Steam explosion pretreatment of wheat straw to improve methane yields: Investigation of the degradation kinetics of structural compounds during anaerobic digestion
| Autor: | Andreas Gronauer, Javier Lizasoain, Alexander Bauer, Nikolaus Weran, Ramón Enguídanos, Christopher Lefever, Molly K. Saylor, Franz Theuretzbacher |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Environmental Engineering
Bioengineering Methane Rumen chemistry.chemical_compound Biogas Bioenergy Anaerobiosis Biomass Waste Management and Disposal Triticum Steam explosion Renewable Energy Sustainability and the Environment Chemistry Water food and beverages General Medicine Models Theoretical Straw Pulp and paper industry Refuse Disposal Kinetics Steam Anaerobic digestion Biodegradation Environmental Solubility Agronomy Biofuels Degradation (geology) |
| Zdroj: | Bioresource Technology. 179:299-305 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2014.12.008 |
| Popis: | Wheat straw can serve as a low-cost substrate for energy production without competing with food or feed production. This study investigated the effect of steam explosion pretreatment on the biological methane potential and the degradation kinetics of wheat straw during anaerobic digestion. It was observed that the biological methane potential of the non steam exploded, ground wheat straw (276 l(N) kg VS(-1)) did not significantly differ from the best steam explosion treated sample (286 l(N) kg VS(-1)) which was achieved at a pretreatment temperature of 140°C and a retention time of 60 min. Nevertheless degradation speed was improved by the pretreatment. Furthermore it was observed that compounds resulting from chemical reactions during the pretreatment and classified as pseudo-lignin were also degraded during the anaerobic batch experiments. Based on the rumen simulation technique, a model was developed to characterise the degradation process. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect