Investigation on biomass nitrogen-enriched pyrolysis: Influence of temperature
Autor: | Kaixu Li, Haiping Yang, Yingquan Chen, Wei Chen, Xu Chen, Hanping Chen |
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Rok vydání: | 2018 |
Předmět: |
Hot Temperature
Environmental Engineering Nitrogen 020209 energy Inorganic chemistry Biomass chemistry.chemical_element Bioengineering 02 engineering and technology 010501 environmental sciences 01 natural sciences Acetic acid chemistry.chemical_compound Biochar 0202 electrical engineering electronic engineering information engineering Plant Oils Waste Management and Disposal 0105 earth and related environmental sciences Renewable Energy Sustainability and the Environment Temperature Polyphenols General Medicine chemistry Biofuel Biofuels Environmental chemistry Heat of combustion Composition (visual arts) Pyrolysis |
Zdroj: | Bioresource Technology. 249:247-253 |
ISSN: | 0960-8524 |
Popis: | Biomass (bamboo waste) nitrogen-enriched pyrolysis was carried out in a fixed bed with NH3 atmosphere at 400-800 °C, and formation mechanism of N-containing species was explored in depth. Results showed that N-enriched pyrolysis greatly increased bio-oil and gas yields. H2 yield increased sharply to 130 mL/g (32.93 vol%) and became the main composition at higher temperature, while CH4 and CO yields deceased, and the lower heating value of gas reached ∼14 MJ/Nm3. For bio-oil, the content of phenols (main compositions) and N-containing species increased significantly, and the maximums reached 61.33% and 11.47%, respectively. While that of acetic acid (disappeared), O-containing species (aldehydes/ketones/furans/esters) and aromatics decreased largely accordingly. For biochar, Nitrogen content increased, and it contained abundant pyridininc-N, pyrrolic-N, quaternary-N, and pyridone-N-oxide. Possible reaction pathways of biomass N-enriched pyrolysis was proposed based on products evolution. In conclusion, biomass N-enriched pyrolysis could obtain high-valued N-containing chemical species and functional biochar. |
Databáze: | OpenAIRE |
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