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The development of a new efficient adsorbent for the removal of methylene blue

Author:
Voda, Raluca  Lupa, Lavinia  Negrea, Adina  Ciopec, Mihaela  Negrea, Petru  Davidescu, Corneliu M.  


Journal:
SEPARATION SCIENCE AND TECHNOLOGY


Issue Date:
2016


Abstract(summary):

The spinel ferrite CdFe2O4 was obtained through the thermal decomposition of cadmium ferrioxalate coordination compound. The precursor was obtained by a new unconventional method, through the reaction of 1, 2-ethanediol with Fe (NO3)(3)9H(2)O and Cd (NO3)(2)4H(2)O in the presence of nitric acid. The synthesized precursor was characterized by chemical analysis, IR vibrational spectrum and thermal analysis. The oxide was investigated by various methods such as IR, XRD and SEM. From the Langmuir isotherm, it was observed that the cadmium ferrite developed a maximum adsorption capacity of 4.86 mg methylene blue (MB)/g of adsorbent and is obtained a removal degree over 99%. It was found that the adsorption of MB onto ferrite is described by the pseudo-second-order kinetic model.


Page:
2511---2518


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