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US 2024/0149240 A1Published application
Sulfuric acid production with mineral carbon sequestration
AssigneeThe Regents of the University of California
InventorLaura Nielsen Lammers
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Abstract
A geomimetic process of sulfate replacement by mineralized carbonate, either in situ or ex situ, is used for mineral carbon sequestration and critical element recovery.
Claims20
A system that couples sulfuric acid production to mineral carbon sequestration, the system comprising:
- an electrolyzer stack of one or more electrochemical cells comprising:
- an anode within an anode chamber containing an anolyte,
- a cathode within a cathode chamber containing a catholyte, and
- an anion exchange membrane separating the anode and cathode chambers;
- a mineralized carbonate production reactor configured to receive a hydroxide solution from the cathode chamber, to generate mineralized carbonate from a sulfate feedstock and CO2, and to return some or all of the reactor solution to the cathode chamber;
- and
- a sulfuric acid recovery module configured to receive sulfuric acid from the anode chamber.
4 more elements
Dependencies are inferred from the claim text.