Static removal of copper (II) from aqueous solutions by hematite

被引：10
|
作者：
Chakravarty, R [1 ]
Prasad, G [1 ]
Raupainwar, DC [1 ]
机构：
[1] Banaras Hindu Univ, Inst Technol, Dept Appl Chem, Varanasi 221005, Uttar Pradesh, India
来源：
ENVIRONMENTAL TECHNOLOGY | 1998年 / 19卷 / 03期
关键词：
adsorption kinetics; hematite; copper removal; Langmuir; Freundlich;
D O I：
10.1080/09593331908616686
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study examines the adsorption characteristics for the removal of copper (II) from aqueous solution using natural hematite which is available in abundance in this country. The static characterisation of the kinetics of the adsorption process has been studied using batch experiments at different adsorbate/adsorbent ratios for pH for fixed ionic strength. Adsorption isotherms have been modelled with the help of both Langmuir and Freundlich formulae. The dependence of the adsorption of the metal ion on the pH of the solution has been studied to achieve a better understanding of the adsorption mechanism. it has been found that maximum adsorption of Cu(II) from aqueous solution takes place at a pH value of 8.0. It has been concluded that the adsorption process comprises monolayer adsorption followed by intraparticle diffusion.
引用
收藏
页码：315 / 322
页数：8
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