Publication: The effect of dilute acid pre-treatment process in bioethanol production from durian (Durio zibethinus) seeds waste
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Date
2016
Authors
Ghazali K.A.
Salleh S.F.
Riayatsyah T.M.I.
Aditiya H.B.
Mahlia T.M.I.
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Physics Publishing
Abstract
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% H2SO4 and 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.
Description
Bioethanol; Biomass; Distillation; Ethanol; Fermentation; Glucose; Hydrolysis; Process control; Waste treatment; Bio-ethanol production; Bioethanol fermentations; Cellulosic biomass; Fermentation process; Lignin structure; Lignocellulosic biomass; Pretreatment process; Substrate concentrations; Enzymatic hydrolysis; acid; biofuel; concentration (composition); enzyme activity; ethanol; fermentation; fruit; glucose; hydrolysis; lignin; phytomass; seed; substrate; waste treatment; yeast; Durio zibethinus