摘要
基于Fe（Ⅲ）对砷的良好亲和性,将FeO（OH）负载在有机高聚物上,研发出了FeO（OH）吸附剂。通过静态和动态吸附脱附试验,研究FeO（OH）吸附剂的除砷性能。研究结果表明,FeO（OH）吸附剂对As（Ⅴ）吸附性能良好,在纯水配水条件下,最大Langmuir吸附容量可达13.7 mg/g;FeO（OH）吸附剂具有较宽的pH适用范围（3.0-9.0）,最佳吸附pH为4.0;FeO（OH）吸附剂具有较好的重复利用性,在9次再生回用试验中回用与初始吸附容量比稳定在0.5-0.6;动态试验结果表明FeO（OH）吸附剂在接近实际高砷水条件下具有高的穿透倍柱体积和适用性,原水As（Ⅴ）浓度为100-120μg/L和500-550μg/L时对应的穿透倍柱体积分别为5 000和1 400[出水As（V）小于10μg/L],相应的穿透吸附容量分别为0.76和1.08 mg/g。
FeO（OH） absorbent is synthesized through loading FeO（OH） in the organic polymer.Based on Fe（III） it has good affinity for arsenic.The effects of arsenic removal of FeO（OH） absorbent are studied by batch and column experiments.The results show that FeO（OH） absorbent has good As（V） adsorption efficiency,the maximum Langmuir adsorption capacity is 13.7 mg/g with solution made by pure water.FeO（OH） absorbent can absorb arsenic（V） effectively in the pH range of 3.0～9.0,most effectively in pH=4.0.The reusable/initial adsorption capacities maintain between 0.5-0.6 along with the running cycles,which indicates absorbent has a good reusable performance.Through column experiments,with the As（V） concentrations 100-120 μg/L and 500~550 μg/L,the breakthrough BV is 5 000 and 1 400,breakthrough adsorption capacities are 0.76 and1.08 mg/g.
出处
《中国农村水利水电》
北大核心
2010年第9期84-87,共4页
China Rural Water and Hydropower
基金
国家"十一五"科技支撑项目(2006BAD01B02)
