纳米氧化铁应用于水中镉(Ⅱ)的吸附  

Application of Adsorption for Ferric Oxide Nanoparticles to Cadmium(Ⅱ) in Aqueous Solution

作　　者：李广川 胡军[2] 周跃明[2] 彭思远[3] 

机构地区：[1]广东省核工业地质局二九二大队中心实验室,广东河源517001 [2]东华理工大学化学生物与材料科学学院,江西抚州344000 [3]福建省闽北地质大队,福建邵武354000

出　　处：《广东化工》2011年第7期263-264,共2页Guangdong Chemical Industry

基　　金：核资源与环境教育部重点实验室开放基金项目(No.060613)

摘　　要：以原子吸收光谱法为检测手段，研究了新型纳米Fe2O3材料对水中Cd^2＋的静态吸附性能，考察了影响吸附与解吸的主要因素。结果表明，在pH8．0-9．0范围内，纳米Fe2O3对Cd^2＋具有较好的吸附效果，吸附率可达96％以上。采用0．5-3．0mol／LHNO3可将吸附于纳米Fe2O3上的Cd^2＋定量洗脱。将纳米Fe2O3用于自来水样中低浓度隔的加标回收．结果较满意。The static absorbability of nanometer-sized Fe2O3 as a novel material to Cd^2＋ in water was detected by the atomic absorption spectroscope （AAS）. The primary factors influencing adsorption and elution were investigated. The result showed that the absorbability for nanometer-sized Fe2O3 to Cd^2＋ was better at pH 8.0-9.0, with the adsorption rate of Cd^2＋ being 96 % above. Cd^2＋ adsorbed on ferric oxide nanoparticles was quantificationally eluted by 0.5-3.0 mol/L HNO3. The nanometer-sized Fe2O3 was applied to recover Cd^2＋ for low concentration added to tap water and the experimental results were satisfactory.

关 键 词：纳米氧化铁 Cd2+ 吸附 静态条件 应用 

分 类 号：TQ424.1[化学工程]