Removal and recovery of cadmium from aqueous solutions using magnetic nanoparticle-modified sawdust: kinetics and adsorption isotherm studies

被引：28
|
作者：
Shah, Jasmin [1 ]
Jan, Muhammad Rasul [1 ]
Khan, Mansoor [1 ]
Amir, Salma [1 ]
机构：
[1] Univ Peshawar, Inst Chem Sci, Peshawar, KP, Pakistan
来源：
DESALINATION AND WATER TREATMENT | 2016年 / 57卷 / 21期
关键词：
Adsorption isotherm; Adsorption kinetics; Magnetic nanoparticles; Cd(II); Sawdust; WASTE-WATER; RAPID REMOVAL; HEAVY-METALS; CD(II); PRECONCENTRATION; CD; BIOSORPTION; PB(II); CARBON; PHASE;
D O I：
10.1080/19443994.2015.1030777
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Removal and recovery of Cd(II) was studied on sawdust modified with magnetic nanoparticles, Fe3O4 (MNP), from aqueous solution. MNP were prepared, loaded on sawdust, and characterized using scanning electron microscopy and surface area analyzer. The parameters for removal percentage of Cd(II) from aqueous solutions were studied such as pH, contact time, and concentration of Cd(II). Results for kinetics studies revealed that Cd(II) removal followed pseudo-second-order kinetics and the q(e) calculated values (22.17mgg(-1)) were in close agreement with experimental values (22.45mgg(-1)) with a high value of correlation coefficient (R-2=0.9994). The adsorption isotherm data were followed by Langmuir isotherm model adsorption studies. The adsorption capacity (Q(o)) was found to be 1,000mgg(-1), 588.5mgg(-1), and 403.7mgg(-1) for SD-MNP, MNP, and SD, respectively.
引用
收藏
页码：9736 / 9744
页数：9
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