Magnetic graphene oxide based nano-composites for removal of radionuclides and metals from contaminated solutions

G Lujanienė; S Šemčuk; A Lečinskytė; I Kulakauskaitė; K Mažeika; D Valiulis; V Pakštas; M Skapas; S Tumėnas

doi:10.1016/j.jenvrad.2016.02.014

Magnetic graphene oxide based nano-composites for removal of radionuclides and metals from contaminated solutions

J Environ Radioact. 2017 Jan;166(Pt 1):166-174. doi: 10.1016/j.jenvrad.2016.02.014. Epub 2016 Feb 28.

Authors

G Lujanienė¹, S Šemčuk¹, A Lečinskytė¹, I Kulakauskaitė¹, K Mažeika¹, D Valiulis¹, V Pakštas¹, M Skapas¹, S Tumėnas¹

Affiliation

¹ SRI Center for Physical Sciences and Technology, Vilnius, Lithuania.

PMID: 26926959
DOI: 10.1016/j.jenvrad.2016.02.014

Abstract

Magnetic graphene oxide based composites of the nano-particle size of <10 nm were synthesized, characterized and used in sorption experiments. The adsorption of Cs(I), Co(II), Ni(II), Cu(II) and Pb(II) to nano-composites was studied in a wide range of initial concentrations and analyzed by Langmuir and Freundlich models. In addition, the effects of pH and coexisting ions on the adsorption of Cs to Prussian blue based composites were investigated. The maximum adsorption capacities of studied elements varied from 29 to 641 mg g^-1. The obtained Langmuir and Freundlich constants indicated the dominating physisorption mechanism and favorable adsorption conditions.

Keywords: Cs; Graphene oxide nano-composites; Metals; Prussian blue.

MeSH terms

Graphite / chemistry*
Magnetics
Metals / analysis
Metals / chemistry*
Radioisotopes / analysis
Radioisotopes / chemistry*
Waste Disposal, Fluid / methods*
Water Pollutants, Chemical / analysis
Water Pollutants, Chemical / chemistry*
Water Purification / methods

Substances

Metals
Radioisotopes
Water Pollutants, Chemical
Graphite