Influence of Red Mud Catalyst and Reaction Atmosphere on Hydrothermal Liquefaction of Algae

نویسندگان

چکیده

Algae are a diverse group of aquatic organisms and have potential to produce renewable biofuel via hydrothermal liquefaction (HTL). This study investigated the effects reaction environments on biocrude production from “Tetraselmis sp.” algae strain by HTL process using red mud (RM) based catalyst. The inert (N2), ethylene (C2H4), reducing (10% H2/90% N2), oxidizing O2/90% N2) were applied non-catalytic as well catalytic treatments with two forms RM catalysts: reduced at 500 °C (RRM) nickel-supported (Ni/RM). Under nitrogen, environments, yield increased following trend: No Catalyst < RRM Ni/RM. Ni/RM catalyst produced highest (37 wt.%) in an environment, generated lowest total acid number (14 mg KOH/g) under atmosphere, lowered sulfur (33–66%) oxygen (18–30%) products irrespective environments. maximized carbon content (61 environment minimized heavy metal phosphorus transfer feedstock studied ambiences. facilitated mild hydrotreatment during presence Among experiments, atmosphere optimized (54.3 calorific value (28 MJ/kg) minimum amount (27.2 biocrudes.

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ژورنال

عنوان ژورنال: Energies

سال: 2023

ISSN: ['1996-1073']

DOI: https://doi.org/10.3390/en16010491