碳酸钙改性硅藻土的制备及其吸附性能研究

摘要

The modified diatomite with excellent adsorption of heavy metals was successfully prepared using natural diatomite.The modified diatomite was characterized by scanning electron microscope and BET,and the optimal synthesis condition was determined.Adsorption effects were studied for heavy metal ions such as Pb2＋,Cu2＋,Cd2＋ and Zn2＋under the condition of static state.The influence of absorption effects conditions of modified diatomite played on were also studied for Pb2＋ as an example.Based on the experimental results,the possible absorption mechanism was investigated.%利用天然硅藻土为原料成功制备出具有高效吸附性能的碳酸钙改性硅藻土。通过扫描电子显微镜以及比表面测试仪对改性硅藻土进行了表征,研究确定了最佳的改性条件。在静态条件下,研究了改性硅藻土对重金属离子Pb2＋、Cu2＋、Zn2＋、Cd2＋的吸附效果,同时以Pb2＋为例探讨了吸附条件对吸附效果的影响。