Arthur Vienne
@arthurvienne.bsky.social
Main interests:
Decarbonisation, CDR, fermentation, athletics, cycling and sustainable food solutions.
Doing a PhD on geochemical CDR.
Decarbonisation, CDR, fermentation, athletics, cycling and sustainable food solutions.
Doing a PhD on geochemical CDR.
Reposted by Arthur Vienne
1) No taxonomic shifts could be detected when alkalinity additions (500 umol/kg, i.e. substantial!) are matched with immediate CO2 influx (i.e. pH excursions are minimal). Thus, the extra CO2 stored as bicarbonate in seawater did not negatively or positively affect the community.
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July 1, 2025 at 4:09 AM
1) No taxonomic shifts could be detected when alkalinity additions (500 umol/kg, i.e. substantial!) are matched with immediate CO2 influx (i.e. pH excursions are minimal). Thus, the extra CO2 stored as bicarbonate in seawater did not negatively or positively affect the community.
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(2/2) as olivine reactivity seems to be limited at weathering rates around -10 mol TA/m2/s in saturated CO2 solutions, or even 2 orders of magnitude Lower at ambient CO2, upgrading olivine to more reactive minerals may be required to achieve rapid CDR.
February 24, 2025 at 12:48 PM
(2/2) as olivine reactivity seems to be limited at weathering rates around -10 mol TA/m2/s in saturated CO2 solutions, or even 2 orders of magnitude Lower at ambient CO2, upgrading olivine to more reactive minerals may be required to achieve rapid CDR.