| Literature DB >> 30771637 |
Liang Zhao1, Muhammad R Azhar2, Xiaojie Li2, Xiaoguang Duan3, Hongqi Sun4, Shaobin Wang5, Xiangchen Fang6.
Abstract
Cerium is an important rare earth element (REE), which can be used for many high-tech applications. From the industrial and environmental viewpoints, it is imperative to recover Ce3+ ions from aqueous solution. Herein, HKUST-1 metal-organic framework (MOF) was applied for adsorption and recovery of Ce3+ from aqueous solution. HKUST-1 showed a high adsorption efficiency and remarkable capacity of 353 mg/g at pH = 6. The isotherm, kinetics, effect of pH value and adsorption mechanism of the Ce3+ adsorption process were also studied. The results showed that the adsorption process fitted the Langmuir adsorption model, and the pseudo-second-order model described the kinetics well. The mechanism and reusability in Ce3+ adsorption were systematically investigated by various characterization techniques, suggesting the possible ion exchange between Ce3+ and Cu2+ and the formation of CeO covalent bonding. This work opens up a new way for Ce3+ recovery from water.Entities:
Keywords: Adsorption; Cerium (III); HKUST-1; Metal-organic framework
Year: 2019 PMID： 30771637 DOI： 10.1016/j.jcis.2019.01.117
Source DB: PubMed Journal: J Colloid Interface Sci ISSN： 0021-9797 Impact factor: 8.128