Reduction of silicon dioxide from bamboo leaves and its analysis using energy dispersive x-ray and fourier transform-infrared

3rd International Conference on Biomass: Accelerating the Technical Development and Commercialization for Sustainable Bio-based Products and Energy

生物科学;能源学;经济学

Aminullah^1 ; Rohaeti, E.^2 ; Yuliarto, B.^3 ; Irzaman^4,5

Department of Food Technology and Nutrition, Djuanda University, Bogor

16720, Indonesia^1

Department of Chemistry, Bogor Agricultural University, Bogor

16680, Indonesia^2

Department of Engineering Physics, Bandung Institute of Technology, Bandung

40132, Indonesia^3

Departemen of Physics, Bogor Agricultural University, Bogor

16680, Indonesia^4

Surfactant and Bioenergy Researc Center, Bogor Agricultural University, Bogor

16143, Indonesia^5

关键词: Asymmetric stretching;    Bending vibrations;    Effect of temperature;    Energy dispersive x-ray;    Force constants;    Fourier transform infra reds;    Organic materials;    Silica content;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/209/1/012048/pdf
DOI  :  10.1088/1755-1315/209/1/012048

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

Silicon dioxide or silica from the organic materials such as bamboo leaf ash (BLA) was interesting because of its large content of 76-80% and it was the main ingredient in glass and solar cell industries. The objective was to study the effect of temperature rate and the acid leaching to silica content in bamboo leaves. This study consists of two main stages, namely 1) ashing the leaves which was conducted through burning the dry leaves and ashing the bamboo leaves charcoal with temperature rates of 0.3, 0.4, and 0.5 ?C/min, and 2) reducting the silica which was conducted through leaching the ash with HCl 3% and then heating in a furnace. The results showed that BLA has a yield of 18.10 - 18.64% to dried bamboo leaves. Silica at rates of 0.3, 0.4, and 0.5 ?C/min resulted in purity levels of 65.85, 74.49, and 72.69%, respectively. Silica still contained a low percentage impurities, namely rubidium oxide, aluminum oxide, and iron oxide. In addition, FTIR analysis showed that the silica rates of 0.3, 0.4, and 0.5 ?C/min have absorption band at wave numbers of 1095 cm-1, 802 cm-1 and 455-463 cm-1 which indicated the asymmetric stretching vibration and bending vibration Si-O of siloxane groups (Si-O-Si) with force constant of 1030.531 N.m-1.