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晶化温度对铁铝复合吸附剂除磷效能影响

Keywords: 铁铝复合吸附剂,晶化温度,除磷,pH值,CO_3~(2-)

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Abstract:

考察了不同晶化温度下制备的铁铝复合吸附剂去除PO_4~(3-)-P的性能以及pH值和共存干扰离子CO_3~(2-)对其吸附去除PO_4~(3-)-P性能的影响.结果表明,晶化温度对铁铝复合吸附剂去除PO_4~(3-)-P的性能有显著影响,较低晶化温度下制备的铁铝复合吸附剂去除PO_4~(3-)-P效果明显优于高温制备的吸附剂;晶化温度的升高使晶体本身结构发生变化,导致比表面积降低,是其吸附性能下降的主要原因;较低晶化温度下制备的铁铝复合吸附剂去除PO_4~(3-)P的性能受pH值影响较小,对水质适应性强;共存离子CO_3~(2-)-对铁铝复合吸附剂去除PO_4~(3-)P的性能具有强抑制作用,应用中应该尽量避免这种负面干扰作用的存在.

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