Brown, A, Finnerty, G, Camargo-Valero, MA orcid.org/0000-0003-2962-1698 et al. (1 more author) (2020) Valorisation of macroalgae via the integration of hydrothermal carbonisation and anaerobic digestion. Bioresource Technology, 312. 123539. ISSN 0960-8524
Abstract
This study investigates the integration of hydrothermal carbonisation (HTC) with anaerobic digestion (AD) as a valorisation route for two macroalgae species; S. latissima (SL) and F. serratus (FS). HTC reactions were conducted at temperatures of 150°C, 200°C and 250°C, with resulting hydrochars, process waters and hydrothermal slurries assessed for biomethane potential yields. Un-treated SL generated similar biomethane levels compared to all SL slurries. Whereas all FS slurries improved biomethane yields compared to un-treated FS. Hydrochars represent a greater energy carrier if used as a solid fuel, rather than a feedstock for anaerobic digestion. Integrating HTC and AD, through hydrochar combustion and process water digestion has a greater energetic output than anaerobic digestion of the un-treated macroalgae. Treatment at 150°C, with separate utilisation of products, can improve the energetic output of S. latissima and F. serratus by 47 % and 172 % respectively, compared to digestion of the un-treated macroalgae.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Copyright © 2020, Elsevier.his is an open access article distributed under the terms of the Creative Commons CC-BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Keywords: | macroalgae; anaerobic digestion; hydrothermal carbonisation; hydrochar; process waters |
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) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 27 May 2020 14:08 |
Last Modified: | 27 May 2020 14:08 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.biortech.2020.123539 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:160938 |