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CHARACTERIZATION AND TESTING OF THE MAGHEMITE NANOPARTICLES USED FOR REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS SYNTHETIC SOLUTIONS
Autori: Andra Mihaela Predescu, Andrei Predescu, , Eugeniu Vasile
Data aparitiei: November/2011
Revista: Environmental Engineering and Management JournalVol. 10Nr. 11
ISSN: 1843 - 3707
Pret: Gratuit    
Format PDF Format PDF
Abstract:

The paper refers at adsorption studies using the maghemite nanoparticles as adsorbent for removal of the hexavalent chromium from aqueous synthetic solutions. Adsorption reached at equilibrium within 10 minutes and was registered as maximum at pH 2.54. The adsorption data were analyzed and fitted by Langmuir isotherm. Investigation methods for characterization of the nanoparticles were X-ray diffraction, scanning and transmission electron microscopy. Also, in order to evaluate the hexavalent chromium concentration the atomic and molecular absorption spectrometry were used.


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