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一种新型复合除砷材料的制备及其性能

Keywords: 除砷,D401-Zr,,吸附剂,竞争离子

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Abstract:

将锆的水合氧化物固载于大孔螯合树脂D401上制备出一种新型除砷材料,并研究了不同实验条件下复合吸附剂D401-Zr对水溶液中As(V)的吸附性能。研究结果表明,在pH<5.2时D401-Zr对As(V)都具有较强的吸附性能;其吸附等温线与Langmuir吸附模型具有较高的吻合度;吸附动力学研究表明,D401-Zr对砷的吸附均遵循二级动力学方程;竞争吸附实验表明,与SO42-、Cl-共存时,D401-Zr对砷的去除率大于90%,而与PO43-、F-竞争离子共存时,其去除率明显下降。

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