Ultra high-density photobioreactor for saltwater-adapted hydrocarbon algae

Overview

Advanced photobioreactor technology for ultra high-density growth of hydrocarbon-producing algae adapted to saltwater environments. The system is designed to deliver a tenfold increase in biomass and hydrocarbon productivity compared to traditional pond cultures, using ambient carbon dioxide and nitrogen-based pH control to improve sustainability and resource efficiency. The approach is positioned as a promising alternative for biofuel production.

Technical specifications

The system uses a thin film trickle photobioreactor optimized for high algae concentrations and minimal water handling. Design elements include thin film orientation, liquid distribution systems, screen materials, and controlled flow rates. The algae species Botryococcus braunii is used, with reported 30% improvement in light efficiency attributed to its hydrocarbon production process, which reduces energy losses from photorespiration. The reactor design supports metabolic pH control through nitrogen metabolism stoichiometry, enabling effective use of waste nitrogen sources such as cow manure or nutrient-rich waste streams.

Technology readiness level

The solution is at Technology Readiness Level 6. It has been validated in constrained outdoor tests and is ready for further implementation through refinement at a family farm in Central PA. This work is intended to further assess productivity, hydrocarbon recovery, and economic viability.