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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	淡江大學學校財團法人淡江大學	申請系所	水資源及環境工程學系
專案主持人	彭晴玉	職等/職稱	副教授
專案中文名稱	稻殼活性碳應用於系統整治含鎳地下水
中文關鍵字	流動電極電容去離子, 稻殼活性碳, 地下水, 鎳
專案英文名稱	Application of Rice Husk Activated Carbons to Flow-electrode Capacitive Deionizaiton System for Nickel Remediation in Groundwater
英文關鍵字	flow-electrode capacitive deionizaiton, rice husk activated carbon, groundwater,nickel
執行金額	630,000元
執行期間	2024/12/1 至 2025/11/30
計畫中文摘要	本研究以新穎的流動電極電容去離子系統(Flow-Electrode Capacitive Deionization, FCDI)應用於整治地下水之鎳污染。流動電極電容去離子(FCDI)是目前最新穎的電容去離子(Capacitive Deionization, CDI)系統，去除離子的機制與CDI一樣，即透過電吸附將陰陽離子分離，並儲存於電極材料的電雙層中。 研究選用兩種流動電極材料：活性碳(AC)或以農業廢棄物-稻殼製備成的稻殼活性碳(RHAC)應用於FCDI系統；以1 wt% AC操作FCDI系統處理300 mg/L Ni2+時，擁有最佳的平均脫鹽速率(ASRR=5.46·10-5 mmol Ni/cm2/min)、充電效率(104.66%)與最低的能源消耗(6.16·10-5 kWh/mmol)。以1 wt% RHAC應用於FCDI系統時，雖然稻殼活性碳系統之平均脫鹽速率(ASRR)表現略低(4.9·10-5 mmol/cm²/min)，但擁有更優異的充電效率與能源消耗表現，能源消耗可降低49%，顯示由農業廢棄物製備成生物質衍生的稻殼活性碳，可視為具有發展潛力的流動電極材料。 在三種陽離子競爭效應裡，影響程度依序為Cu2+> Ca2+> Na+，Cu2+與Ni2+共同存在於待處理溶液時，Cu2+顯著造成去除Ni2+的負面影響，ASRR下降33.3%、充電效率下降52.3%、能源消耗增加109.5%。當模擬低鎳濃度污染(0.6 mg/L)之地下水時，進流水以single-pass (單流式)操作，FCDI系統雖仍具明顯去除鎳的能力(50.6%)，但充電效率偏低且能源消耗偏高。
計畫英文摘要	A novel Flow-Electrode Capacitive Deionization (FCDI) system was applied to remediate nickel-contaminated groundwater. FCDI represents the latest advancement in Capacitive Deionization (CDI) technology. Its ion removal mechanism is identical to that of CDI—ions are separated via electro-adsorption and stored in the electrical double layers (EDLs) of the electrode materials. Two types of flow electrode materials were selected for this study: activated carbon (AC) and rice husk activated carbon (RHAC) derived from agricultural waste (rice husks). When operating the FCDI system with 1 wt% AC to treat a 300 mg/L Ni²⁺ solution, it achieved the optimal average salt removal rate (ASRR = 5.46·10⁻⁵ mmol Ni/cm²/min), charging efficiency (104.66%), and lowest energy consumption (6.16·10⁻⁵ kWh/mmol). When 1 wt% RHAC was applied in the FCDI system, although the ASRR was slightly lower (4.9·10⁻⁵ mmol/cm²/min), the system exhibited better charging efficiency and reduced energy consumption—the latter decreased by 49%. This demonstrates that biomass-derived RHAC prepared from agricultural waste shows great potential as a flow-electrode material. Among the three cation competition effects, the negative impact followed the order: Cu²⁺ > Ca²⁺ > Na⁺. When Cu²⁺ and Ni²⁺ coexisted in the solution, Cu²⁺ caused a significant negative impact on Ni²⁺ removal performance—ASRR decreased by 33.3%, charging efficiency decreased by 52.3%, and energy consumption increased by 109.5%. When simulating groundwater with low nickel concentration (0.6 mg/L) under single-pass operation, the FCDI system still exhibited noticeable nickel removal capacity (50.6%); however, charging efficiency was relatively low, and energy consumption was relatively high.