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Highly active and magnetically recoverable heterogeneous catalyst for hydrothermal liquefaction of biomass into high quality bio-oil

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journal contribution
posted on 2022-12-21, 16:55 authored by Swathi Mukundan, Jin Xuan, Sandra E. Dann, Jonathan WagnerJonathan Wagner

 This article reports a safe, low-cost, and industrially applicable magnetite supported on activated carbon catalyst that can be magnetically retrieved from the solid and reused multiple times without the need of a regeneration step. The FeOx/C catalyst improved the bio-oil yield by 19.7 ± 0.96 % when compared to the uncatalysed reaction at 320 °C for the HTL of draff (brewer’s spent grains). The use of homogeneous Na2CO3 base as a catalyst and co-catalyst, improved carbon extraction into the aqueous phase. The exceptional catalytic activity can be attributed to the Fe3O4 phase which can produce in-situ H2 that improves the biomass decomposition and oil property with an energy recovery of ∼84 %. The FeOx/C catalyst was separated using magnetic retrieval and maintained its catalytic activity even up to 5 reaction cycles showing potential as a cheap catalyst for HTL reactions and can be scaled-up for industrial applications. 

Funding

UKRI Interdisciplinary Centre for Circular Chemical Economy

UK Research and Innovation

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History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

Bioresource Technology

Volume

369

Publisher

Elsevier Ltd

Version

  • VoR (Version of Record)

Rights holder

© The authors

Publisher statement

This is an open access article published by Elsevier under the Creative Commons Attribution CC BY license (http://creativecommons.org/licenses/by/4.0/).

Acceptance date

2022-12-08

Publication date

2022-12-16

Copyright date

2022

ISSN

0960-8524

Language

  • en

Depositor

Deposited on behalf of Jonathan Wagner. Date: 20 December 2022

Article number

128479

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