Rice Husk Ash Extraction Applied for Biosilica Reinforced Tire Tread Filler Compound

Abstract:

In the agricultural countries, rice husk is an abundant waste, especially as one of the largest sources of silica (SiO₂) production that can be produced. By complete combustion, to about 87% - 97% SiO₂ content can be produced from rice husks. Alkaline solution is used as a solvent in the solid-liquid extraction production of rice husk ash SiO₂. The mass of 10 grams of rice husk ash was weighed for the extraction process added with 80 ml of potassium hydroxide (KOH) solution with 10%, 15% and 20% various concentration to extract the SiO₂ content. In a systematic study, for 60 minutes the rice husks were soaked and washed using HCl and then heated in a muffle furnace. The results of this study showed that all samples are succeeded in homogenizing SiO₂ with purity close to 90%. Furthermore, through Energy-Dispersive X-ray Spectroscopy (EDS) analysis was proven these results obtained through solid-liquid extraction of KOH from rice husks. Natural SiO₂, known as biosilica, is useful and has potential in reinforcing compounds, including applications as filler in tires and natural rubber compounds.

• Periodical: Materials Science Forum (Volume 1067)
• Pages: 85-90
• DOI: https://doi.org/10.4028/p-h37ula
• Online since: August 2022
• Authors: Lydia Anggraini*, Nanang Sutisna, Rendi Hernawan
• Keywords: Biosilica, Characterization, Extraction, Rice Husk Ash, Tire Tread Filler

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