Journal
BIORESOURCE TECHNOLOGY
Volume 166, Issue -, Pages 518-526Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.05.100
Keywords
Fast pyrolysis; Microwave; Microalgae; Bio-oil; Model compounds
Funding
- CNPq
- CAPES
- DOT/Sun Grant
- USDA/DOE
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Fast microwave-assisted pyrolysis (fMAP) in the presence of a microwave absorbent (SiC) and catalyst (HZSM-5) was tested on a Chlorella sp. strain and on a Nannochloropsis strain. The liquid products were characterized, and the effects of temperature and catalyst: biomass ratio were analyzed. For Chlorella sp., a temperature of 550 degrees C, with no catalyst were the optimal conditions, resulting in a maximum bio-oil yield of 57 wt.%. For Nannochloropsis, a temperature of 500 degrees C, with 0.5 of catalyst ratio were shown to be the optimal condition, resulting in a maximum bio-oil yield of 59 wt.%. These results show that the use of microwave absorbents in fMAP increased bio-oil yields and quality, and it is a promising technology to improve the commercial application and economic outlook of microwave pyrolysis technology. Additionally, the use of a different catalyst needs to be considered to improve the bio-oil characteristics. (C) 2014 Elsevier Ltd. All rights reserved.
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