期刊
ENVIRONMENTAL TECHNOLOGY
卷 36, 期 2, 页码 188-197出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09593330.2014.941942
关键词
Cd2+ adsorption; KFeP2O7/SiO2 adsorbent; isotherms; thermodynamics; kinetics
资金
- Department of Chemistry of ININ, Mexico [CB-207]
- ININ
Nanoparticles of iron and potassium diphosphate (KFeP2O7) implanted in silica gel beads (SiO2) have been investigated as an alternative adsorbent for removing Cd2+ ions from aqueous solutions. Batch adsorption experiments were conducted as a function of contact time, adsorbent dosage, initial cadmium ion concentration, solution pH, and temperature. Kinetic and thermodynamic studies on the cadmium adsorption onto KFeP2O7/SiO2 include a complete analysis and discussion. The equilibrium data were well described by the Freundlich isotherm model. The adsorption kinetic of cadmium on KFeP2O7/SiO2 followed a pseudo-first-order kinetic model obtained by using nonlinear regression analysis. Thermodynamic parameters (enthalpy change, free energy change, and entropy change) indicated that the Cd2+ adsorption process was spontaneous and exothermic in nature. The results showed that the studied KFeP2O7 nanomaterial implanted in silica is an effective adsorbent for cadmium ion removal from wastewater.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据