The effect of dilute acid pre-treatment process in bioethanol production from durian (Durio zibethinus) seeds waste

International Conference on Advances in Renewable Energy and Technologies 2016

Ghazali, K.A.^1 ; Salleh, S.F.^1 ; Riayatsyah, T.M.I.^2 ; Aditiya, H.B.^3 ; Mahlia, T.M.I.^1

Centre of Renewable Energy, Universiti Tenaga Nasional, Kajang, Selangor

43000, Malaysia^1

Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur

50603, Malaysia^2

Department of Mechanical Engineering, University of Melbourne, VIC

3010, Australia^3

关键词: Bio-ethanol production;    Bioethanol fermentations;    Cellulosic biomass;    Fermentation process;    Lignin structure;    Lignocellulosic biomass;    Pretreatment process;    Substrate concentrations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/32/1/012058/pdf
DOI  :  10.1088/1755-1315/32/1/012058

来源: IOP

【 摘 要 】

Lignocellulosic biomass is one of the promising feedstocks for bioethanol production. The process starts from pre-treatment, hydrolysis, fermentation, distillation and finally obtaining the final product, ethanol. The efficiency of enzymatic hydrolysis of cellulosic biomass depends heavily on the effectiveness of the pre-treatment step which main function is to break the lignin structure of the biomass. This work aims to investigate the effects of dilute acid pre-treatment on the enzymatic hydrolysis of durian seeds waste to glucose and the subsequent bioethanol fermentation process. The yield of glucose from dilute acid pre-treated sample using 0.6% H2SO4and 5% substrate concentration shows significant value of 23.4951 g/L. Combination of dilute acid pre-treatment and enzymatic hydrolysis using 150U of enzyme able to yield 50.0944 g/L of glucose content higher compared to normal pre-treated sample of 8.1093 g/L. Dilute acid pre-treatment sample also shows stable and efficient yeast activity during fermentation process with lowest glucose content at 2.9636 g/L compared to 14.7583g/L for normal pre-treated sample. Based on the result, it can be concluded that dilute acid pre-treatment increase the yield of ethanol from bioethanol production process.