Brineworks designs electrochemical technology to extract carbon dioxide (CO₂) and hydrogen (H₂) from seawater. Its work supports carbon removal efforts and the production of low-emission fuels by providing a more cost-efficient way to access CO₂ and H₂ feedstocks.

Brineworks' primary product is a modular seawater electrolysis system that produces:

• Acid and base streams used for carbon extraction and alkalinity enhancement.

• Green hydrogen as a co-product.

• Pure CO₂ that can be used for fuel synthesis or sequestration.

PARTNERSHIPS & PROJECTS

During 2024, Brineworks raised €2 million led by Pale blue dot to advance its seawater electrolysis technology for extracting CO₂ and H₂. The funding supports further development and deployment of its electrolyzer.

Brineworks seems to be operating as a technology provider. The business model could include sales or deployment of electrolysis systems as well as the potential to evolve the business model.

Brineworks uses a proprietary hybrid electrolysis platform that combines elements of traditional water electrolysis and electrodialysis. Key features include:

• Generation of acid and base streams for seawater pH manipulation.

• Simultaneous co-production of H₂, NaOH, and HCl.

• Use of high-efficiency membranes made from non-precious, Earth-abundant materials.

• Expected lower capital and operational costs compared to standard electrodialysis systems.

• Designed for deployment in coastal or offshore environments.

The system enables both Direct Ocean Capture (DOC) and Ocean Alkalinity Enhancement (OAE) approaches.

Brineworks solution could be of interest to different markets and applications such as:

Fuel Production

• Production of e-methanol, e-methane, sustainable aviation fuel (SAF), and e-diesel.

• Decentralized deployment near fuel production sites or ports.

Maritime and Aviation

• Supply of CO₂ and H₂ feedstocks for sectors that are hard to electrify.

Carbon Dioxide Removal

• Chemical extraction of CO₂ from seawater followed by re-equilibration with atmospheric CO₂.

• Enhancement of seawater alkalinity to increase natural CO₂ uptake.

Hydrogen Supply

• Green hydrogen generation as an additional output of the electrolysis process.

Byproduct Utilization

• Potential use of mineral reaction products (e.g., MgCl₂, MgCO₃) in construction materials.