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Comparison of Biobutanol Production Pathways via Acetone− Butanol−Ethanol Fermentation Using a Sustainability Exergy-Based Metric

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posted on 2023-07-17, 17:48 authored by Samir Isaac Meramo HurtadoSamir Isaac Meramo Hurtado, Ángel Dario González-Delgado, Lars Rehmann, Edgar Quiñones-Bolaños, Mehrab MehrvarMehrab Mehrvar

Two different commercial photocatalysts, Degussa P25 and Hombikat UV 100, were used to degrade 1,4-dioxane photocatalytically in an annular slurry photoreactor. The optimum photocatalyst loading for Degussa P25 was found to be 1.5 g L-1 while for Hombikat UV 100 was between 3.0-4.0 g L-1. The photoactivity of Degussa P25 is higher than that of Hombikat at lower photocatalyst loadings whereas it is lower at higher photocatalyst loadings. This was found both experimentally and also by mathematical modeling of the radiation within the photoreactor zone. The photoactivity of UV 100 titanium dioxide was found to be twice that of Degussa P25 at optimum loadings. 

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