Material and Heat Balances of Bioethanol Production Process by Concentrated Acid Saccharification Process from Lignocellulosic Biomass
- Material and Heat Balances of Bioethanol Production Process by Concentrated Acid Saccharification Process from Lignocellulosic Biomass
- 김희영; 이의수; 김원석; 서동진; 안병성
- Bioethanol production; Lignocellulose; Pretreatment; Pervaporation; Lignocellulosic biomass; Process simulation; Concentrated acid pretreatment
- Issue Date
- Clean technology; 청정기술
- VOL 17, NO 2, 156-165
- 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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