Effect of sodium hydroxide concentrations and particle sizes on silica extraction from mineral rock obtained in Kalirejo village, Kokap, Kulonprogo, Yogyakarta

Setyoningrum, Tutik Muji and Murni, Sri Wahyu and Nandari, Wibiana Wulan and Nur, Muhamad Maulana Azimatun (2021) Effect of sodium hydroxide concentrations and particle sizes on silica extraction from mineral rock obtained in Kalirejo village, Kokap, Kulonprogo, Yogyakarta. Eksergi, 18 (1). pp. 29-31. ISSN 1410-394X

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Abstract

Silica is mainly used in the production of rubber, glass, cement, ceramics,
paper, cosmetics, electronics, paintings, healthcare and other industries. Kalirejo village has a
potential abundant resource of silica minerals. However, to refine the silica, a high cost of
extraction should be done to obtain high purity. Different refining methods influence the
quality of silica. The purpose of this research was to study the refining process of silica
obtained from Kalirejo village, Kokap, Kulonprogo by applying simple and cheap solid-liquid
extraction. The extraction was done by varying the particle size of the rock at 100 - 200 mesh,
while NaOH concentration was varied at 0.5 N to 5 N. Results showed that the mineral taken
from Kalirejo village was dominated by silica (23% m/m). The largest extract (4.89 gram)
was obtained at 200 mesh and using NaOH 5 N with yield of 15.07% m/m. Higher NaOH and
higher particle size enhanced the extraction yield. This finding could help small communities
in Kalirejo village to enhance the quality of silica by employing simple and cheap extraction
process.
Keywords: extraction, silica, particle size, NaOH

Item Type:	Article
Uncontrolled Keywords:	extraction, silica, particle size, NaOH
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User:	Dra., M.T SRI WAHYU MURNI
Date Deposited:	18 Oct 2022 08:16
Last Modified:	29 Dec 2022 03:55
URI:	http://eprints.upnyk.ac.id/id/eprint/31409

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