Hydrodynamic Analysis of Hydrolysis of the Rice Husk Cellulose by Using CFD Modeling

1st International Symposium of Indonesian Chemical Engineering 2018

Novia, N.^1 ; Cundari, L.^1 ; Jannah, A.M.^1 ; Haphsari, M.K.^1 ; Zulfani, M.^1

Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya, Jl. Raya Indralaya-Prabumulih KM. 32, Sumatera Selatan

30662, Indonesia^1

关键词: Acid hydrolysis;    Acid pretreatment;    Alternative materials;    CFD modeling;    Glucose concentration;    Hydrodynamic analysis;    Pre-Treatment;    Soaking in aqueous ammonias;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/543/1/012046/pdf
DOI  :  10.1088/1757-899X/543/1/012046

来源: IOP

【 摘 要 】

The importance of the rule and the demand of glucose trigger the seeking of the alternative materials to produce glucose. One of the alternatives used is the utilization of biomass such as the rice husk to produce glucose. Rice husk is the agricultural residue whose availability is very abundant. In this research, rice husk contained cellulose (42.2 %), hemicellulose (17.04 %), and lignin (20.46 %). First step to produce the glucose from rice husk was pretreatment stages (Soaking in Aqueous Ammonia pretreatment and Acid pretreatment). Furthermore it was followed by the acid hydrolysis step by using dilute H2SO4 solution. The concentration of H2SO4 used in this work was 1, 2, and 3 N with the various hydrolysis times of 30, 60, 90, 120, and 150 min. The result showed that increasing of hydrolysis time slightly increased glucose concentration. The highest glucose concentration was about 21.51% at H2SO4 concentration of 2 N and the hydrolysis time of 150 min. CFD modeling (ANSYS Fluent 16) was performed to investigate the hydrodynamic phenomena during hydrolysis. The hydrodynamic analysis showed that the best mixing occurred at H2SO4 concentration of 2 N for 150 min. It is a good agreement with the experimental finding.