Cherad, R, Onwudili, JA, Ekpo, U et al. (4 more authors) (2013) Macroalgae supercritical water gasification combined with nutrient recycling for microalgae cultivation. Environmental Progress and Sustainable Energy, 32 (4). 902 - 909. ISSN 1944-7442
Abstract
The composition of syngas and process water from the supercritical water gasification of macroalgae has been investigated. The potential for using the process water as a source of nutrients for microalgae cultivation was assessed. Saccharina latissima, harvested across the four seasons was gasified in a batch reactor at 500°C and 36 MPa to assess the influence of biochemical content and ash on syngas composition. In addition, summer harvests of four different macroalga were gasified with ruthenium catalyst (Ru/Al2O3). The molar yields of hydrogen and C1-C4 gases from S. latissima increased by 30% in the presence of Ru/Al2O3 with a maximum gasification efficiency of 92% compared with work without these catalysts. Following a series of dilutions, the process water from catalyzed gasification of S. latissima was used in cultivation trials of Chlorella vulgaris and compared to standard growth media. The results indicate the potential to recover process waters from gasification of macroalgae in nutrient management for microalgae.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | seaweeds; macroalgae; hydrothermal gasification; algal bio-refinery; nutrient recycling |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Energy Research Institute (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Inst for Pathogen Control Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 23 Apr 2014 10:24 |
Last Modified: | 03 May 2015 09:00 |
Published Version: | http://dx.doi.org/10.1002/ep.11814 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/ep.11814 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:78467 |