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首页> 外文期刊>Journal of Hazardous Materials >Comparison and evaluation of the synthetic biopolymer poly-L-aspartic acid and the synthetic 'plastic' polymer poly-acrylic acid for use in metal
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Comparison and evaluation of the synthetic biopolymer poly-L-aspartic acid and the synthetic 'plastic' polymer poly-acrylic acid for use in metal

机译:用于金属的合成生物聚合物聚-L-天冬氨酸和合成“塑料”聚合物聚丙烯酸的比较和评估

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摘要

Poly-L-aspartic acid (PLAsp), a biopolymer, and a similar synthetic polymer, poly-acrylic acid (PAA), each consisting of ~ 50 repeating Asp and acrylic acid monomers, respectively, were immo- bilized onto controlled pore glass (CPG) and evaluated for use as metal ion-exchange materials. Both polymers achieve metal complexation primarily through their repeating carboxylate side groups re- sulting in a similar binding trend for the metals tested (Ca~2+, Cd~2+, Co~2+, Cu~2+, Mg~2+, Mn~2+, Na~+, Ni~2+, Pb~2+), with metal binding capacities ranging from <0.1 to 12 μmol metal/g column and <0.1 to 32 μmol metal/g column for PLAsp and PAA respectively. Cu~2+ and Pb~2+ exhibited strong binding to both materials, while the other metals demonstrated only weak or minimal binding.
机译:聚-L-天冬氨酸(PLAsp),一种生物聚合物和类似的合成聚合物,聚丙烯酸(PAA)(分别由〜50个重复的Asp和丙烯酸单体组成)被固定在可控孔玻璃上( CPG),并评估用作金属离子交换材料。两种聚合物均主要通过其重复的羧酸盐侧基实现金属络合,从而对测试的金属(Ca〜2 +,Cd〜2 +,Co〜2 +,Cu〜2 +,Mg〜2 +, Mn〜2 +,Na〜+,Ni〜2 +,Pb〜2 +),对于PLAsp和PAA的金属结合容量分别为<0.1至12μmol金属/ g柱和<0.1至32μmol金属/ g柱。 Cu〜2 +和Pb〜2 +对两种材料均表现出较强的结合力,而其他金属仅表现出较弱或极小的结合力。

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