当前位置: X-MOL 学术J. Chem. Eng. Data › 论文详情
Adsorption of Nickel, Ni(II), in Aqueous Solution by Modified Zeolite as a Cation-Exchange Adsorbent
Journal of Chemical & Engineering Data ( IF 2.298 ) Pub Date : 2019-12-19 , DOI: 10.1021/acs.jced.9b00868
Hassan Pahlavanzadeh; Mahsa Motamedi

In this study, the modified zeolite (MZ) and zeolite 3A (RZ) were used as adsorbents for removal of Ni(II) from aqueous solution. Both adsorbents were characterized using scanning electron microscopy, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction. The process parameters were the ratio of modifier to adsorbent, adsorbent dosage, pH, time, initial metal concentration, and temperature. At 298 K and 200 ppm Ni(II), the optimal conditions for the modifier to zeolite 3A ratio, adsorbent dosage, pH, and time were 1.7, 12 kg/m3, 7, and 240 min, respectively. MZ adsorbed 95% of Ni(II) in optimal conditions which is 20% higher than RZ in the same experimental conditions. Kinetic data for adsorption of Ni(II) on both adsorbents indicated pseudo-second order, Elovich and intra particle diffusion models fitted well with experimental data. Among the isotherms, Langmuir and Freundlich fitted well for adsorption of Ni(II) on MZ, with qm = 0.433 mol/kg (298 K) while for RZ, the best fit was obtained by Langmuir, with qm = 0.28 mol/kg (298 K). At different temperatures, the thermodynamic parameters (ΔS0, ΔG0 and ΔH0) illustrated spontaneous and endothermic nature for adsorption of Ni(II) on MZ, and their values were 0.182 kJ/mol K, −5.89, 48.47 kJ/mol, respectively, at 298 K.
更新日期:2019-12-19

 

全部期刊列表>>
Springer Nature 2019高下载量文章和章节
化学/材料学中国作者研究精选
《科学报告》最新环境科学研究
ACS材料视界
自然科研论文编辑服务
中南大学国家杰青杨华明
剑桥大学-
中南大学
材料化学和生物传感方向博士后招聘
课题组网站
X-MOL
北京大学分子工程苏南研究院
华东师范大学分子机器及功能材料
中山大学化学工程与技术学院
试剂库存
天合科研
down
wechat
bug