交联粘土矿物的吸附特性研究（Ⅰ）──交联累托石对磷酸根离子的选择吸附作用

Study on the Adsorption Properties of Cross-Linked Clay Minerals(Ⅰ)──Choice Adsorption of Aluminium Cross-linked Rectorite for Phosphate in Solution

粉晶Ｘ射线衍射、红外光谱、热分析和ＢＥＴ比表面积测定等实验结果表明，铝交联累托石的层间Ｃａ２＋被聚合铝交联柱所取代，层孔高度提高到０．６２ｎｍ，比表面积增大，对水溶液中磷酸根具有明显的选择吸附性，磷去除率可提高３倍以上，文中还讨论了交联累托石对磷酸根的选择吸附机理。

Hydroxy-aluminium cross-linked rectorite (AlOH-CLR) formed by rectorite from Zhongxiang with hydroxy-aluminium is found to be a good choice adsorbent for phosphate. It is discovered, by XRD, IR, DTG, DTA and BET specific surface area measurment, that for Al-cross-linked rectorite interlayer cation Ca(2+) is replaced by aluminium polymerizer and d(001) is increased to 2.6 nm. Its adsorptional mechanism for phosphate is discussed.