溴、碘离子吸附研究进展

Research progress on the adsorption of bromide and iodide from aqueous solutions

吸附法是从盐湖卤水等溴、碘含量较低的溶液中直接分离溴、碘离子的适用方法,也是去除饮用水中过高含量的溴和碘,以及去除水中放射性碘离子的有效方法.本文简要介绍了溴、碘的用途、制备方法及吸附分离溴、碘离子的实际意义,系统评述了单质银、银复合、氧化银复合、氯化银复合、有机胺复合、层状双氢氧化物等吸附剂对溶液中溴或碘离子的吸附.研究省去氧化步骤,直接从溶液中吸附回收溴、碘离子的工艺路线,对环保及溴、碘的开发利用具有重要意义.

Adsorption is an effective method for the separation of bromide and iodide from natural water bodies with a low bromide or iodide content,such as salt lake brines. It is also an effective method for the adsorptive removal of bromide and iodide from drinking water,and radioactive iodide from water solutions. The application and preparation of bromine and iodine were introduced. The significance of the adsorption of bromide and iodide in real world application was emphasized. The adsorption of bromide or iodide from aqueous solutions using silver, silver composite, Ag2 O composite,Ag Cl composite,amine composite,layered double hydroxide adsorbents,etc. were comprehensively reviewed. It is of great significance to the environmental protection and the development and utilization of bromine or iodine to develop processes to adsorb and recycle bromide or iodide from solution directly without oxidation steps.