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Bioresour Technol. 2014 Mar;156:291-6. doi: 10.1016/j.biortech.2014.01.057. Epub 2014 Jan 24.

Fast microwave-assisted catalytic gasification of biomass for syngas production and tar removal.

Author information

  • 1Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, United States.
  • 2Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, United States; GIMSCOP and Department of Chemical Engineering, Federal University of Rio Grande do Sul, Rua Engenheiro Luiz Englert, Prédio 12204, 90040-040 Porto Alegre-RS, Brazil.
  • 3Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, United States. Electronic address: ruanx001@umn.edu.

Abstract

In the present study, a microwave-assisted biomass gasification system was developed for syngas production. Three catalysts including Fe, Co and Ni with Al2O3 support were examined and compared for their effects on syngas production and tar removal. Experimental results showed that microwave is an effective heating method for biomass gasification. Ni/Al2O3 was found to be the most effective catalyst for syngas production and tar removal. The gas yield reached above 80% and the composition of tar was the simplest when Ni/Al2O3 catalyst was used. The optimal ratio of catalyst to biomass was determined to be 1:5-1:3. The addition of steam was found to be able to improve the gas production and syngas quality. Results of XRD analyses demonstrated that Ni/Al2O3 catalyst has good stability during gasification process. Finally, a new concept of microwave-assisted dual fluidized bed gasifier was put forward for the first time in this study.

Copyright © 2014 Elsevier Ltd. All rights reserved.

KEYWORDS:

Dual fluidized bed gasifier (DFBG); Gasification; Microwave; Nickel based catalyst; Tar

PMID:
24508907
[PubMed - indexed for MEDLINE]
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