胺化改性吸附剂对镉离子吸附和脱附再生行为研究  

Investigation of the Adsorption,Desorption and Regeneration Behaviors of the Aminated Adsorbents for Cadmium Ions

作　　者：刘长坤[1] 乐小芳[1] 赵绪新[1] 

机构地区：[1]深圳大学化学与化工学院,广东深圳518060

出　　处：《广东化工》2014年第6期8-9,共2页Guangdong Chemical Industry

基　　金：广东省自然科学基金(S2012040006815);深圳市介孔材料与锂离子电池重点实验室开放基金(201306);深圳市科技计划项目(JCYJ20130329113322731)资助

摘　　要：文章研究了胺化改性微球吸附剂对重金属镉离子(Cd2+)的吸附和脱附再生行为。实验结果表明,pH、温度和离子强度的增加有利于Cd2+吸附量的提高;胺化改性微球对Cd2+的脱附速率非常快,10 min时脱附效率即可达到77.3%;四次重复使用实验表明胺化改性微球对Cd2+的脱附效率维持在80%以上,吸附量(0.71 mmol/g)并未有显著改变。This paper investigated the adsorption, desorption and regeneration behaviors of the aminated microsphere （AM） adsorbents for cadmium ions. The results indicated an increase of the adsorption capacity for cadmitun ions with the increase of the influencing factors of pH, temperature and ionic strength, respectively. The desorption of the cadmium ions from the cadmium-adsorbed AM was fast, with 77.3% of the desorption efficiency within the first 10 minutes. The repeated use experinaents showed that the AM was able to maintain a desorption efficiency of more than 80% for 4 repeated times, without the significant loss of the adsorption capacity （0.71mmol/g）.

关 键 词：胺化改性微球 吸附 脱附再生 

分 类 号：TQ[化学工程]