Capture6 Brine Water Recovery & Carbon Removal

Capture6 is a public benefit corporation with offices in the San Francisco Bay Area (USA) and New Zealand. It uses an integrated system to turn saltwater and waste brine into fresh water while removing atmospheric CO2, and works with industries, governments and communities.

The system treats waste brine from industrial facilities to recover fresh water and the salt (NaCl) contained in it. The salt is chemically converted into a carbon capture solvent that binds CO2 from the air, giving verifiable removals. The site lists projects including Project Monarch in the USA and Project Tortuga, a test deployment in Perth, Western Australia.

• Brine water recovery: recovers fresh water from industrial waste brine.
• Salt valorization: recovers NaCl so it can be sold as a resource.
• Carbon capture solvent: converts NaCl into a solvent that binds atmospheric CO2.
• Modular system: integrated water and carbon removal design.
• Brine pond alternative: replaces brine ponds for disposal.

Desalination and industrial plants in Vietnam seeking alternatives to brine ponds. Coastal areas with salinity intrusion needing additional fresh water. Companies buying durable carbon removal tied to water projects.

Recovers fresh water from brine, which the site says lowers baseline costs. Offers an alternative to brine ponds for disposal. Recovers salt as a saleable resource. Produces permanent, verifiable CO2 removal from the same chemistry.

Water scarcity and brine disposal costs push industrial facilities toward water recovery. Durable carbon removal credits attract corporate buyers. Coastal Vietnamese provinces facing salinity intrusion and industrial users of desalination may follow similar needs.

Offices in the San Francisco Bay Area and New Zealand. Site news: financing from RSF and iBank for Monarch Phase 2 (May 2026); named to the TIME top GreenTech list 2026; Project Tortuga launched in Western Australia (October 2026).