摘要
使用SEM、EDS、IR、XRD等仪器,分析了马兰黄土的物化组成、表面结构及表面位浓度和阳离子交换容量等特征,并利用这些数据建立了马兰黄土-Cr(Ⅲ)的水岩相互作用模型及变初始浓度、去碳酸岩盐以及形态提取实验。通过对比模拟结果与实验结果,验证模型的可靠性,并初步获取了马兰黄土与水溶液中Cr(Ⅲ)作用过程中所发生的相关反应及其强度。结果显示,在实验浓度(1～100mg/L)范围内,该模型能够很好地描述马兰黄土与水中Cr(Ⅲ)的反应过程,其模型精度达90%。本成果将进一步丰富马兰黄土与Cr(Ⅲ)水岩相互作用的机理研究。
The results of column experiment and batch experiment show that the removal rate of Cr（Ⅲ） by the Malan loess could reach 95%.The surface characteristics of the Malan loess such as physico-chemical properties,surface structure,concentration of surface site,cation exchange capacity were analyzed with some advanced equipments,for example,SEM,EDS,IR,XRD,etc and the water-rock interaction modeling between the Malan loess and Cr（Ⅲ） was built.The different initial concentration experiment,non-calcites Malan loess experiment and the formation extraction experiment were designed.By comparing analyses of the simulating results and the experimental results,the reliability of the model was validated.The results show that the model precision was 90% when the concentration of solutions ranged from 1 to 100 mg /L,which give a good description of the reaction process.The result enriches the mechanism of water-rock interaction modeling between the Malan loess and Cr（Ⅲ）.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2011年第1期99-102,共4页
Hydrogeology & Engineering Geology
