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Preparation and characterization of sodium iron titanate ion exchanger and its application in heavy metal removal from waste waters

被引：61
作者：
Akieh, Marceline N. [1 ]
Lahtinen, Manu [2 ]
Vaisanen, Ari [2 ]
Sillanpaa, Mika [1 ]
机构：
[1] Univ Kuopio, Lab Appl Environm Chem, Dept Environm Sci, FIN-50100 Mikkeli, Finland
[2] Univ Jyvaskyla, Dept Chem, FIN-40014 Jyvaskyla, Finland
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 152卷 / 02期
关键词：
sodium iron titanate; iron-doped sodium nonatitanate; ion exchange; heavy metal; waste water;
D O I：
10.1016/j.jhazmat.2007.07.049
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 [工学]; 0830 [环境科学与工程];
摘要：
The ion exchange properties of sodium iron titanates, namely, NaFeTiO4, Na2Fe2Ti6O16 and iron-doped sodium nonatitanate were investigated. Conventional solid state and sol-gel methods were used in the synthesis of the sodium iron titanates. Structural characterization of the materials was performed with powder X-ray diffraction (XRD), thermogravimetry (TG), scanning electron microscopy (SEM) equipped with energy dispersive spectrometer (EDS) and with inductively coupled plasma optical emission spectrometry (ICP-OES). Based on TG analyses, the novel iron-doped sodium nonatitanate was proven to be a member of the layered titanate family. The different sodium iron titanates were compared based on the efficiency in separating Ni from aqueous streams by conducting batch experiments with a batch factor of 1000 ml/g. Iron-doped sodium nonatitanate exhibited the best ion exchange performance compared to the other sodium iron titanates studied. It was found to be selective for nickel over potassium and showed 99% removal efficiency for Ni. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：640 / 647
页数：8
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