期刊名称：Chemical Industry and Chemical Engineering Quarterly
印刷版ISSN：1451-9372
出版年度：2019
卷号：25
期号：2
页码：107-117
DOI：10.2298/CICEQ180219024N
出版社：Association of the Chemical Engineers
摘要：The present study explores the uptake capacity of low-cost agricultural waste for the removal of heavy metals, Co2 , Cd2 and Zn2 , from aqueous solution. Studies conformed to Freundlich, Langmuir and Temkin adsorption isotherms. The values of constants for the thermodynamic and kinetic isotherms were found. The kinetic isotherm experiment data could be well described with the pseudo-second order kinetic model and thermodynamic studies indicated that the adsorption processes were spontaneous and endothermic with orange tree leaves under natural conditions. Experiments showed that Cd2 , Co2 and Zn2 adsorption increased with increasing pH and decreased with increasing the temperature and concentration of solutions. This study indicates that the developed method based on orange tree leaves is very simple, low-cost, fast and trusty for the removal of heavy metal ions from water and wastewater samples.
关键词：removal; heavy metals; adsorption isotherms; agricultural waste; isotherm
