High Efficiency Conversion of Lignocellulosics to Sugars for Liquid Fuel Production by the ACOS Process
| Autor: | H.J. Cho, Laszlo Paszner |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
Pollution
Waste management Renewable Energy Sustainability and the Environment business.industry media_common.quotation_subject Fossil fuel 0211 other engineering and technologies Energy Engineering and Power Technology 02 engineering and technology 010502 geochemistry & geophysics 01 natural sciences Liquid fuel Fuel Technology Lead (geology) Nuclear Energy and Engineering Oil reserves Scientific method Environmental science Production (economics) 021108 energy business 0105 earth and related environmental sciences media_common |
| Zdroj: | Energy Exploration & Exploitation. 6:39-60 |
| ISSN: | 2048-4054 0144-5987 |
| DOI: | 10.1177/014459878800600104 |
| Popis: | Decline of world oil reserves and pollution problems from burning of fossil fuels and lead require that methods for safe alternate liquid fuels be developed. Ethanol is one of the most important alternate liquid fuels since it can be produced readily by fermentation of sugars. Wood and vegetable growth are excellent sources of sugars to support an ethanol fuel economy of significant proportions. Acid Catalysed Organosolv Saccharification (ACOS) is a new means for total biomass dissolution and recover of component sugars and lignin from wood. The process uses an acidified aqueous acetone solution for the high-temperature hydrolysis of biomass. Acetone provides an excellent reaction medium for dissolution of both sugars and lignins and through a transient derivatization of the sugars protects them from further reaction (dehydration) to furfurals and humic substances. Therefore, sugar and lignin recoveries are quantitative. The ACOS process is 700 times faster than the conventional weak acid hydrolysis processes and wood can be dissolved in 30 sec by this process. The lignin is recovered as a low molecular weight powder by-product. This process is applicable to both coniferous and deciduous woods and agricultural residues such as corn stover, straw and bagasse. In case of such residues the ethanol yield can be doubled (straw and corn stover) or tripled (bagasse) compared to what has been obtained from the grain and sugarcane juice so far. Hitherto these residues were merely discarded or burned. |
| Databáze: | OpenAIRE |
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