Abstract
Renewable hydrocarbons refer to fuels consisting of hydrocarbons of 10 to 20 carbon atoms, produced from biomass, and free of oxygen. Hydrocracking, hydrodeoxygenation and hydrotreatment processes for the production of renewable hydrocarbons are described in the literature. Microalgae have been targeted in recent years to synthesize biomass that can be used in the production of biofuels, such as renewable hydrocarbons, biodiesel or ethanol second generation. In this context the lineage Monoraphidium sp. was selected from previous ecophysiological studies and its potential to produce lipids to develop this research related with the extraction of the bio-oil of the wet biomass of Monoraphidium sp. through heat treatment. Consecutively the bio-oil was used as raw material for the production of hydrocarbons through hydrocracking and hydrodeoxygenation processes (HDO) as: decarbonylation, decarboxylation, dehydratation, with in situ production of hydrogen from liquid-phase reforming of glycerol. The reactions were carried out under two different temperature conditions, 350°C and 300°C, respectively, for 1 h and using ruthenium alumina catalyst (Ru/Al2O3). The results showed the bio-oil processing route at a temperature of 350°C promising for the production of hydrocarbons achieving a conversion of 81.54%.
Highlights
The Green Technologies Laboratory (GreenTec) has been working for the past five years on the development of closed microalgae culture systems and biodiesel production technologies using thermochemical routes for the processing of this raw material [1]
In this context the lineage Monoraphidium sp. was selected from previous ecophysiological studies and its potential to produce lipids to develop this research related with the extraction of the bio-oil of the wet biomass of Monoraphidium sp. through heat treatment
The bio-oil was used as raw material for the production of hydrocarbons through hydrocracking and hydrodeoxygenation processes (HDO) as: decarbonylation, decarboxylation, dehydratation, with in situ production of hydrogen from liquid-phase reforming of glycerol
Summary
The Green Technologies Laboratory (GreenTec) has been working for the past five years on the development of closed microalgae culture systems and biodiesel production technologies using thermochemical routes for the processing of this raw material [1]. The results obtained together with the aim of contributing to the consolidation of the production of a multiplicity of bioproducts from microalgae have motivated the interest of continuing to deepen in the development of technologies for the production of renewable hydrocarbons. One of the important requirements for renewable fuels are preferably drop-in, that is, similar biofuels from a chemical point of view to fossil fuels, that can be mixed directly to petrochemical analogues, being able to use the same infrastructure and not requiring adaptations in the engines. In this description, renewable diesel and aviation biokerosene (BioQAv) are included
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