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 [N_Bz,1,1,18][BTMPP], didecyldimethylammonium saccharinate, [N_10,10,1,1][SACH] and didecyldimethylammonium acesulfamate, [N_10,10,1,1][ACE] were synthesized and used between others for this extraction. The solvent extraction behavior was compared to well known in this process ILs: methyltrioctylammonium chloride ([N_8,8,8,1][Cl]), Aliquat 336, trihexyltetradecylphosphonium chloride, ([P_6,6,6,14][Cl]), Cyphos IL 101 and trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl)phosphinate, ([P_6,6,6,14][BTMPP]). Extraction was provided with pure ILs and with addition of complexion agents, such as: 18-crown-6, 24-crown-8, alkanes C₂₄H_50, C₂₇H₅₆, Triton TM X-100 and L-histidine. It was shown that quick and efficient extraction, where >90% of Co(II) and Zn(II) may be obtained using pure IL, or with additives, using synergistic effects of mixture of two ILs, or using ILs in Aqueous Biphasic Systems (ABS) method with NaCl at low temperature T = 303 K. The tributyltetradecylphosphonium chloride, [P_4,4,4,14][Cl], tetraoctylphosphonium bromide, [P_8,8,8,8][Br], and benzalkonium chloride [N_Bz,1,1,R][Cl] (R = C₁₂H₂₅–60%; C₁₄H₂₉–40%) were used in ABS experiment. The extraction behavior was carried out also using Deep Eutectic Solvents, DES non miscible with water, which presented lower efficiency. The extraction process confirmed the large efficiency and distribution ratio using [P_6,6,6,14][BTMPP] with addition of 18-Crown-6 at pH = 7 for Co(II), as well as using Cyphos IL 101 ([P_6,6,6,14][Cl]) with addition of 18-crown-6, or Triton TM X-100, or L-histidine at pH 1 (no addition of acid) for Zn(II). The same results for Zn(II) were obtained with ABS method with {[P_4,4,4,14][Cl] + NaCl + Zn (II)}. However, the best results were obtained with trihexyltetradecylphosphonium thiocyanate, [P_6,6,6,14][SCN] for both metal ions.

与文献ILs中已研究的，但不添加酸且在低温下相比，提出了用新型离子液体（ILs）从水相中萃取Co（II）和Zn（II）的效率。因此，提出了一种新的，环保的金属离子提取方法。新型铵离子液体，苄基二甲基_十八烷基双（2,4,4-三甲基戊基）次膦_酸酯[N _Bz，1,1,18 ] [BTMPP]，二癸基二糖精铵，[N _10,10,1,1 ] [SACH]和二癸基二甲基乙酰磺胺酸铵合成[N _10,10,1,1 ] [ACE]并在其他之间进行提取。将溶剂萃取行为与该工艺中众所周知的离子液体进行了比较：甲基三辛基氯化铵（[N _8,8,8,1] [Cl]），Aliquat 336，氯化三己基_{十四烷基phosph}（[P _6,6,6,14 ] [Cl]），Cyphos IL 101和双（2,4,4-三甲基戊基）次膦酸三己基十四烷基phosph（[[P _{6， 6,6,14} ] [BTMPP]）。用纯的ILs和添加的络合剂（例如18-crown-6、24-crown-8，烷烃C ₂₄ H _50， C ₂₇ H ₅₆，Triton TM X-100和L-组氨酸）进行萃取。结果表明，使用纯净离子液体或与添加剂，两种离子液体的混合物的协同作用或在水相系统中使用离子液体，可快速高效地提取其中90％的Co（II）和Zn（II）。低温T的NaCl（ABS）方法 ＝ 303K。氯化三丁基_十四烷基,， [P _4,4,4,14 ] [Cl]，溴化四辛基_phosph，[P _8,8,8,8 ] [Br]，和苯扎氯铵[N _{Bz，1,1， R} ] [Cl]（R = C ₁₂ H ₂₅ –60％; C ₁₄ H ₂₉ –40％）用于ABS实验。萃取行为也使用与水不混溶的DES的深共晶溶剂进行，其效率较低。使用[P _6,6,6,14 ] [BTMPP]并在pH = 7的Co（II）中添加18-Crown-6，以及使用Cyphos IL 101（ [P _6,6,6,14] [Cl]），添加18-crown-6或Triton TM X-100或L-组氨酸，在pH 1下（不添加酸）形成Zn（II）。使用{[P _4,4,4,14 ] [Cl] + NaCl + Zn（II）}的ABS方法获得的Zn（II）的结果相同。但是，使用两种金属离子的三己基_十四烷基硫氰酸_phosph，[P _6,6,6,14 ] [SCN]可获得最佳结果。