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《Materials Review》 2014-16
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Adsorption Study of Zinc Potassium Hexacyanoferrate for Copper Ion from Radioactive Wasterwater

LONG Qing;KANG Bin;DAI Yaodong;LI Jun;College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics;  
A Prussian blue analogue(KZnFC)was prepared by co-precipitation method.The compound was characterized using different techniques including X-ray fluorescence analyzer(XRF)and X-ray diffraction analyzer(XRD).Results showed that the formula of the compound was K1.11Zn1.53Fe(CN)6.By static adsorption experiments,the effects of adsorption time,adsorbent dosage,pH,copper initial concentration on the adsorption properties of zinc potassium hexacyanoferrate for copper ion in simulating radioactive waste copper sulfate solution were studied.The adsorption mechanism was characterized by transmission electron microscopy(TEM)and Mossbauer spectrum.The experiment results showed that the removal of the K1.11Zn1.53Fe(CN)6for Cu2+can reach 89.23%during 2h,and the adsorption capacity can reach 121.86mg/g in 100 mg dosage,4-7of pH and room temperature.Moreover,the Mossbauer measurements before and after adsorption of Cu2+showed that the Cu2+adsorption was mainly due to the ion exchange between K+in KZnFC and Cu2+in the solution.The adsorption of copper ion on zinc potassium hexacyanoferrate follows Freundlich adsorption isotherm model.
【Fund】: 国家自然科学基金(81071256);; 江苏省环保厅科研课题(201151)
【CateGory Index】: TL941.1
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