Material and Heat Balances of Bioethanol Production Process by Concentrated Acid Saccharification Process from Lignocellulosic Biomass 


Vol. 17,  No. 2, pp. 156-165, Jun.  2011


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  Abstract

The process for bioethanol production from lignocellulosic biomass was studied through process simulation using PRO/II. Process integration was conducted with concentrated acid pretreatment, hydrolysis process, SMB (simulated moving bed chromatography) process and pervaporation process. Energy consumption could be minimized by the heat recovery process. In addition, material and energy balance were calculated based on the results from the simulation and literature data. A net production yield of 4.07 kg-biomass and energy consumption value of 3,572 kcal per 1 kg ethanol were calculated, which is indicating that 26% yield increase and 30% energy saving compared to the bioethanol production process with dilute-acid hydrolysis (SRI report). In order to make it possible, sugar conversion yield of cellulose and hemi-cellulose is to be reached up to 90% and fermentation of xylose needs to be developed. In order to reduce the energy consumption up to 30%, the concentration of acid solution after being separated by SMB should exceed 20%. If acid/sugar separation by SMB process is to be practical, the bioethanol process designed in this study can be commercially feasible.

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  Cite this article

[IEEE Style]

Kim, L. ES, K. W, S. DJ, A. BS, "Material and Heat Balances of Bioethanol Production Process by Concentrated Acid Saccharification Process from Lignocellulosic Biomass," Clean Technology, vol. 17, no. 2, pp. 156-165, 2011. DOI: .

[ACM Style]

Kim, Lee ES, Kim W, Suh DJ, and Ahn BS. 2011. Material and Heat Balances of Bioethanol Production Process by Concentrated Acid Saccharification Process from Lignocellulosic Biomass. Clean Technology, 17, 2, (2011), 156-165. DOI: .

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