Coupled Biohydrogen Production and Bio-Nanocatalysis for Dual Energy from Cellulose: Towards Cellulosic Waste Up-Conversion into Biofuels Gómez Bolívar, Jaime Merroun, Mohamed Larbi Biohydrogen Cellulose Hot compressed water hydrolysis 5-hydroxymethyl furfural up-valorisation 2,5-dimethyl furan Liquid fuel Hydrogen, an emergent alternative energy vector to fossil fuels, can be produced sustainably by fermentation of cellulose following hydrolysis. Fermentation feedstock was produced hydrolytically using hot compressed water. The addition of CO2 enhanced hydrolysis by ~26% between 240 and 260 C with comparable hydrolysis products as obtained under N2 but at a 10 C lower temperature. Co-production of inhibitory 5-hydromethyl furfural was mitigated via activated carbon sorption, facilitating fermentative biohydrogen production from the hydrolysate by Escherichia coli. Post-fermentation E. coli cells were recycled to biomanufacture supported Pd/Ru nanocatalyst to up-convert liquid-extracted 5-HMF to 2,5-dimethyl furan, a precursor of ‘drop in’ liquid fuel, in a one-pot reaction. This side stream up-valorisation mitigates against the high ‘parasitic’ energy demand of cellulose bioenergy, potentially increasing process viability via the coupled generation of two biofuels. This is discussed with respect to example data obtained via a hydrogen biotechnology with catalytic side stream up-conversion from cellulose feedstock. 2022-07-13T08:18:45Z 2022-07-13T08:18:45Z 2022-05-24 journal article Gomez-Bolivar, J... [et al.]. Coupled Biohydrogen Production and Bio-Nanocatalysis for Dual Energy from Cellulose: Towards CellulosicWaste Up-Conversion into Biofuels. Catalysts 2022, 12, 577. [https://doi.org/10.3390/catal12060577] http://hdl.handle.net/10481/75976 10.3390/catal12060577 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional MDPI