FlueVault Seawater-Mineral CCS

FlueVault is a Singapore-based carbon capture and storage company that pairs CO2 storage with critical metal supply. Its two founders, Philip Jones (energy infrastructure and trading, including over 20 years at TotalEnergies) and Nathan Walworth (marine carbon sequestration R&D, author of an olivine reactor patent), are named on the company website. The site does not state a founding year.

The system uses seawater-mineral reactors that react industrial CO2 with olivine at atmospheric pressure and temperature, storing the carbon as bicarbonate and recovering metals. Units are modular, containerised or barge-mounted, scale from 300,000 to 500,000 tonnes of CO2 per year, and accept low-purity CO2 at the emission point without liquefaction or long-distance transport.

• Seawater-mineral reactor: CO2 is converted into stable bicarbonate with olivine in seawater.
• Modular scale: Units serve small and mid-sized emitters from 300,000 to 500,000 tonnes per year.
• Mobile deployment: Containerised and barge-mounted configurations are offered.
• Low energy: The reaction runs at atmospheric pressure and temperature.
• Point-source capture: No liquefaction or long-distance CO2 transport is needed.
• Critical metal recovery: Critical metals are recovered alongside storage.

Coastal cement, steel or chemical plants in Vietnam could pilot point-source capture on low-purity flue gas. Industrial parks near the sea could share a barge-mounted unit. Mining and metals firms could evaluate the combined CO2 storage and metal recovery.

The company claims CCS costs can be cut by up to 50% compared with conventional approaches. Low-purity CO2 is accepted, avoiding costly purification. Operating at atmospheric pressure and temperature keeps energy demand low. Capturing at the point source removes the need to liquefy and transport CO2. Metal recovery adds a second output stream.

Singapore and the wider region are looking at carbon capture for hard-to-abate industry, while Vietnam and other ASEAN members are building carbon market frameworks that raise interest in emissions reduction technologies. Smaller emitters near the coast need options that avoid pipeline and compression infrastructure.

Singapore. Founders Philip Jones and Nathan Walworth listed on the website. Finalist at The Liveability Challenge 2026 (eight finalists announced 1 April 2026). Early-stage; no funding disclosed on the website.