淀粉微球对Pb^(2+)的吸附及动力学研究  

STUDY ON ADSORPTION AND KINETICS OF FOR STARCH MICROSPHERE Pb^(2+)

作　　者：苏秀霞[1] 杨祥龙[1] 李仲谨[1] 刘节根[1] 诸晓锋[1] 

机构地区：[1]陕西科技大学,教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《水处理技术》2009年第4期57-60,共4页Technology of Water Treatment

基　　金：国家自然科学基金资助项目(50573046);陕西省教育厅产业化培育项目(02JC05);陕西科技大学研究生创新基金资助

摘　　要：以淀粉微球(CSM)为载体,研究了微球吸附Pb2+时pH、温度、溶液浓度对吸附量的影响及对Pb2+的吸附动力学特性,利用红外(FT-IR)、SEM和X射线衍射仪(XRD)对微球进行表征。结果表明,其吸附最适pH为5～6,在一定的温度范围内,随吸附温度的升高,吸附量增大;微球对Pb2+吸附行为符合Langmiur方程和Freundlich方程;且求得吸附表观活化能为Ea=2.210kJ·mol-1。The cross-linked starch microsphcres were used as carder to adsorb Pb^2＋ from aqueous solution, and the effect of the pH, temperature, concentration of Pb^2＋ aqueous solution on adsorption amount was investigated. The kinetics of the adsorption process was also studied. The starch microsphere was characterized by Scan electron microscope, Fourier transform infrared spectroscopy （FTIR） and X-ray diffraction （XRD）. The results showed that the optimum pH value of adsorption was 5 -6,to certain degree, The adsorption capacity in creased with temperature .the adsorption behavior of the microspheres for Pb^2＋ is adapted to Langmuir and Freundlich adsorption isotherm equation.and the apparent adsorption activation energy is 2.210 kJ-mol^-1

关 键 词：淀粉微球 吸附 PB2+ 动力学 

分 类 号：TQ424[化学工程]