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年度	109	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	明志科技大學	申請系所	環安衛系
專案主持人	崔砢	職等/職稱	副教授
專案中文名稱	結合台灣本土有益菌與電動力法移除土壤多種重金屬之研究
中文關鍵字	有益菌, 植生復育, 福木, 五彩石竹
專案英文名稱	Feasibility of using native beneficial microorganisms to enhance the phytoextraction efficiency of heavy metal from soil
英文關鍵字	Beneficial Microorganisms, Phytoremediation, Garcinia, Rainbow Pink
執行金額	870,000元
執行期間	2020/1/1 至 2020/12/31
計畫中文摘要	本計畫採集桃園與彰化三處污染場址的土壤，以及將桃園污染土壤額外添加5%的有機質肥料，進行電動力法，測試不同操作流質對土壤重金屬的移除效率。實驗結果顯示，桃園土壤由於pH值較低，且有益混合菌具有高於檸檬酸的電導度，以及良好的表面張力特性，因此雖然有益混合菌的初始pH值較檸檬酸為高，但是對桃園土壤中鎘的移除效果卻最佳。彰化大村土壤具有7.15%的有機質含量，且由於檸檬酸的pH值低於有益混合菌液兩個級數，所以在電動力法處理過程中，有益菌對彰化大村土壤三種重金屬的移除效率，均是不如檸檬酸的移除效果。彰化和美污染土壤的有機質含量約為1.96%，緩衝能力較彰化大村土壤為低，因此對於彰化和美土壤中重金屬的移除效率，在靠近陽極的區域，有益菌液對於銅、鎳、鋅的移除效率均是優於檸檬酸，但是在靠近陰極的區域，卻出現相差不大的情形。在桃園土壤中添加額外的有機質肥料，明顯觀察到會降低電動力法對土壤中鎘的移除效率，且對於有益菌液移除效率的影響大於檸檬酸。彰化和美土壤中的四種重金屬，鎳與鋅主要是以鐵錳氧態為主，所以有益菌液在靠近陽極的區域能相當程度地將其從土壤中移除。銅在土壤中主要以有機態存在，而鉻主要以殘留態存在，在土壤清洗實驗中，有益混合菌液對銅的清洗效果較佳，但是在電動力法實驗中，有益混合菌對銅的移除效率卻不佳，可能與銅與土壤有機質形成錯合物有關。綜而言之，還需要更多的研究以確定土壤重金屬的移除機制。
計畫英文摘要	This project collected heavy metal polluted soil samples from three contaminated sites in Taoyuan and Changhua counties. In addition, additional 5% organic fertilizer was added to the Taoyuan contaminated soil. These soils were used to examine the heavy metals removal efficiency by different washing agents combined with electrokinetic technology. The experimental data showed that Taoyuan soil had low organic matter content, and thus had low buffering capacity. Because beneficial microorganism solution had higher electrical conductivity than citric acid, using beneficial microorganism solution as electrolyte could help the rapid decline of pH near the anode. Hence, beneficial microorganisms solution showed the best cadmium removal efficiency from soil among all the tested electrolyte. The Changhua had high organic content of 7.15%, and had high buffering capacity. Therefore, the main factors affecting the soil pH are the soil itself and the pH of the operating fluid. Since the pH of citric acid is two level orders lower than the beneficial microorganism, the citric acid showed better heavy metal removal efficiency when compared with beneficial microorganism solution during the first five days of operation. Among the three heavy metals in Changhua soil, nickel was mainly in the iron-manganese form. Since citric acid had high desorption capacity for heavy metals in iron- manganese form, nickel showed the best removal efficiency. Copper was mainly in organic form, and chromium was in residual form. In the soil washing experiment, the beneficial microorganism solution had better removal efficiency for copper when compared with chromium. In the electrokinetic experiment, however, beneficial microorganism solution had similar removal efficiency for copper and nickel. Therefore, more studies is still needed to determine the heavy metal removal mechanisms from soil.