AA2C Project

Within the framework of our 2030 strategy 'Positive Motion', we have developed the AA2C project (Algae-Olive Mill Wastewater to Biocrude), a pioneering initiative that aims to convert agro-industrial waste such as pomace and olive mill wastewater, as well as other residual biomasses of Spanish origin and microalgae into biofuels using Hydrothermal Liquefaction (HTL) and biorefining technologies.

The project, submitted to the Center for Industrial Technological Development (CDTI) under the IDI-20230312 file, aims to achieve a level of technological maturity TRL 6, demonstrating the industrial viability of this non-food waste recovery route.

Innovation for sustainable energy

AA2C proposes an integral solution for the production of biojet, biodiesel, and marine biofuel, utilizing low-cost raw materials. The conducted tests have demonstrated energy yields exceeding 70% through the co-liquefaction of biomass and crude glycerin, positioning them as promising alternatives to olive mill wastewater.

In addition, the project includes the reuse of by-products, such as in the water phase of the HTL for the cultivation of microalgae, closing the use cycle and promoting the circular economy.

Collaboration and technological development

During its 29 months of implementation (November 2022 - March 2025), AA2C has seen the participation of technology centers such as the Canary Islands Institute of Technology (ITC), the National Renewable Energy Center (CENER), and the Chemical Technology Institute (ITQ), and has conducted more than 30 experimental tests under real conditions for the scaling of processes. Biocrude refining through catalytic cracking and hydrogenation has allowed for the validation of its compatibility with existing industrial processes, producing drop-in biofuels and green molecules with a reduced carbon footprint, and with a quality and properties similar to traditional fossil hydrocarbons.