Travertine Technologies

travertinetech.com ↗

Electrochemical process that produces carbon-negative, gypsum-free purified phosphoric acid and calcium carbonate while capturing CO2 from the air, used for critical element extraction (lithium, nickel, phosphorus) in mining and fertilizer industries

Carbon RemovalGrowth (Series A)Boulder, COFounded 2022

The interesting angle

Founded 2022 by Dr. Laura Lammers, spun out of her environmental geochemistry lab at UC Berkeley; opened first demonstration plant in upstate New York (Oct 2025) funded partly by NYSERDA; investors include Holcim MAQER Ventures, The Grantham Foundation, Clean Energy Ventures, and DARPA; 21,000 sq ft engineering/RD&D facility in Boulder

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Last updated August 2026Sources: [1][2][3]

Snapshot

Funding: $11.5M-$13.5M total; $8.5M Series A led by Holcim (Jun 2024)
Stage: Growth (Series A)
HQ: Boulder, CO
Founded: 2022
Target customer: Mining, fertilizer, and battery material producers

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