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本文研制了一种新型除砷吸附剂,即基于稀土金属铈的无机铈铁吸附剂,并对该吸附剂的除砷效果进行了评价．活性氧化铝和新型研制的铈铁吸附剂对Ａｓ(Ⅴ)吸附平衡比较实验结果表明:活性氧化铝除砷的最佳 ｐＨ为 ３．５－５．５,最大吸附量为８６ｍｇ Ａｓ(Ⅴ)·ｇ－１;而铈铁吸附剂的ｐＨ适用范围广,在ｐＨ３－７的范围内具有较高的除砷性能,最大吸附量可达１６．０ｍｇＡｓ(Ⅴ)·ｇ－１,该吸附材料对Ａｓ(Ⅴ)的吸附基本符合Ｆｒｅｕｎｄｌｉｃｈ型等温方程式,硬度、盐度和氟离子不干扰吸附过程,但磷酸根离子干扰材料对Ａｓ(Ⅴ)的吸附、铈铁无机吸附材料在饮水除砷中具有比较大的应用前景．
In this paper, a new type of arsenic removal arsenic was developed, which is based on cerium rare earth cerium iron adsorbent, and the removal of arsenic by the adsorbent were evaluated. The experimental results on the adsorption equilibrium of As (Ⅴ) with activated alumina and the newly developed cerium iron adsorbent show that the optimum pH for the removal of arsenic from activated alumina is 3.5-5.5 and the maximum adsorption capacity is 86 mg As (Ⅴ) · G-1; while the cerium iron adsorbent pH wide range of applications, in the pH range of 3-7 has arsenic removal performance, the maximum adsorption capacity of up to 16.0mgAs (Ⅴ) · g-1, the adsorbent material The adsorption of As (Ⅴ) to Freundlich isotherm was consistent with that of As (Ⅴ). The hardness, salinity and fluoride ions did not interfere with the adsorption process. However, the adsorption of As (Ⅴ) by phosphate ions interfered with the adsorption of As Has a relatively large application prospects.