期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 17, 页码 8295-8303出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.06.041
关键词
Hydrothermal liquefaction; Algae; Spirulina; Swine manure; Digested sludge
资金
- United States Environmental Protection Agency (EPA)
- Department of Civil and Environmental Engineering at the University of Illinois
- National Science Foundation Division of Chemical, Bioengineering, Environmental, and Transport Systems [CBET-0746453]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [0746453] Funding Source: National Science Foundation
This study explores the influence of wastewater feedstock composition on hydrothermal liquefaction (HTL) biocrude oil properties and physico-chemical characteristics. Spirulina algae, swine manure, and digested sludge were converted under HTL conditions (300 degrees C. 10-12 MPa, and 30 min reaction time). Biocrude yields ranged from 9.4% (digested sludge) to 32.6% (Spirulina). Although similar higher heating values (32.0-34.7 MJ/kg) were estimated for all product oils, more detailed characterization revealed significant differences in biocrude chemistry. Feedstock composition influenced the individual compounds identified as well as the biocrude functional group chemistry. Molecular weights tracked with obdurate carbohydrate content and followed the order of Spirulina < swine manure < digested sludge. A similar trend was observed in boiling point distributions and the long branched aliphatic contents. These findings show the importance of HTL feedstock composition and highlight the need for better understanding of biocrude chemistries when considering bio-oil uses and upgrading requirements. (C) 2011 Elsevier Ltd. All rights reserved.
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