Journal
BIORESOURCE TECHNOLOGY
Volume 159, Issue -, Pages 104-111Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.02.064
Keywords
Pyrolysis; Activated carbon; Oilseed rape; Macro-algae; Inorganic
Funding
- BBSRC
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The utility of pyrolytic carbons is closely related to their porosity and surface area, there is a clear benefit to the development of biomass pyrolysis processes which produce highly porous carbons. The results presented in this work demonstrate that by using biomass precursors with high inorganic content along with specified process conditions, carbons can be consistently produced with specific surface areas between 900 and 1600 m(2)/g. Results from 12 different source materials show that the formation of increased porosity in pyrolytic carbons is strongly associated with the presence of inorganic elements in the precursors including: magnesium, potassium and sulfur. It was found that pyrolysis of macro-algae can produce especially high specific surface area carbons (mean: 1500 m(2)/g), without externally applied activating agents. Using cheap readily available agricultural residues such as oilseed rape straw, pyrolytic carbons can be produced with specific surface areas of around 950 m(2)/g. (C) 2014 Elsevier Ltd. All rights reserved.
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