Paradigm shift in algal biomass refinery and its challenges

Area of Science:

• Biotechnology
• Renewable Energy
• Environmental Science

Background:

• Microalgae research spans over 70 years, primarily targeting biodiesel production.
• Biodiesel faces challenges due to low competitiveness and global shifts away from internal combustion engines.
• Growing concerns about global warming and CO2 emissions necessitate innovative solutions.

Purpose of the Study:

• To explore new avenues for the microalgal industry beyond traditional biodiesel.
• To investigate sustainable microalgae cultivation for CO2 sequestration.
• To identify integrated processes for multi-product generation from microalgae.

Main Methods:

• Investigated 'drop-in' fuels as a viable alternative product, particularly for aviation and maritime sectors.
• Explored stable and feasible outdoor cultivation techniques for enhanced CO2 sequestration.
• Discussed the necessity of integrated refinery processes for simultaneous multi-product output.

Main Results:

• Identified 'drop-in' fuels as a promising new product for specific industries.
• Demonstrated potential for stable outdoor cultivation systems focused on CO2 capture.
• Highlighted the importance of integrated biorefineries for economic viability.

Conclusions:

• The microalgal industry holds significant potential for future bio-based economies.
• Shifting focus to alternative products like drop-in fuels and CO2 sequestration is crucial.
• Integrated multi-product strategies are key to overcoming current limitations and maximizing microalgal benefits.