Work

Exploring microalgae species for integrated bioenergy Production: A Multi-Fuel cascade valorisation approach

Year: 2025

Type: article

Abstract: The present study aims to evaluate the cascade valorisation of microalgae for bioenergy production after defining the most promising species between Aurantiochytrium sp., Scenedesmus obliquus , Nannochloropsis oceanica , and Nannochloropsis sp.. For selection, biodiesel (after hexane lipid extraction coupled with cell-disruption methods) and bioethanol (after acid hydrolysis) were produced from raw biomass. Aurantiochytrium sp. achieved the highest oil and FAME contents (21 ± 1 wt% and 58.9 ± 0.6 wt%, respectively), as well as the highest bioethanol concentration (5.4 ± 0.3 g/L). The integrated production of biodiesel, bioethanol and biogas led to a decrease in bioethanol and biogas production efficiency compared to raw biomass (around 30 % and 60 %, respectively). However, it allows multiple product outputs, potentially improving economic and environmental outcomes. The current study highlights the potential of using microalgae species such as Aurantiochytrium sp. for bioenergy production, in a zero-waste approach.

Source: Energy Conversion and Management

DOI: 10.1016/j.enconman.2025.119736

Authors: Joana Oliveira, Sara Pardilhó, Emanuel Costa, José C. Pires, Joana Maia Dias

Institution: Universidade do Porto

Language: English

Topic: Algal biology and biofuel production

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDGs: Affordable and clean energy, Responsible consumption and production, Climate action

Open Access status: hybrid

Estimated APC paid: $4,600