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Journal of Radioanalytical and Nuclear Chemistry

, Volume 299, Issue 1, pp 665–674 | Cite as

Adsorptive removal of La(III) from aqueous solutions with 8-hydroxyquinoline immobilized GMZ bentonite

  • Yonggui ChenEmail author
  • Runqiu Huang
  • Chunming ZhuEmail author
  • Dongbei WuEmail author
  • Yanhong Sun
  • Yong He
  • Weimin Ye
Article

Abstract

Due to the low permeability, high swelling capacity and good retardation properties, bentonite has been considered as the main component of buffer/backfill material for high level radioactive wastes repository all over the world. The adsorptions of metal ion were widely investigated recently. In this presentation, we provide an easy-to-use method to immobilize 8-hydroxyquinoline onto the surface of bentonite for the use of adsorption studies of La(III) from the aqueous solution. The effects of various parameters such as contact time, pH of the solution, ionic strength and metal ion concentration on the adsorption were investigated by the batch experiments. The biggest adsorption capacity is 41.7 mg/g, higher than the value reported by our previous work which is performed by the raw bentonite. Langmuir isotherm fits the experimental data well and the adsorption follows pseudo-second-order kinetic model. In summary, 8-hydroxyquinoline immobilized GMZ bentonite is an effective adsorbent for the removal of La(III) from aqueous solutions.

Keywords

GMZ bentonite La(III) Adsorption 8-Hydroxyquinoline 

Notes

Acknowledgments

The present work has been carried out under the financial supports of “National Natural Science Foundation of China (41272287 and 41030748)”, “Hunan Provincial Natural Science Foundation of China (12JJ3055)”, “Innovation Program of Shanghai Municipal Education Commission (12ZZ032)”, “the Fundamental Research Funds for the Central Universities”, “Pujiang Program of Shanghai (13PJD029)” and “Opening fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology (SKLGP2013K004)”.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2013

Authors and Affiliations

  1. 1.Key Laboratory of Geotechnical & Underground Engineering of Ministry of Education and Department of Geotechnical EngineeringTongji UniversityShanghaiPeople’s Republic of China
  2. 2.State Key Laboratory of Geohazard Prevention and Geoenvironment ProtectionChengdu University of TechnologyChengduPeople’s Republic of China
  3. 3.School of Civil Engineering and ArchitectureChangsha University of Science and TechnologyChangshaPeople’s Republic of China
  4. 4.Department of ChemistryTongji UniversityShanghaiPeople’s Republic of China

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