[Hatem]

I see opportunity in CO2 from AD :

Capturing CO₂ from biogas and using it to grow algae.

This offers a powerful, climate-friendly synergy: algae thrive on CO₂, and biogas upgrading produces a steady stream of biogenic CO₂ that would otherwise be wasted. This creates a circular system where CO₂ and nutrient-rich digestate from anaerobic digestion fuel algae growth, which can in turn produce high-value products like biofuels, bioplastics, or animal feed. Despite the scientific potential, practical barriers such as gas purification needs, mismatched CO₂ supply and light availability, land and water requirements, and immature markets have slowed adoption. However, with advances in algal biotechnology, modular reactor systems, and stronger policy support for CO₂ reuse and nutrient recycling, integrating algae cultivation with RNG plants could become a game-changer for both carbon capture and the bioeconomy.