因此，本系統可以做為實際反應器設計的參考，應用於高科技產業之水回用系統。

The demand of organic solvents is increasing gradually due to the ever-expanding optoelectronic and semiconductor industries, resulting in the increase in discharge of organic pollutants. The lack of water resources promotes the development of low-cost and high-efficiency water-recovery system, which is an important issue in the circular economy.
In this work, the photocatalytic ceramic filter was prepared by using the Mn-containing titania sol via impregnation process. It was applied in the degradation of low-concentration isopropanol (IPA) in water with combining UV/H2O2/O3 oxidation processes. The effect of operating parameters, such as concentration of hydrogen peroxide, gas flow rate, catalyst content, manganese- modification, on reaction rate was discussed, respectively. The manganese species on the TiO2 surface, evidenced from X-ray diffractometry (XRD), scanning electron microscope (SEM), UV-VIS spectroscopy, and fluorescence spectrometer (PL), was inferred as an important factor for the increase in mineralization rate of IPA.
Finally, the 99.9% of mineralization for 30ppm IPA was achieved after 60 min in a batch reactor, equipped with Mn-TiO2/H2O2/O3 system. A packed bed was further designed for degradation of IPA-containing water, which was applied to simulate the field condition. The conversion of IPA was higher than 99.9% both in the retention time of 30 and 60 min. The mineralization ratios were 70.6% and 64.0%, respectively. The system can be used as a reference for the filed design, which can be applied to recycle water in high tech industries.

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