Journal
BIORESOURCE TECHNOLOGY
Volume 245, Issue -, Pages 860-868Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.09.022
Keywords
Co-pyrolysis; Lignocellulosic biomass; Microalgae; Products characteristics; Interaction effect; Nitrogen transformation
Funding
- National Nature Science Foundation of China [51406061, 51622604]
- National Basic Research Program of China (973 Program) [2013CB228102]
- Agro-scientific Research in the Public Interest [201303095]
- Fundamental Research Funds for the Central Universities
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Co-pyrolysis of biomass has a potential to change the quality of pyrolytic bio-oil. In this work, co-pyrolysis of bamboo, a typical lignocellulosic biomass, and Nannochloropsis sp. (NS), a microalgae, was carried out in a fixed bed reactor at a range of mixing ratio of NS and bamboo, to find out whether the quality of pyrolytic bio-oil was improved. A significant improvement on bio-oil after co-pyrolysis of bamboo and NS was observed that bio-oil yield increased up to 66.63 wt% (at 1:1) and the content of long-chain fatty acids in bio-oil also dramatically increased (the maximum up to 50.92% (13.57 wt%) at 1:1) whereas acetic acid, O-containing species, and N-containing compounds decreased greatly. Nitrogen transformation mechanism during co-pyrolysis also was explored. Results showed that nitrogen in microalgae preferred to transform into solid char and gas phase during co-pyrolysis, while more pyrrolic-N and quaternary-N generated with diminishing protein-N and pyridinic-N in char.
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