Electrochemical Synthesis of Low-Carbon Cement

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Program:
Special Projects
Award:
$498,254
Location:
Weston,
Massachusetts
Status:
ACTIVE
Project Term:
07/19/2021 - 01/18/2023

Project Innovation + Advantages:

Cement is responsible for 8% of global CO2 emissions. Currently, the only economical way to make Portland cement’s key ingredient, lime, is by thermally decomposing limestone. This reaction contributes ~75% of cement’s emissions. Sublime Systems (Sublime) will build an electrochemical system to produce lime using off-peak renewable electricity and calcium sources that do not release CO2. The lime produced may possess exceptional purity, consistency, and reactivity, enabling next-generation low-carbon cements. If successful and scaled, Sublime’s electrochemical synthesis of lime would reduce energy-related emissions in the U.S. from lime and cement making while simultaneously providing ancillary grid services, enabling proliferation of renewables.

Contact

ARPA-E Program Director:
Dr. Douglas Wicks
Project Contact:
Dr. Jesse Benck
Press and General Inquiries Email:
ARPA-E-Comms@hq.doe.gov
Project Contact Email:
jesse@sublime-systems.com

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