Lawrence Livermore scientists
have discovered and demonstrated a new technique to remove and store
atmospheric carbon dioxide while generating carbon-negative hydrogen and
producing alkalinity, which can be used to offset ocean acidification.
The team demonstrated, at a laboratory scale, a system that uses the acidity normally produced in saline water electrolysis to accelerate silicate mineral dissolution while producing hydrogen fuel and other gases. The resulting electrolyte solution was shown to be significantly elevated in hydroxide concentration that in turn proved strongly absorptive and retentive of atmospheric CO2.
The team demonstrated, at a laboratory scale, a system that uses the acidity normally produced in saline water electrolysis to accelerate silicate mineral dissolution while producing hydrogen fuel and other gases. The resulting electrolyte solution was shown to be significantly elevated in hydroxide concentration that in turn proved strongly absorptive and retentive of atmospheric CO2.
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| The Great Barrier Reef in Australia already has been affected by ocean warming and acidification. (Credit: Image courtesy of DOE/Lawrence Livermore National Laboratory) |
Credit: https://www.llnl.gov