Sorption of uranium(VI) from aqueous solutions by akaganeite

Sabriye (Doyurum) Yusan; Sema Akyil

doi:10.1016/j.jhazmat.2008.03.009

Sorption of uranium(VI) from aqueous solutions by akaganeite

Sabriye (Doyurum) Yusan^*, Sema Akyil

^*Corresponding author for this work

Ege University

Research output: Contribution to journal › Article › peer-review

135 Citations (Scopus)

Abstract

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).

Original language	English
Pages (from-to)	388-395
Number of pages	8
Journal	Journal of Hazardous Materials
Volume	160
Issue number	2-3
DOIs	https://doi.org/10.1016/j.jhazmat.2008.03.009
Publication status	Published - 30 Dec 2008
Externally published	Yes

Keywords

Adsorption isotherms
Iron oxides
Sorption
Thermodynamic constants
Uranium(VI)

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10.1016/j.jhazmat.2008.03.009

Cite this

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title = "Sorption of uranium(VI) from aqueous solutions by akaganeite",

abstract = "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).",

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author = "Yusan, {Sabriye (Doyurum)} and Sema Akyil",

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doi = "10.1016/j.jhazmat.2008.03.009",

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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)

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JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

IS - 2-3

ER -

Sorption of uranium(VI) from aqueous solutions by akaganeite

Abstract

Keywords

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