A new strategy for supercritical fluid extraction of copper ions |
| |
Authors: | Liu J Wang W Li G |
| |
Institution: | a Institute of Colloid and Interface Chemistry, Shandong University, Jinan 250100, People's Republic of China b Department of Chemistiy, Jinan University, Jinan 250002, People's Republic of China |
| |
Abstract: | Complexation combined with supercritical fluid extraction was used to extract Cu2+. The effects of pressure, temperature, and total volume of CO2 on the efficiency of extraction were systematically investigated. The extraction recovery was low (57.32%) only by pure supercritical CO2. Addition of a suitable amount of methanol (v/v=5%) to supercritical CO2 could enhance the extraction of Cu2+ (72.69%, relative standard deviation (R.S.D.)=2.12%, n=3), and the recovery increased largely (90.52%, R.S.D.=2.20%, n=3) in the presence of nonionic surfactant Triton X-100. Reverse micelle formation is presented as a new strategy of improving the extraction of metal ions with supercritical CO2 in this paper. |
| |
Keywords: | Supercritical fluid extraction Metal chelate Reverse-micelle Modifier |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|