Kinetics of heavy metal ions removal by use of natural zeolite

被引：101

作者：

Panayotova, M ^{[1
]}

Velikov, B ^{[1
]}

机构：

[1] Univ Min & Geol, Dept Chem, Sofia 1700, Bulgaria

来源：

JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING | 2002年 / 37卷 / 02期

关键词：

heavy metals; wastewater treatment; natural zeolite;

D O I：

10.1081/ESE-120002578

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Kinetics of the uptake of cadmium, lead, copper, nickel and zinc ions from single ion solutions and from their mixture by zeolitic rock has been studied. Removal of ions obeyed the kinetic equation for adsorption. Corresponding adsorption constants and distribution coefficients were determined for each metal ion uptake from single ion solution or mixture. An attempt was made to explain zeolite selectivity to different metal ions and the influence of water hardness on the uptake in terms of metal ionic radii and enthalpy of hydration. It was found that lead ions were strongly immobilized by the zeolite investigated, both from single ion and mixed solutions, as well as from soft and hard water.

引用

页码：139 / 147

页数：9

共 10 条

[1] Removal of Pb(II), Cd(II), Cu(II), and Zn(II) from aqueous solutions by adsorption on bentonite [J].