TY - JOUR
T1 - Sorption of uranium(VI) from aqueous solutions by akaganeite
AU - Yusan, Sabriye (Doyurum)
AU - Akyil, Sema
PY - 2008/12/30
Y1 - 2008/12/30
N2 - Removal of U(VI) ions from aqueous solutions was investigated using synthetic akaganeite-type nanocrystals. Nanocrystals of iron oxyhydroxides were synthesized with two different methods and then compared their adsorption capacities. Akaganeite (β-FeOOH) was synthesized in the laboratory by precipitation from aqueous solution of Fe(III) chloride and different precipitating agents. The relative importance of test parameters like solution pH, contact time, temperature and concentration of adsorbate on adsorption performance of akaganeite for U(VI) ion were studied. Typical adsorption isotherms (Langmuir, Freundlich, Dubinin-Raduskevich) were determined for the mechanism of sorption process. Also the thermodynamic constants (ΔH°, ΔS° and ΔG°) were calculated. The product materials were examined by powder X-ray diffraction for crystalline phase identification and scanning electron microscope (SEM).
AB - Removal of U(VI) ions from aqueous solutions was investigated using synthetic akaganeite-type nanocrystals. Nanocrystals of iron oxyhydroxides were synthesized with two different methods and then compared their adsorption capacities. Akaganeite (β-FeOOH) was synthesized in the laboratory by precipitation from aqueous solution of Fe(III) chloride and different precipitating agents. The relative importance of test parameters like solution pH, contact time, temperature and concentration of adsorbate on adsorption performance of akaganeite for U(VI) ion were studied. Typical adsorption isotherms (Langmuir, Freundlich, Dubinin-Raduskevich) were determined for the mechanism of sorption process. Also the thermodynamic constants (ΔH°, ΔS° and ΔG°) were calculated. The product materials were examined by powder X-ray diffraction for crystalline phase identification and scanning electron microscope (SEM).
KW - Adsorption isotherms
KW - Iron oxides
KW - Sorption
KW - Thermodynamic constants
KW - Uranium(VI)
UR - http://www.scopus.com/inward/record.url?scp=54549092125&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2008.03.009
DO - 10.1016/j.jhazmat.2008.03.009
M3 - Article
C2 - 18406521
AN - SCOPUS:54549092125
SN - 0304-3894
VL - 160
SP - 388
EP - 395
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 2-3
ER -