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年度	104	專案性質	實驗性質
專案類別	研究專案	研究主題	評估
申請機構	弘光科技大學	申請系所	環境與安全衛生工程系
專案主持人	王建明	職等/職稱	簡任/助理教授
專案中文名稱	增溶劑結合電透析技術處理含重金屬及氯污染之土壤及地下水
中文關鍵字	增溶劑,電透析,鉻化物污染,三氯乙烯污染
專案英文名稱	Integrated Solubilization Agent with Electrodialysis Techniques on the Treatment of Metal- and Chlorine-Contaminated Soil and Groundwater
英文關鍵字	Solubilizer, electric dialysis, chromium contamination, trichlorethylene contamination
執行金額	600,000元
執行期間	2014/12/1 至 2015/11/30
計畫中文摘要	本研究主要是探討兩種類型的糊精：hydroxypropyl-ß-cyclodextrin (HPCD) 和carboxymethyl-β-cyclodextrin (CMCD)對土壤中之含氯有機污染物和鉻離子的脫附效果。其中，HPCD對四氯乙烯的脫附效果將與三種不同類型的界面活性劑做比較。此外，本研究亦測試以電透析技術處理鉻化物廢水的效率。研究結果顯示，在外觀溶解度實驗中，HPCD的濃度越高，PCE之外觀溶解度亦相對增加，兩者之間呈現迴歸性良好的直線關係。在不同有機質含量的土壤對四氯乙烯之吸附量實驗方面，研究結果顯示以高有機質含量的土壤對四氯乙烯之吸附能力最佳。在HPCD對吸附於土壤中PCE的脫附能力的研究上顯示，HPCD濃度的增加，可以有效地提高土壤中PCE的脫附效果。但是，HPCD對土壤中PCE的脫附效率受限於土壤中有機質含量的多寡。有機質含量愈高，脫附效率愈低。界面活性劑雖然增加水中PCE溶解度的能力優於HPCD；但是HPCD在自低有機質含量土壤中脫附PCE的效能卻高於實驗中的三種界面活性劑。在HPCD和CMCD脫附土壤中TCE的效果方面， HPCD反應時間愈長，脫附效果愈佳。在反應三天後，10%HPCD可脫附87%的TCE。相較之下，CMCD對TCE的脫附效率約只有20%。在鉻化物的脫附效率方面，CMCD和HPCD都呈現出反應時間愈長，脫附效果愈佳的趨勢。在反應三天後，1%CMCD可脫附約90%的TCE；相較之下，1%和10%HPCD對TCE的脫附效率約為68%和70%。在以電透析技術處理鉻化物廢水的效率方面，電極液導電度固定為5470μS/cm時，設定流速7 L/min、固定電壓20V，淡水槽脫鹽率達47.2%時，所需的操作時間為420分鐘。此時，所對應到淡水槽中，鉻離子的去除率可達85.5%。因此，HPCD和CMCD在污染場址的整治和復育上，具有相當高的可行性與應用價值；電透析技術亦可有效處理含鉻化物的廢水。 關鍵字：糊精、界面活性劑、三氯乙烯、四氯乙烯、鉻化物
計畫英文摘要	Due to the low solubility of chlorinated organic solvents, they will form dense non-aqueous phase liquids (dNAPLs) in the aquifer and adsorb to the soil easily. Once it contaminates the aquifer, it is hard to remove completely. Heavy metals in the form of anions are also possibly sorbed to the soil. The mobility of those heavy metals is limited in the aquifer. So far, there are some sites which are contaminated by heavy metals and chlorinated organic solvents in Taiwan. Those sites are very difficultly to remediate. Cyclodextrins and surfactants have the ability to enhance desorption and solubilization. The main purposes of this study are: (1) to test the solubilization effect of solubilization agents (including cyclodextrins and surfactants) to the chlorinated organic contaminants; (2) to test the desorption effect of solubilization agents (including cyclodextrins and surfactants) to sorbed chlorinated organic contaminants and chromium compounds; (3) to use different ratios of HPCD and CMCD testing the desorption effect of chlorinated organic contaminants and chromium compounds; (4) to examine the enhancement effect of a sequence application of CMCD and surfactant approach on the removal of TCE; (5) to examine the enhancement effect of a sequence application of surfactant and CMCD approach on the removal of TCE. In this study, the target contaminants are TCE, PCE, and CrO3; the solubilization agents include carboxymethyl-β-cyclodextrin (CMCD), HPCD, and three different surfactants. The results showed that HPCD is better than the CMCD on the desorption effect of TCE. Compared with the desorption effect of HPCD, CMCD, and a mixture of HPCD and CMCD on the sorbed TCE, a mixture of HPCD .nd CMCD is better. Especially, the ratio of HPCD and CMCD is 80 to 20. For the sorbed CrO3, CMCD can desorb 51% and HPCD can desorb 29%, after one day Keywords: cyclodextrin, surfactant, trichloroethylene, tetrachloroethylene, chromic acid.