中文摘要：

利用简单的碱沉淀法制备不同的水合金属氧化物,并对所得七种水合金属氧化物的磷酸根吸附等温线进行了系统的探讨比较。研究表明,25℃条件下,Al、Fe、Ni、Cu和Ce的水合金属氧化物对磷酸根的吸附最符合Langmuir线性吸附方程,而水合氧化锌和水合氧化钴吸附剂最符合线性等温线模型。所有这七种水合金属氧化物对磷酸根的吸附都可用Freundlich经验模型来模拟。这几种吸附剂之间并不存在吸附量和比表面积的正比关系。吸附前后的红外光谱研究发现,吸附导致的主要变化落在800~1 250 cm-1范围内。实验证实了这几种水合金属氧化物都具有潜在的水处理吸附剂应用价值。

英文摘要：

Adsorption isotherm of 7 hydrous metal oxides which were prepared by simple alkali precipitation method was discussed systematically and results showed that hydrous metal oxides of Al,Fe,Ni,Cu and Ce fit best with Langmuir linear adsorption equation,and hydrous zinc oxides and hydrous cobalt oxides with linear isotherm in the tested concentration range at 25 ℃.Adsorption data of all 7 hydrous metal oxides can be fit well with Freundlich isotherm.Phosphate adsorption capacity is not proportional to specific surface area among these oxide adsorbents.IR band changes before and after adsorption happen mainly in the range of 800~1 250 cm-1.The experiments prove that the hydrous metal oxides have potential to use as adsorbents for water treatment.