Synthetic of Pure Alumina from Aluminum Scrap

Abdul Shafiq Khan A. Najib Khan; Nur Ezzah Faezah Othman; Hadi Purwanto; Hafasihah Abdul Halim; Ahmad Firdaus Shamsul Baharin

doi:10.4028/www.scientific.net/AMR.1115.170

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1115Synthetic of Pure Alumina from Aluminum Scrap

Synthetic of Pure Alumina from Aluminum Scrap

Abstract:

Abundance in aluminum scrap metals can cause problem such as limited space allocation and pollution. The solution to solve these problems were by recycling the aluminum scrap metal as secondary production of aluminum. Among the recycling process alternative is smelting, However, the process consumes high energy with low productivity. This study focuses on alumina production from aluminum scrap waste. Dissolution process of Al scrap with 0.5M sodium hydroxide (NaOH) yields Al (OH)₃ and hydrogen gas. Results show that the temperature gradually decreased from 40°C to 35.7°C as the reaction took place. The pH of the solution during dissolution process increased from 12.08 to 12.38. The XRD results show that after calcination of Al (OH)₃powders at 1500°C, α-Al₂O₃ peaks could be observed. SEM morphology shows that the calcination process changes the Al (OH)₃powders from hexagonal shape to form α-Al₂O₃ with rounded shape.

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Periodical:

Advanced Materials Research (Volume 1115)

Pages:

170-173

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1115.170

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Online since:

July 2015

Authors:

Abdul Shafiq Khan A. Najib Khan*, Nur Ezzah Faezah Othman, Hadi Purwanto, Hafasihah Abdul Halim, Ahmad Firdaus Shamsul Baharin

Keywords:

Alumina, Aluminum Scrap, Calcination, Dissolution, Precipitation

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