Extraction of organic impurities using 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM][PF₆]

Extraction of several chloro compounds from water has been examined. As the extracting liquid the 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM][PF₆], which is common hydrophobic ionic liquid, was used. Additionally, extraction of selected chlorinated compounds from tert-butylmethylether (MTBE) was investigated. The obtained results show the usefulness of [BMIM][PF₆] to remove the organic impurities from water, particularly at the concentration range inappropriate for biological purification plants.