摘要
分别对含有不同活度值的过饱和Ca(HCO3)2溶液进行无磁和有磁处理(磁场强度为0.4 T),监测处理过程中溶液的电导率和pH值,并用扫描电子显微镜(SEM)和X-射线衍射(XRD)分析其CaCO3结晶的形态和形貌.实验结果表明,在一定浓度范围内磁场可以提高溶液的电导率和pH值,溶液的浓度越高,磁化效果越弱;磁场作用后溶液的CaCO3结晶中文石含量明显提高.
Super saturated Ca（ HCO3 ）2 solution containing different Ca^2＋ activity is treated by a magnetic field with the strength of magnetic field of 0.4 T and without it, respectively. The conductivity and pH value of the solution are measured during the processes. The morphology and shape of CaCO3 crystal are analyzed by the scanning electronic microscope （SEM） and X- ray diffraction （XRD）. The results show that the magnetic treatment can enhance the conductivity and pH value of the solution at a certain range of concentration. Moreover, the higher the concentration of solution is, the lower the efficiency of magnetic treatment is. Passing feed solution through a magnetic field subsequently helps increase the content of aragonite in CaCO3 crystal.
出处
《天津工业大学学报》
CAS
2007年第4期36-40,共5页
Journal of Tiangong University
基金
天津市自然科学基金资助项目(043612611)
