High-pressure carbon dioxide/water pre-treatment of sugarcane bagasse and elephant grass: Assessment of the effect of biomass composition on process efficiency
| Autor: | Susana M. Paixão, Rafal M. Lukasik, Aldo José Pinheiro Dillon, Marli Camassola, Jürgen Andreaus, Andréia Toscan, Luís Alves, Ana Rita C. Morais |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Pennisetum Environmental Engineering Severity factor Carbohydrates Biomass Bioengineering Xylose Lignin 01 natural sciences chemistry.chemical_compound 010608 biotechnology Botany Pressure Hemicellulose Cellulose Glucans Waste Management and Disposal 010405 organic chemistry Renewable Energy Sustainability and the Environment Hydrolysis Water food and beverages General Medicine Carbon Dioxide Biorefinery Pulp and paper industry Saccharum 0104 chemical sciences Glucose chemistry Biofuels Carbon dioxide Bagasse |
| Zdroj: | Bioresource Technology. 224:639-647 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2016.11.101 |
| Popis: | The performance of two lignocellulosic biomasses was studied in high-pressure carbon dioxide/water pre-treatment. Sugarcane bagasse and elephant grass were used to produce C5-sugars from hemicellulose and, simultaneously, to promote cellulose digestibility for enzymatic saccharification. Different pre-treatment conditions, with combined severity factor ranging from -1.17 to -0.04, were evaluated and maximal total xylan to xylose yields of 59.2wt.% (34.4wt.% xylooligomers) and 46.4wt.% (34.9wt.% xylooligomers) were attained for sugarcane bagasse and elephant grass, respectively. Furthermore, pre-treated biomasses were highly digestible, with glucan to glucose yields of 77.2mol% and 72.4mol% for sugarcane bagasse and elephant grass, respectively. High-pressure carbon dioxide/water pre-treatment provides high total C5-sugars and glucose recovery from both lignocellulosic biomasses; however it is highly influenced by composition and intrinsic features of each biomass. The obtained results confirm this approach as an effective and greener alternative to conventional pre-treatment processes. |
| Databáze: | OpenAIRE |
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