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Waste to Wealth: Coal Fly Ash to Na-a-Zeolites
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Coal fly ash (CFA), a by-product of power generation, is rich in silica and alumina. Using the Box-Behnken Design(incorporating statistical software) and a domestic microwave oven, the silica and alumina have been successfully extracted from the CFA. The concentration of Si4+ and AI3+ ions were determined by ICP-OES and found to be comparable with those obtained from the thermal extraction reactions at 550C. Prior to hydrothermal treatment, the silica to alumina ratio in the extracts was adjusted using aluminium foil and the products were found to be gibbsite.

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Research Management Centre (RMC), Universiti Tenaga Nasional
43009 Kajang
Selangor
Malaysia

Full Name [1]
Assoc Prof Dr. Rose Aini Kamarudin