Liquid-liquid extraction of cobalt(II) and zinc(II) from aqueous solutions using novel ionic liquids as an extractants

Extraction efficiencies of Co(II) and Zn(II) from aqueous phase with new ionic liquids (ILs) in comparison with already studied in literature ILs, but without addition of acids and at low temperatures are presented. Thus the new, environmental-friendly method of extraction of metal ions is proposed. A novel ammonium ILs, benzyldimethyloctadecylammonium bis(2,4,4-trimethylpentyl)phosphinate [NBz,1,1,18][BTMPP], didecyldimethylammonium...