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Extraction and characterization of γ-aAlumina from waste aluminium dross


Citation

Lai, Fok How and Islam, Aminul and Jaafar, Mohd Saleh and Yap, Taufiq Yun Hin (2017) Extraction and characterization of γ-aAlumina from waste aluminium dross. Waste and Biomass Valorization, 8 (2). 321 - 327. ISSN 1877-2641; ESSN: 1877-265X

Abstract

Aluminium (Al) dross, a chemical waste from an aluminium production factory in Malaysia, was used in this study for the recovery of aluminium in the form of γ-Al2O3. The different methods, such as acid leaching, alkaline precipitation at different pH and calcination steps were successfully applied to extract the γ-Al2O3 from Al dross. The products were characterized by X-ray diffraction, atomic absorption spectroscopy, X-ray fluorescence, thermogravimetric analysis, Brunauer–Emmett–Teller surface area analysis, particle size distribution and field emission scanning electron microscope. The results revealed that the γ-Al2O3 powders recovered from the Al dross has crystallite size around 5 nm, specific surface area between 111 and 128 m2/gwith different pore sizes. Thus, the present study illustrates an adequate utilization of the Al dross, which is, to date, neither adequately utilized nor properly dispensed in most of the developing countries.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Science
DOI Number: https://doi.org/10.1007/s12649-016-9591-4
Publisher: Springer
Keywords: Aluminium dross; γ-Al2O3; Precipitation; Leaching
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 30 Jan 2019 05:35
Last Modified: 30 Jan 2019 05:35
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1007/s12649-016-9591-4
URI: http://psasir.upm.edu.my/id/eprint/61827
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