Effect of Acidic salts on Characteristics of Precipitated Silica from Geothermal Sludge

DOI

10.2991/icst-18.2018.54How to use a DOI?

Keywords

Acidic salt, precipitated silica, geothermal sludge, silica alumina

Abstract

This research was carried out to produce precipitated silica from sodium silicate using acidic salt as precipitator. The aim of this research is to study the effects of acidic acid on precipitated silica characterization. The sodium silicate solution was produced by extraction of geothermal sludge using sodium hydroxide 2N solution. Precipitated silica products were characterized by x-ray diffraction, x-ray fluorescence and scanning electron microscopy. The results showed that the silica precipitated prepared by aluminum sulfate solution (1-3N) is a silica-alumina composite, amorphous structure and about 0.5 millimicron particle size. Precipitated silica with a concentration of 91-99 %SiO2 can be produced from sodium silicate solution using 1-3N sodium dihydrogenphospate solutions, have an amorphous structure and 1-2 millimicron particle size. Microscopically precipitated silica prepared by aluminum sulfate has a softer structure than that of precipitated silica prepared by sodium dihydrogen phosphate

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Srie Muljani
AU  - Ely Kurniati
PY  - 2018/12
DA  - 2018/12
TI  - Effect of Acidic salts on Characteristics of Precipitated Silica from Geothermal Sludge
BT  - Proceedings of the International Conference on Science and Technology (ICST 2018)
PB  - Atlantis Press
SP  - 259
EP  - 263
SN  - 2589-4943
UR  - https://doi.org/10.2991/icst-18.2018.54
DO  - 10.2991/icst-18.2018.54
ID  - Muljani2018/12
ER  -