Utilization of Barley Straw as Feedstock for the Production of Different Energy Vectors
During the bioethanol production process, vast amounts of residues are generated as process waste. To extract more value from lignocellulosic biomass and improve process economics, these residues should be used as feedstock in additional processes for the production of energy or fuels. In this paper...
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| Veröffentlicht in: | Processes 2021, Vol.9 (4), p.726 |
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| creator | Raud, Merlin Rocha-Meneses, Lisandra Lane, Daniel J. Sippula, Olli Shurpali, Narasinha J. Kikas, Timo |
| description | During the bioethanol production process, vast amounts of residues are generated as process waste. To extract more value from lignocellulosic biomass and improve process economics, these residues should be used as feedstock in additional processes for the production of energy or fuels. In this paper, barley straw was used for bioethanol production and the residues were valorized using anaerobic digestion (AD) or used for the production of heat and power by combustion. A traditional three-step bioethanol production process was used, and the biomass residues obtained from different stages of the process were analyzed. Finally, mass and energy balances were calculated to quantify material flow and assess the different technological routes for biomass utilization. Up to 90 kg of ethanol could be produced from 1 t of biomass and additional biogas and energy generated from processing residues can increase the energy yield to over 220%. The results show that in terms of energy output, combustion was the preferable route for processing biomass residues. However, the production of biogas is also an attractive solution to increase revenue in the bioethanol production process. |
| doi_str_mv | 10.3390/pr9040726 |
| format | Article |
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To extract more value from lignocellulosic biomass and improve process economics, these residues should be used as feedstock in additional processes for the production of energy or fuels. In this paper, barley straw was used for bioethanol production and the residues were valorized using anaerobic digestion (AD) or used for the production of heat and power by combustion. A traditional three-step bioethanol production process was used, and the biomass residues obtained from different stages of the process were analyzed. Finally, mass and energy balances were calculated to quantify material flow and assess the different technological routes for biomass utilization. Up to 90 kg of ethanol could be produced from 1 t of biomass and additional biogas and energy generated from processing residues can increase the energy yield to over 220%. The results show that in terms of energy output, combustion was the preferable route for processing biomass residues. 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| subjects | Alternative energy sources Anaerobic digestion Barley Barley straw Biodiesel fuels Biofuels Biogas Biomass Biomass burning Cellulose Combustion Energy balance Energy output Enzymes Ethanol Experiments Fermentation Lignocellulose Raw materials Renewable resources Residues Straw Yeast |
| title | Utilization of Barley Straw as Feedstock for the Production of Different Energy Vectors |
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