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Ion flotation of zinc(II) and cadmium(II) with proton-ionizable lariat ethers-Effect of cavity size

机译:质子可离子化的套索醚离子浮选锌(II)和镉(II)-腔尺寸的影响

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Competitive flotation of Zn(II) and Cd(II) ions from dilute aqueous solutions (c_(Me) = 1 x 10~(-5) M),by a series of lipophilic proton-ionizable lariat ethers varying ring sizes in the presence of nonylphenol(nonylethylene glycol) ether as the nonionic foaming agent is reported.The influence of the rings size variations from DB-13-C-4 through DB-16-C-5 to DB-19-C-6 on separation of zinc and cadmium ions is discussed.The influences of structural variation within the lariat ether,concentration of the macrocycle,and pH of the aqueous solution is presented.An effect of alkali metal cations,i.e.Li~+,Na~+ and K~+,on Zn(II) and Cd(II) ion flotation removal is also reported.It was shown,that the removal of Zn~(2+) and Cd~(2+) increases with increase of pH value and decreases with alkali metal cations concentration increase in aqueous solutions.
机译:在存在下通过一系列可变环的亲脂性质子可离子化的套索状醚竞争性地从稀水溶液(c_(Me)= 1 x 10〜(-5)M)中浮选Zn(II)和Cd(II)离子报道了壬基酚(壬基乙二醇)醚作为非离子型发泡剂的研究。从DB-13-C-4到DB-16-C-5到DB-19-C-6的环大小变化对锌分离的影响给出了套索醚内部结构变化,大环浓度和水溶液pH值的影响。碱金属阳离子Li〜+,Na〜+和K〜+的影响, Zn(II)和Cd(II)的离子浮选也有报道。结果表明,Zn〜(2+)和Cd〜(2+)的去除随着pH值的增加而增加,随碱金属阳离子的减少而减少。水溶液中浓度增加。

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