摘要
以N-亚硝基苯胲铵与独居石的热力学和动力学特性为主要研究内容,系统研究了体系pH、矿浆温度、药剂浓度等条件对药剂在独居石表面吸附特性的影响。结果表明,准一级动力学方程可以很好的拟合N-亚硝基苯胲离子在独居石表面的动力学吸附行为,吸附过程的控制性步骤为矿物表面活性位点在矿物表膜中的扩散。平均吸附能及吸附等温线拟合结果显示,在所研究的条件下药剂在独居石表面的吸附属于物理吸附,吸附等温线同时符合Langmuir和Freundlich模型。
The adsorption properties of cupferron on monazite were taken as the subject of this paper. Thermodynamic and kinetic characteristics during adsorption process were studied in detail by varying pH values,reagent concentrations and adsorption time. Kinetic studies showed that the adsorption of cupferron on monazite accord well with pseudo-first order kinetic equation. The diffusion of mineral sites in surface film is the rate-limited step in the adsorption process. The results of adsorption thermodynamics indicated that both the Langmuir and the Freundlich models could be used to explain the adsorption process well. The mean adsorption energy data demonstrated that the adsorption is a simple physical process,under the studied conditions.
作者
刘明宝
李亮
裴丹
李航
杨涛
梁桃香
LIU Ming-bao;LI Liang;PEI Dan;LI Hang;YANG Tao;LIANG Tao-xiang(College of Chemical Engineering and Modem Material,Shangluo University,Shangluo 726000,China;Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources,Shangluo 726000,China)
出处
《稀土》
EI
CAS
CSCD
北大核心
2019年第6期74-80,共7页
Chinese Rare Earths
基金
国家自然科学基金面上项目(21973058)
陕西省科技惠民计划项目(2018ZY-HM-01)
陕西省自然科学基金项目(2016JΡ5059)
商洛学院重点学科建设项目
作者简介
通讯联系人:刘明宝(1982-),男,山东寿光人,博士,副教授,主要从事共伴生矿浮选分离技术及理论研究(E-mail:lmb74@163.com)。
