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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 Capture/DAC
Funding
$11.5M-$13.5M total; $8.5M Series A led by Holcim (Jun 2024); plus $7.5M Builders Vision + $3.2M NYSERDA for its NY demo plant
Stage
Growth (Series A)
HQ
Boulder, CO
Founded
2022

The Current 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

Leadership

HQ location

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Last updated September 2026Sources: [1][2][3][4]