Abstract
Amorphous silica (SiO2) made from natural sand has been synthesized through the precipitation method. The natural sand used comes from the coast of Bangka Belitung and the Lumajang river. The process parameters in this amorphous silica study were variations in NaOH concentrations of 6M, 7M and 8M. Characterization of the formation of amorphous silica includes XRD and XRF tests. Preliminary analysis using XRD shows that both types of sand are in the quartz phase. After extraction using NaOH and 2M HCl there was a change in the distribution angle of the two types of samples. The results of characterization and XRD analysis showed that the silica formed was in an amorphous phase. The highest purity of silica was produced at a concentration of 8M NaOH with an average percentage of 96.7% for Bangka Belitung beach sand and 96.2% for Lumajang river sand.
Original language | English |
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Article number | 070010 |
Journal | AIP Conference Proceedings |
Volume | 3074 |
Issue number | 1 |
DOIs | |
Publication status | Published - 11 Jun 2024 |
Event | 7th International Conference on Science and Applied Science, ICSAS 2022 - Virtual, Online, Indonesia Duration: 21 Oct 2022 → … |