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年度	113	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	國立中山大學	申請系所	環境工程研究所
專案主持人	彭彥彬	職等/職稱	教授
專案中文名稱	新型綠色高鐵酸鉀緩釋藥錠處理地下水三氯乙烯污染物之研究
中文關鍵字	三氯乙烯、高鐵酸鉀、羥丙基甲基纖維素、高鐵酸鉀緩釋型藥錠、釋高鐵酸鹽化學氧化技術
專案英文名稱	Evaluation of novel sustained-release potassium ferrate tablet for trichloroethylene removal in groundwater
英文關鍵字	Trichloroethylene; potassium ferrate; hydroxypropyl methylcellulose; sustained-release potassium ferrate tablet; ferrate-releasing chemical oxidation
執行金額
執行期間	2024/12/1 至 2025/11/30
計畫中文摘要	由於三氯乙烯(TCE)對於環境及人體皆具有很大之危害性且難以處理，必須開發環境友善且可以有效處理 TCE 之土壤以及地下水整治技術。本研究以濕式氧化法製備PF，並利用羥丙基甲基纖維素(HPMC)作為黏合劑包覆PF，透過手動式油壓機製備高鐵酸鉀緩釋型藥錠(SRPFT)，並透過緩釋實驗探討 SRPFT 之最佳設計參數。最後以釋高鐵酸鹽化學氧化技術(FRCO)搭配批次以及管柱實驗去除水中 TCE，並進行成本效益評估。研究結果顯示，濕式氧化法製備PF之最佳溫度為30℃。此外，鑑定PF以及HPMC的物化特性。緩釋實驗結果顯示，製備SRPFT之可行參數包括PF/HPMC 質量比為1.0 (wt/wt)、壓錠力為1.39 × 108 N/m2、PF 劑量為1 g以及單顆SRPFT。TCE批次去除實驗結果顯示，SRPFT於初始pH 4.1、5.8 以及 9.2 之 TCE 水溶液下，TCE 之去除效率分別為100%、65%以及43%。此外，SRPFT 去除TCE過程中，增加溶液之酸度有助於提升17%之TCE去除效率。TCE管柱去除實驗結果顯示，於1 mL/min以及5 mL/min之流量下，TCE最大去除效率分別為63.8%以及25.2%，且TCE去除總量分別為9.6 μg以及18.1 μg。SRPFT於TCE水溶液中，透過侵蝕、水合、膨脹以及擴散作用釋放PF以氧化TCE。本研究製備PF以及SRPFT之成本分別約為新台幣400元/g以及新台幣417元/顆，雖然目前PF之成本相較於傳統氧化劑之成本高，但PF為一種多功能綠色藥劑，可去除多種污染物且反應後僅產生三價鐵以及羥基，不會造成金屬離子溶出、土壤酸化以及毒性副產物產生等問題，對環境非常友善且不會造成二次污染。因此本研究開發綠色之FRCO技術，提供受含氯有機物污染之土壤以及地下水整治作參考。
計畫英文摘要	Trichloroethylene (TCE) is harmful to the ecosystem and difficult to remove. Therefore, it is necessary to develop an eco-friendly and efficient technology for TCE removal. In this study, potassium ferrate (PF), prepared by wet oxidation method, was encapsulated by hydroxypropyl methylcellulose (HPMC) as a binder to fabricate a sustained-release potassium ferrate tablet (SRPFT) by manual hydraulic pellet press. The feasible parameters of SRPFT were investigated by release experiments. TCE was removed by the ferrate-releasing chemical oxidation (FRCO) technology in the batch and column experiments. The results showed that the optimal temperature of PF preparation was 30℃. Moreover, the physical and chemical properties of PF and HPMC were characterized. The results of SRPFT release experiments showed that the feasible parameters of SRPFT fabrication, consisting of a PF/HPMC mass ratio of 1.0 (wt/wt), a manufacturing pressure of 1.39 × 108 N/m2, a PF dosage of 1 g, and a single CRPFT tablet. In the TCE batch removal experiments by SRPFT, the removal efficiency of TCE at initial pH 4.1, 5.8, and 9.2 were 100%, 65%, and 43%, respectively. In addition, the TCE removal efficiency increased 17% after increasing the acidity of solution. In the TCE column removal experiments by SRPFT, the maximum removal efficiency of TCE were 63.8% and 25.2% under flow rate of 1 and 5 mL/min, respectively. Furthermore, the total amount of TCE removal were 9.6 and 18.1 μg under flow rate of 1 and 5 mL/min, respectively. TCE was removed by PF released from SRPFT through hydration, swelling, diffusion, and erosion. Moreover, the cost of PF and SRPFT were NT$400/g and NT$417/tablet, respectively. Despite the cost of PF is higher than that of traditional oxidants, PF, a multifunctional and green agent, can remove a variety of pollutants. It only produces trivalent iron and hydroxyl groups after PF reaction, which will not cause the metal ion dissolution, soil acidification, and formation of toxic by-products. Therefore, this study provides an eco-friendly technology of FRCO for the remediation of organochlorine-contaminated soil and groundwater.