TY - JOUR
T1 - Synthesis of iron-based adsorbents and their application in the adsorption of molybdenum ions in nitric acid solution
AU - Dodbiba, Gjergj
AU - Fujita, Toyohisa
AU - Kikuchi, Takahiro
AU - Manjanna, Jayappa
AU - Matsuo, Seiji
AU - Takahashi, Hideyuki
AU - Tohji, Kazuyuki
N1 - Funding Information:
The present study includes the result of “Development of separation technology of transuranium elements and fission products using new extractants and adsorbents” entrusted to Japan Atomic Energy Agency by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT). This research was also supported in part through the Global COE Program, “ Global Center of Excellence for Mechanical Systems Innovation,” by MEXT . In addition, the authors gratefully acknowledge the technical support provided by Mr. Kazuhiro Fukawa of the University of Tokyo in caring out the XRD analysis.
PY - 2011/1/15
Y1 - 2011/1/15
N2 - A series of " easy-to-prepare" powders was synthesized and their application in the adsorption of Mo ions in 3. mol/L nitric acid solution was investigated. The powders were also calcinated at various temperatures, which effect was investigated as a function of the dissolved Fe concentration in the solution. In addition, the equilibrium sorption isotherm of Mo onto Fe-based adsorbent was analyzed by the Langmuir, Freundlich and Redlich-Peterson sorption models, whereas the adsorption kinetic was analyzed using the intraparticle diffusion model and the pseudo-second order kinetic model. The overall adsorption process was described well by the pseudo-second order kinetic model. It was found that the amount of Mo(VI) ion sorbed at equilibrium was 8.3126. mg/g, with 83% of Mo adsorption occurring the first 10. min and attaining equilibrium was at ca. 150. min. This behavior suggests that the sorption takes place rapidly on the external surface of the adsorbent where the binding may be through interaction with the functional groups located on the surface of the adsorbent.
AB - A series of " easy-to-prepare" powders was synthesized and their application in the adsorption of Mo ions in 3. mol/L nitric acid solution was investigated. The powders were also calcinated at various temperatures, which effect was investigated as a function of the dissolved Fe concentration in the solution. In addition, the equilibrium sorption isotherm of Mo onto Fe-based adsorbent was analyzed by the Langmuir, Freundlich and Redlich-Peterson sorption models, whereas the adsorption kinetic was analyzed using the intraparticle diffusion model and the pseudo-second order kinetic model. The overall adsorption process was described well by the pseudo-second order kinetic model. It was found that the amount of Mo(VI) ion sorbed at equilibrium was 8.3126. mg/g, with 83% of Mo adsorption occurring the first 10. min and attaining equilibrium was at ca. 150. min. This behavior suggests that the sorption takes place rapidly on the external surface of the adsorbent where the binding may be through interaction with the functional groups located on the surface of the adsorbent.
KW - Adsorption
KW - Fe-based adsorbent
KW - HLLW
KW - Molybdenum
KW - Nitric acid solution
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U2 - 10.1016/j.cej.2010.10.079
DO - 10.1016/j.cej.2010.10.079
M3 - Article
AN - SCOPUS:78650514462
VL - 166
SP - 496
EP - 503
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
IS - 2
ER -