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年度	110	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	國立暨南國際大學	申請系所	土木工程學系
專案主持人	陳谷汎	職等/職稱	特聘教授
專案中文名稱	以新穎循環再生型吸附劑處理砷污染地下水
中文關鍵字	砷、地下水、螯合型碳材、重金屬回收、循環經濟
專案英文名稱	Treatment of arsenic-contaminated groundwater using novel recyclable adsorbents
英文關鍵字	Arsenic, groundwater, chelated carbon, heavy metal recovery, circular economy
執行金額	1,010,000元
執行期間	2021/1/1 至 2021/11/30
計畫中文摘要	本研究以氧化鐵/氧化鋁結合於螯合型碳材表面，評估5種含鐵/鋁複合材在處理含砷地下水之效能。實驗結果顯示，3號材料對砷之去除效果最佳，2號及5號材料亦可移除水中之砷，當吸附材料劑量提高時，對三價砷的去除效率也越高。吸附材對砷之去除符合擬二階反應動力學模式，顯示吸附材對砷之去除機制為化學吸附。等溫吸附實驗結果顯示，Langmuir model對吸附材去除砷具有良好的模擬結果，屬單層吸附作用。各材料在15-35 ℃溫度範圍內，對砷之去除效率雖有不同，但差異皆於5-10%範圍內，顯示本研究所選用之材料適合於一般環境溫度下應用。桶槽實驗結果顯示，3號及5號吸附材料對富砷地下水具有良好之處理效果，最大砷去除率分別為93及99%。本計畫藉由實驗室批次實驗及桶槽實驗證實，所選用之吸附劑對富砷地下水有良好之處理效果，未來可應用於現場富砷地下水之處理。
計畫英文摘要	In this study, arsenic-contaminated groundwater was treated using 5 types of chelated carbon modified by iron and aluminum oxides. The results showed that No. 3 material had the best performance for arsenic removal. No. 2 and No. 5 materials also had the ability to treat arsenic. Arsenic removal increased with increasing dosage of adsorbent. The adsorption kinetics and isotherms revealed the better fits of reactions to Langmuir isotherm and pseudo-second-order kinetic model, indicating the inclination towards monolayer adsorption and chemisorption of arsenic on the adsorbents. Arsenic removal by the adsorbents had a difference ranging from 5 to 10% within 15 to 35℃, which indicates that the selected materials can be applied under ambient temperature. The removal of arsenic by No. 3 and No. 5 materials in the tank test using real groundwater samples reached 93 and 99%, respectively, demonstrating a good performance of the adsorbents for the treatment of arsenic-contaminated groundwater. The adsorbents used in this study can be applied to remediate arsenic-contaminated groundwater in the future.