Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

The Application of Catalytic Processes on the Production of Algae-based Biofuels: A Review

Version 1 : Received: 21 August 2020 / Approved: 21 August 2020 / Online: 21 August 2020 (04:24:54 CEST)

How to cite: Zuorro, A.; García-Martínez, J.B.; Barajas-Solano, A.F. The Application of Catalytic Processes on the Production of Algae-based Biofuels: A Review. Preprints 2020, 2020080469 (doi: 10.20944/preprints202008.0469.v1). Zuorro, A.; García-Martínez, J.B.; Barajas-Solano, A.F. The Application of Catalytic Processes on the Production of Algae-based Biofuels: A Review. Preprints 2020, 2020080469 (doi: 10.20944/preprints202008.0469.v1).

Abstract

Over the last decades, microalgal biomass has gained a significant role in the development of different high-end (nutraceuticals, colorants, food supplements, and pharmaceuticals) and low-end products (biodiesel, bioethanol, and biogas) due to rapid growth and high carbon fixing efficiency. Therefore, microalgae are considered a useful and sustainable resource to attain energy security while reducing our current reliance on fossil fuels. From the technologies available for obtaining biofuels using microalgae biomass, thermochemical processes (pyrolysis, HTL, gasification) have proven to be processed with higher viability, because they use all biomass. However, the biocrudes obtained from direct thermochemical conversion have substantial quantities of heteroatoms (oxygen, nitrogen, and sulfur) due to the complexity of the biomass's content of chemical components (lipids, carbohydrates, and proteins). As a solution, catalyst-based processes have emerged as a sustainable solution for the increase in biocrude production. This paper's objective is to present a comprehensive review of recent developments on catalyst mediated conversion of algal biomass. Special attention will be given to operating conditions, strains evaluated, and challenges for the optimal yield of algal-based biofuels through pyrolysis and HTL.

Subject Areas

microalgae; thermochemical processing; biofuel and bioenergy; torrefaction; liquefaction; pyrolysis; gasification

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