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Water-soluble polymer materials as complexing reagents for the separation of metal ions using membrane filtration

机译:水溶性高分子材料作为络合剂,可通过膜过滤分离金属离子

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The commercial, water-soluble poly(sodium anetole sulfonate) (PAnS), poly(sodium vinylsulfonate) (PVS), and poly(sodium 4-styrene sulfonate) (PStyS) were investigated as metal ion binding reagents using the liquid-phase-polymer-based retention (LPR) technique. The retention profiles of the following metal ions: Co(II), Ni(II), Ca(II), Mg(II), Pb(II), Cd(II), Zn(II), Cr(III), and Cu(II) were obtained by the LPR technique at pH 3, 5, and 7, and by changing the filtration factor Z from 0 to 10. As the pH increased, the affinity towards the metal ions increased slightly. By increasing the filtration factor Z, the affinity for the metal ions did not decrease significantly. This means that the ligand-metal interaction was strong, and it is not possible to break it by washing with water at the same pH of the filtration cell.
机译:使用液相色谱法研究了商用水溶性聚(茴香脑磺酸钠)(PAnS),聚(乙烯基磺酸钠)(PVS)和聚(4-苯乙烯磺酸钠)(PStyS)作为金属离子结合剂基于聚合物的保留(LPR)技术。下列金属离子的保留曲线:Co(II),Ni(II),Ca(II),Mg(II),Pb(II),Cd(II),Zn(II),Cr(III)和通过LPR技术在pH 3、5和7以及将过滤因子Z从0更改为10可获得Cu(II)。随着pH的增加,对金属离子的亲和力会略有增加。通过增加过滤因子Z,对金属离子的亲和力没有显着降低。这意味着配体与金属的相互作用很强,并且不可能通过在相同pH的滤池中用水洗涤来破坏它。

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