Irzaman, I., Cahyani, I., Aminullah, A., Maddu, A., Yuliarto, B., Siregar, U. (2020). Biosilica Properties from Rice Husk using Various HCl Concentrations and Frequency Sources. test, 63(2), 363-371. doi: 10.21608/ejchem.2019.8044.1679
Irzaman Irzaman; Indah Dwi Cahyani; Aminullah Aminullah; Akhiruddin Maddu; Brian Yuliarto; Ulfah Siregar. "Biosilica Properties from Rice Husk using Various HCl Concentrations and Frequency Sources". test, 63, 2, 2020, 363-371. doi: 10.21608/ejchem.2019.8044.1679
Irzaman, I., Cahyani, I., Aminullah, A., Maddu, A., Yuliarto, B., Siregar, U. (2020). 'Biosilica Properties from Rice Husk using Various HCl Concentrations and Frequency Sources', test, 63(2), pp. 363-371. doi: 10.21608/ejchem.2019.8044.1679
Irzaman, I., Cahyani, I., Aminullah, A., Maddu, A., Yuliarto, B., Siregar, U. Biosilica Properties from Rice Husk using Various HCl Concentrations and Frequency Sources. test, 2020; 63(2): 363-371. doi: 10.21608/ejchem.2019.8044.1679

Biosilica Properties from Rice Husk using Various HCl Concentrations and Frequency Sources

Egyptian Journal of Chemistry
Article 1, Volume 63, Issue 2, February 2020, Pages 363-371    PDF (2.52 M)
Document Type: Original Article
DOI: 10.21608/ejchem.2019.8044.1679
Authors
Irzaman Irzaman* 1; Indah Dwi Cahyani1; Aminullah Aminullah2; Akhiruddin Maddu1; Brian Yuliarto3; Ulfah Siregar4
1Department of Physics, Faculty of Mathematics and Natural Sciences, IPB University, Bogor, Indonesia
2Department of Food Technology and Nutrition, Faculty of Halal Food Science, Djuanda University, Bogor, Indonesia
3Department of Engineering Physics, Faculty of Engineering, Bandung Institute of Technology, Bandung, Indonesia
4Department of Silviculture, Faculty of Forestery, IPB University, Bogor, Indonesia
Abstract
Rice husk is a by-product of rice milling with more than 90% of silicon dioxide. The objective of this research was to characterize the purity and electricity as well as structure property and surface morphology of silicon dioxide depending on different concentration of chloride acid (HCl). The experimental consisted of leaching the rice husk using HCl solutions of 1%, 3%, and 5% for 2 hours and burning it at several annealing temperatures and times with temperature rate of 1 °C.min-1. The analysis included purity and morphology, structure property, and electricity of silicon dioxide using EDX-SEM, XRD, and LCR meter, respectively. The EDX measurement indicated that the higher the concentration of HCl, the higher the purity of silicon dioxide. Additionally, the higher the concentration of HCl led to the higher the electrical conductance, conductivity, and dielectric constant. While, the higher the frequency led to the higher the electrical conductance and conductivity but the lower the dielectric constant. Based on these electrical properties, silicon dioxide from rice husk can be applied as both an insulator and semiconductor materials on electronic devices.
Keywords
Electricity; HCl solvent; purity; rice husk; silicon dioxide
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