| Extraction of copper ions by supercritical carbon dioxide |
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| 作者姓名： | CUI Zhao-jie LIU Jun-cheng GAO Lian-cun WEI Ying-qin |
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| 作者单位： | Department of Environmental Engineering，Shandong University，Jinan 250100，China |
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| 摘 要： | ＩｎｔｒｏｄｕｃｔｉｏｎＣｏｍｐｌｅｘａｔｉｏｎｃｏｍｂｉｎｅｄｗｉｔｈｓｏｌｖｅｎｔｅｘｔｒａｃｔｉｏｎｈａｓｂｅｅｎｕｓｅｄｔｏｅｘｔｒａｃｔｍｅｔａｌｉｏｎｓｆｒｏｍｓｏｌｉｄｍａｔｒｉｘｓｕｃｈａｓｓｏｉｌｓａｎｄｓｅｄｉｍｅｎｔｓ(Ｍｉｎｃｚｅｗｓｋｉ,1 982 ;Ａｌｆａｓｓｉ,1 992 ) .Ｔｈｅｓｅｓｏｌｖｅｎｔｅｘｔｒａｃｔｉｏｎｐｒｏｃｅｄｕｒｅｓｈｏｗｅｖｅｒａｒｅｕｓｕａｌｌｙｔｉｍｅａｎｄｌａｂｏｒ ｉｎｔｅｎｓｉｖｅ.Ｉｎａｄｄｉｔｉｏｎｓｏｌｖｅｎｔｅｘｔｒａｃｔｉｏｎｒｅｑｕｉ…
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| 收稿时间： | 4/8/1999 12:00:00 AM |
| 修稿时间： | 1999/8/30 0:00:00 |
Extraction of copper ions by supercritical carbon dioxide |
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| CUI Zhao-jie,LIU Jun-cheng,GAO Lian-cun,WEI Ying-qin.Extraction of copper ions by supercritical carbon dioxide[J].Journal of Environmental Sciences,2000,12(4):444-447. |
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| Authors: | CUI Zhao-jie LIU Jun-cheng GAO Lian-cun WEI Ying-qin |
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| Abstract: | Complexation combined with supercritical fluid extraction was used to extract Cu 2 in this study. The effects of pressure, temperature, volume of CO 2 on the efficiency of extraction were systematically investigated. At the optimum condition a 57.32% recovery was achieved. Addition of suitable amount of methanol(v/v=5%) to the supercritical CO 2 can increase in the extraction of Cu 2 (72.69%, RSD =2.12%, n =3). And the recovery can further increase in the presence of non ionic surfactant Triton X 100 because of its function of solubilization. Surfactant was first used in the extraction of metal ions in the present study, and the results are satisfied (90.52%, RSD =2.20%, n =3). |
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| Keywords: | supercritical fluid extraction metal ions chelating agent modified surfactant |
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