Published: March 17, 2026
Summary: A bioprocessing system that enables highly efficient microbial fermentation of formate with complete carbon utilization and zero detectable CO₂ emissions under demonstrated conditions. The technology integrates precise substrate feeding and synchronized gas delivery strategy to maximize carbon efficiency, reduce waste, and enable sustainable biomanufacturing.
Applications:
- Carbon-neutral bioproducts manufacturing
- Sustainable aviation fuel production
- Bioplastics and chemicals from CO2
- Renewable protein production
- Industrial biotechnology and gas fermentation platforms
Advantages/Benefits:
- Complete carbon conversion, no gas waste
- Maximized substrate utilization
- Eliminates formate toxicity
- Enables carbon-neutral biomanufacturing
- Drop-in upgrade to standard bioreactors
Background: Current bioprocesses often suffer from significant carbon loss as CO₂, incomplete gas utilization, and substrate toxicity. These limitations hinder overall carbon conversion efficiency and lead to wasted resources and emissions, limiting the commercial potential of sustainable fermentation technologies.
Technology Overview:
Scientists at Berkeley Lab have developed a bioprocessing system for formate-based microbial fermentation that achieves complete carbon conversion. It features pH-stat controlled formate feeding, adding formate only as consumed to prevent toxic accumulation. Supplemental hydrogen delivery provides reducing power, enabling microorganisms to re-assimilate carbon dioxide. Furthermore, a pressurized, pulsed gas-feeding regime operates the bioreactor at elevated pressure, intermittently supplying hydrogen and oxygen, synchronizing gas supply with microbial uptake.
This technology is differentiated by its ability to achieve complete carbon conversion efficiency, eliminating the significant carbon loss seen in traditional systems. It ensures zero detectable CO2 emissions and near-complete hydrogen utilization by dynamically synchronizing gas supply with microbial metabolism. The system also eliminates formate toxicity and serves as a drop-in upgrade for existing bioreactors, enabling truly carbon-neutral biomanufacturing.
Development Stage: Validated in lab environment (TRL 4)
Inventors:
Status: Patent pending
Opportunities: Available for licensing and / or collaborative research
