Scaling Up of the Pyrolysis Process to Produce Silica from Rice Husk

Journal of Engineering and Technological Sciences

Erliza Noor¹  Hartrisari Hadjomidjojo¹  Eti Rohaeti²  Irzaman Irzaman³  Casnan Casnan⁴ 

[1] Agroindustrial Technology Department, Agricultural Technology Faculty, Bogor Agricultural University, Kampus IPB Darmaga, Jalan Lingkar Akademik, Babakan, Kec. Dramaga, Bogor 16680;Chemistry Department, Faculty of Natural Sciences and Mathematics, Bogor Agricultural University, Kampus IPB, Jalan Meranti, Babakan, Kec. Dramaga, Bogor 16680;Physics Department, Faculty of Natural Sciences and Mathematics, Bogor Agricultural University, Kampus IPB, Jalan Meranti, Babakan, Kec. Dramaga, Bogor 16680;Program Study of Mathematics Education, STKIP Muhammadiyah Kuningan, Jalan Syeh Maulana Akbar, Kuningan 45511,;

关键词: modeling;    pyrolysis;    rice husk;    silica;    upscaling;   

DOI  :  10.5614/j.eng.technol.sci.2019.51.6.1

来源: DOAJ

【 摘 要 】

Rice husk is a potential alternative source of silica and silicon. The mechanism of heating (pyrolysis) for the decomposition of rice husk is an important factor in obtaining silica of high purity. Medium-scale pyrolysis to produce silica from rice husk serves as a bridge to connect laboratory-scale production to industrial-scale production. The purpose of this study was to model and scale up the pyrolysis process as a guidance for industrial-scale production. The research method used was experimentally based. An experimental investigation was undertaken in five stages. 1) Analyzing rice husk mass conversion using thermogravimetry analysis (TGA); 2) pyrolysis modeling based on a laboratory investigation using COMSOL Multiphysics version 5.3; 3) medium-scale experiments according to the modeling results; 4) validation of the modeling results by carrying out a medium-scale experiment; 5) silica purity analysis using SEM-EDX. The medium-scale pyrolysis simulation of silica manufacture from rice husk obtained a heating rate of 1.5 °C/min. There was an increase in the heating rate of 1 °C/min when compared to the laboratory-scale process. The pyrolysis of rice husk for the production of silica affects the mass conversion and selectivity of the resulting silica product. The mass conversion produced was 13.33% to 17.87% and the purity of silica produced was 63.99% to 82.74%.

【 授权许可】

Unknown