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年度	105	專案性質	實驗性質
專案類別	研究專案	研究主題	整治
申請機構	國立屏東科技大學	申請系所	環境工程與科學系
專案主持人	陳冠中	職等/職稱	教授
專案中文名稱	光觸媒覆膜光纖集束(COFB)光催化地下水中三氯乙烯之現地綠色整治技術開發
中文關鍵字	光催化、光纖、三氯乙烯、現地整治、透水性反應牆
專案英文名稱	Development of in-situ green remediation technology for trichloroethylene contaminated groundwater using photocatalysts coated optical fiber bundle (COFB)
英文關鍵字	photocatalysis, optical fiber, trichloroethylene, in-situ remediation, permeable reactive barrier
執行金額	840,000元
執行期間	2015/11/17 至 2016/11/16
計畫中文摘要	本研究以新穎之光催化覆膜光纖集束(COFB)反應牆(permeable reactive barrier, PRB)系統處理地下水中之三氯乙烯(TCE)，探討採用多支光纖集束，在不同操作條件下，處理系統應用於模擬土壤箱中，對於TCE去除效率之影響。研究首先使用20W LED搭配電源模組作為實驗之光源，並使用POF建立光纖集束透水性反應牆於模擬土壤箱中，用以設置實驗之處理系統。實驗將先利用對氯苯甲酸(pCBA)作為氫氧自由基之探針(probe)，評估使用直徑2 mm光纖應用於光降解COFB處理程序之氫氧自由基轉換濃度(ROH,UV)。研究第一階段選用3種直徑之光纖(2 mm、6 mm、14 mm)，在相同光纖支數(1支)或是不同支數但是總直徑相當之光纖集束(2 mm 7支、6 mm 3支、14 mm 1支)應用於光降解系統，探討其對於去除TCE效果之影響。此外，後續(第二階段)之研究選用TiO2作為光觸媒，並使用市售之小型噴槍在簡便之操作條件下製備TiO2覆膜光纖，評估PRB處理系統對於模擬土壤箱中TCE之去除效果。場發式電子顯微鏡(field-emission scanning electron microscopy, FE-SEM)以及擴散反射光譜儀(spectrophotometer with diffuse reflectance spectra, DRS)等設備將用於觀察覆膜光纖使用前後之表面變化和計算光觸媒能隙(energy gap)。
計畫英文摘要	A novel photocatalytic coated-optical-fiber bundle (COFB) installed in a permeable reactive barrier (PRB) system is used in this study to treat trichloroethylene (TCE) in simulated groundwater. The effects of various operating conditions on the removal of TCE by using a multiple optical fiber bundle in a soil box are investigated. A 20W light-emitting diode (LED) with power module is used as the light source of the system as well as using POF to build the PRB in a soil box. The para-chlorobenzoic acid (pCBA) was used as a probe of the hydroxyl radicals to evaluate the converted concentration of hydroxyl radicals during photodegradation of pCBA in the system by using an optical fiber with 2 mm diameters. In the first stage of study, optical fibers with 3 different diameters (2 mm, 6 mm and 14 mm) were used in the PRB system. The effects of 1 optical fiber with different dimeters or different number of optical fibers with the same bundle diameter, which was 14 mm when using 7 2mm fibers, 3 6 mm fibers and 1 14 mm fiber, on the removal of TCE were investigated, respectively. Furthermore, in the following second stage of our study, titanium dioxide (TiO2) nano powders will be use as photocatalysts. A commercially available small spray gun will be used to spray TiO2 on optical fibers to prepare coated optical fibers, which will be used in PRB system to evaluate the effects of system on the TCE removal efficiency in the soil box. A field emission scanning electron microscopy (FE-SEM) and a spectrophotometer with diffuse reflectance spectra (DRS) will be used to observe the surface of coated optical fibers before and after experiments and to calculate the energy gap of photocatalysts.