交联粘土矿物的吸附特性研究(Ⅱ)——铝交联蒙脱石对磷酸根离子的选择吸附作用

Study on the Adsorption Properties of Cross-linked Clay Minerals(Ⅱ) —Choice Adsorption of Aluminium Cross-linked Montmorillonite for Phosphate in Solution

研究交联蒙脱石吸附剂的制备及其对水溶液中磷酸根离子的吸附．结果表明铝交联后，蒙脱石的结构层间距由１．５７８ｎｍ增大到１．６９５ｎｍ左右，对磷的吸附效果明显改善．当吸附剂用量为９ｇ／ＬＨ２Ｏ时，对磷的吸附量为５．５６ｍｇ／ｇ，去除率可达到１００％．

Hydroxy-aluminium cross-linked montmorillonite(ALOH-CLM)formed by montmorillonite from TaiHe,Hubei is found to be a good adsorbent for phosphate.After cross-linked by hydroxy-aluminium,the layer-distance d 001 of the montmorillonite increases to 1 695nm,its adsorptional property for PO 3- 4improves.When 9 g ALOH-CLM was used for 1 litre phosphate-containing solution with 16.3 mg/L of P content(in P element),the adsorption amount was 5.56 mg(P)/g (sample ALOH-CLM),the adsoptional rate was up to 100%.