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All Journal Chemistry Indonesian Journal of Chemical Research
Muna Lisa
Chemistry Study Program, Mathematic and Natural Sciences Faculty, Lambung Mangkurat University, Banjarbaru, Indonesia
Biochemistry, Genetics & Molecular Biology Chemistry Engineering Environmental Science

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Silica Content Analysis of Rice Husks Siam Unus from South Kalimantan Dwi Rasy Mujiyanti; Dahlena Ariyani; Muna Lisa
Indonesian Journal of Chemical Research Vol 9 No 2 (2021): Edition for September 2021
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2020.9-muj

Abstract

Research on the analysis of rice husk content of Siam Unus with various NaOH concentrations (1.0 M; 1.5 M; 2.0 M; 2.5 M; 3.0 M) has been done. This study aims to obtain data on the effect of variations in NaOH concentration on the purity of the silica extract from Siam Unus rice husks and silica characterization of Siam Unus rice husks using Fourier Transform Infra-Red (FTIR) and X-ray fluorescence spectrometry (XRF). The results showed that the combustion of rice husks at 200 °C as the optimum temperature for 1 hour followed by combustion at 600 °C for 4 hours produces grayish-white rice husks with a yield is 20.70%. Silica functional group characterization showed that silanol (Si-OH) and siloxane (Si-O-Si) as dominant functional groups. The result of composition characterization using XRF showed that SiO2 is the dominant compound with the highest percentage of SiO2 is 1.5 M NaOH extract at 42.80%.
Co-Authors Dahlena Ariyani Dwi Rasy Mujiyanti