实验以凹凸棒土和氯化镁为原料,在高温下进行灼烧得到粒状的无机复合物.该复合物对水体中的磷具有很好的吸附性.用X射线和扫描电镜对吸附剂吸附前后的表面进行分析,阐述其吸附过程表面积的变化及吸附机理.结果表明:该吸附剂对磷酸根吸附的动力学服从Langmuir速率方程,温度升高加快吸附速率.在磷酸根初始浓度为100mg·g-1、吸附温度为20℃、pH为5.4时可获得最大吸附容量为34.8 mg·g-1.
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