Synthesis of high-surface-area γ-Al                         2                         O                         3                          from aluminum scrap and its use for the adsorption of metals: Pb(II), Cd(II) and Zn(II)

Yvan J.O. Asencios; María R. Sun-Kou

doi:10.1016/j.apsusc.2012.06.063

Synthesis of high-surface-area γ-Al ₂ O ₃ from aluminum scrap and its use for the adsorption of metals: Pb(II), Cd(II) and Zn(II)

Yvan J.O. Asencios, María R. Sun-Kou

Sección de Química

Universidade de São Paulo

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

122 Scopus citations

Abstract

Several types of alumina were synthesized from sodium aluminate (NaAlO ₂ ) by precipitation with sulfuric acid (H ₂ SO ₄ ) and subsequently calcination at 500°C to obtain γ-Al ₂ O ₃ . The precursor aluminate was derived from aluminum scrap. The various γ-Al ₂ O ₃ synthesized were characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), adsorption-desorption of N ₂ (S _BET ) and scanning electron microscopy (SEM). XRD revealed that distinct phases of Al ₂ O ₃ were formed during thermal treatment. Moreover, it was observed that conditions of synthesis (pH, aging time and temperature) strongly affect the physicochemical properties of the alumina. A high-surface-area alumina (371 m ² g ^-1 ) was synthesized under mild conditions, from inexpensive raw materials. These aluminas were tested for the adsorption of Cd(II), Zn(II) and Pb(II) from aqueous solution at toxic metal concentrations, and isotherms were determined.

Original language	English
Pages (from-to)	10002-10011
Number of pages	10
Journal	Applied Surface Science
Volume	258
Issue number	24
DOIs	https://doi.org/10.1016/j.apsusc.2012.06.063
State	Published - 1 Oct 2012

Keywords

Adsorbent
Adsorption
Cadmium
Gamma alumina
Lead
Zinc

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title = "Synthesis of high-surface-area γ-Al 2 O 3 from aluminum scrap and its use for the adsorption of metals: Pb(II), Cd(II) and Zn(II)",

abstract = " Several types of alumina were synthesized from sodium aluminate (NaAlO 2 ) by precipitation with sulfuric acid (H 2 SO 4 ) and subsequently calcination at 500°C to obtain γ-Al 2 O 3 . The precursor aluminate was derived from aluminum scrap. The various γ-Al 2 O 3 synthesized were characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), adsorption-desorption of N 2 (S BET ) and scanning electron microscopy (SEM). XRD revealed that distinct phases of Al 2 O 3 were formed during thermal treatment. Moreover, it was observed that conditions of synthesis (pH, aging time and temperature) strongly affect the physicochemical properties of the alumina. A high-surface-area alumina (371 m 2 g -1 ) was synthesized under mild conditions, from inexpensive raw materials. These aluminas were tested for the adsorption of Cd(II), Zn(II) and Pb(II) from aqueous solution at toxic metal concentrations, and isotherms were determined.",

keywords = "Adsorbent, Adsorption, Cadmium, Gamma alumina, Lead, Zinc",

author = "Asencios, {Yvan J.O.} and Sun-Kou, {Mar{\'i}a R.}",

year = "2012",

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doi = "10.1016/j.apsusc.2012.06.063",

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volume = "258",

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journal = "Applied Surface Science",

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Synthesis of high-surface-area γ-Al ₂ O ₃ from aluminum scrap and its use for the adsorption of metals: Pb(II), Cd(II) and Zn(II). / Asencios, Yvan J.O.; Sun-Kou, María R.
In: Applied Surface Science, Vol. 258, No. 24, 01.10.2012, p. 10002-10011.

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

TY - JOUR

T1 - Synthesis of high-surface-area γ-Al 2 O 3 from aluminum scrap and its use for the adsorption of metals

T2 - Pb(II), Cd(II) and Zn(II)

AU - Asencios, Yvan J.O.

AU - Sun-Kou, María R.

PY - 2012/10/1

Y1 - 2012/10/1

N2 - Several types of alumina were synthesized from sodium aluminate (NaAlO 2 ) by precipitation with sulfuric acid (H 2 SO 4 ) and subsequently calcination at 500°C to obtain γ-Al 2 O 3 . The precursor aluminate was derived from aluminum scrap. The various γ-Al 2 O 3 synthesized were characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), adsorption-desorption of N 2 (S BET ) and scanning electron microscopy (SEM). XRD revealed that distinct phases of Al 2 O 3 were formed during thermal treatment. Moreover, it was observed that conditions of synthesis (pH, aging time and temperature) strongly affect the physicochemical properties of the alumina. A high-surface-area alumina (371 m 2 g -1 ) was synthesized under mild conditions, from inexpensive raw materials. These aluminas were tested for the adsorption of Cd(II), Zn(II) and Pb(II) from aqueous solution at toxic metal concentrations, and isotherms were determined.

AB - Several types of alumina were synthesized from sodium aluminate (NaAlO 2 ) by precipitation with sulfuric acid (H 2 SO 4 ) and subsequently calcination at 500°C to obtain γ-Al 2 O 3 . The precursor aluminate was derived from aluminum scrap. The various γ-Al 2 O 3 synthesized were characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), adsorption-desorption of N 2 (S BET ) and scanning electron microscopy (SEM). XRD revealed that distinct phases of Al 2 O 3 were formed during thermal treatment. Moreover, it was observed that conditions of synthesis (pH, aging time and temperature) strongly affect the physicochemical properties of the alumina. A high-surface-area alumina (371 m 2 g -1 ) was synthesized under mild conditions, from inexpensive raw materials. These aluminas were tested for the adsorption of Cd(II), Zn(II) and Pb(II) from aqueous solution at toxic metal concentrations, and isotherms were determined.

KW - Adsorbent

KW - Adsorption

KW - Cadmium

KW - Gamma alumina

KW - Lead

KW - Zinc

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IS - 24

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Synthesis of high-surface-area γ-Al ₂ O ₃ from aluminum scrap and its use for the adsorption of metals: Pb(II), Cd(II) and Zn(II)

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