...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Surfactants and Detergents >Anionic Surfactant Impregnation in Solid Waste for Cu2+ Adsorption: Study of Kinetics, Equilibrium Isotherms, and Thermodynamic Parameters
【24h】

Anionic Surfactant Impregnation in Solid Waste for Cu2+ Adsorption: Study of Kinetics, Equilibrium Isotherms, and Thermodynamic Parameters

机译：Cu2 +吸附固体废物中的阴离子表面活性剂浸渍：动力学，平衡等温和热力学参数的研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Coconut shell powder (CP) and diatomite (Di) were modified with microemulsion (mu E), producing low-cost adsorbents for copper (II) removal from aqueous solutions. The mu E was prepared using as active phase an anionic surfactant sodium octanoate (SO), obtained from the saponification of octanoic acid. The effect of modification on the adsorption capacity of Cu+2 was evaluated taking into consideration the solution pH, equilibrium time, temperature, and initial concentration of metal in solution. The adsorbents were analyzed by characterization techniques of X-Ray Fluorescence, scanning electron microscope and Fourier Transform Infrared Spectroscopy. The obtained experimental data were analyzed using the equations of Langmuir, Freundlich, Temkin, and Dubinin Radushkevich models. The initial concentration of 50 mg Cu+2/L solution and 0.2 g of adsorbent materials modified with the mu E presented a Cu+2 removal efficiency of 86.81% and 96.3% for CP and Di, respectively. The kinetic models of pseudo first-order, pseudo second-order, Elovich, and intraparticle diffusion were used in this study to describe the adsorption rate. The presence of sodium octanoate functional (OS) group provided ion exchange sites suitable to Cu+2 adsorption. The stability of the OS impregnation using microemulsion was evaluated based on a desorption study.
机译：用微乳液（MU E）改性椰壳粉末（CP）和硅藻土（DI），产生从水溶液中除去铜（II）的低成本吸附剂。使用作为活性相的阴离子表面活性剂辛酸钠（SO）制备MU E，从辛酸的皂化中获得。考虑溶液中溶液pH，平衡时间，温度和初始浓度，评估改性对Cu + 2的吸附容量的影响。通过X射线荧光，扫描电子显微镜和傅里叶变换红外光谱分辨率分析吸附剂。使用Langmuir，Freundlich，Temkin和Dubinin Radushkevich模型的方程分析所获得的实验数据。用MU E改性50mg Cu + 2 / L溶液的初始浓度和0.2g的吸附剂材料呈现出CP和DI的Cu + 2去除效率为86.81％和96.3％。本研究中使用了伪第一阶，伪二阶，ELOVICH和粒前扩散的动力学模型，描述了吸附速率。辛酸钠官能团（OS）组的存在提供了适合于Cu + 2吸附的离子交换位点。基于解吸研究评价了使用微乳液的OS浸渍的稳定性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号