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Acidic polysaccharide gels for selective adsorption of lead (II) ion

机译:用于选择性吸附铅离子的酸性多糖凝胶

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The adsorption behavior of lead (II),zinc (II) and copper (II) on crosslinked pectic and alginic acids,and their amide derivatives form has been investigated.The selectivity order for metal ion uptake is lead (II) > copper (II) > zinc (II).The nature of such acidic polysaccharides for the removal of lead (II) ion was examined through batch wise tests and column tests and compared with that for the commercially available weakly acidic cation exchange DIAION WK resins.The experimental results revealed that chemically modified acidic polysaccharides exhibit much better separation performance compared to the latter,which suggests a high possibility of their applications in the practical separation and purification of lead (II) ion.
机译:研究了铅(II),锌(II)和铜(II)在交联的果胶和藻酸及其酰胺衍生物上的吸附行为。金属离子吸收的选择性顺序为铅(II)>铜(II) )>锌(II)。通过分批测试和柱测试检查了这种酸性多糖用于去除铅(II)离子的性质,并与市售的弱酸性阳离子交换DIAION WK树脂进行了比较。结果表明,化学修饰的酸性多糖比后者具有更好的分离性能,这表明它们在实际分离和纯化铅(II)离子中的应用可能性很高。

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