Ce–Fe-modified zeolite-rich tuff to remove Ba2+-like 226Ra2+ in presence of As(V) and F− from aqueous media as pollutants of drinking water
作者： María Teresa Olguín , Shuguang Deng
DOI: 10.1016/J.JHAZMAT.2015.09.070
关键词:
摘要: The sorption behavior of the Ba(2+)-like (226)Ra(2+) in presence H2AsO4(-)/HAsO4(2-) and F(-) from aqueous media using Ce-Fe-modified zeolite-rich tuff was investigated this work. Na-modified also considered for comparison purposes. collected Wyoming (US) contact with NaCl CeCl3-FeCl3 solutions to obtain Na- tuffs (ZUSNa ZUSCeFe). These zeolites were characterized by scanning electron microscopy X-ray diffraction. BET-specific surface points zero charge determined as well content Na, Ce Fe neutron activation analysis. textural characteristics point changed species zeolitic network. A linear model described isotherms distribution coefficients (Kd) varied respect metallic present material. As(V) oxianionic chemical affected parameter when (226)Ra(2+)-As(V)-F(-) ZUSCeFe. adsorbed ZUSCeFe same amount, independent concentration initial solution.
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