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Pure SiO2 extraction through aluminosilicates synthesis from incinerated solid wastes

Vu Dinh Hieu, Bui Xuan‑Nam, Bui Hoang‑Bac, Ngo Thi Thanh Nga

Inżynieria Mineralna

2019

R. 21, nr 2/2

199--210

In this study, Pure SiO2 solution extraction from incenerated solid wastes following after aluminosilicate synthesis. The optimum conditions for obtaining both the pure SiO2 solution and the substantial amounts of unique residue material should be 200°C of reaction temperature, 1:30 of sample: NaOH, 2M NaOH, and enough reaction time over 24 hours. The optimization of the pure SiO2 extraction proposes an effective way for recycling the abundant incinerated solid waste as well as other waste ashes. Keywords: Solid wastes, Coal fly ash, Synthesis, SiO2 solution extraction.