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
Ocean Alkalinity Enhancement (OAE) is a marine CO2 removal method that uses alkaline material to increase the storage capacity for anthropogenic CO2 in seawater.
Kiyas investigated how hydroxide (NaOH) induces taxonomic shifts in plankton. She found: 👇 🌊
onlinelibrary.wiley.com/doi/10.1111/...
Kiyas investigated how hydroxide (NaOH) induces taxonomic shifts in plankton. She found: 👇 🌊
onlinelibrary.wiley.com/doi/10.1111/...
Winners and losers under hydroxide‐based ocean alkalinity enhancement in a Tasmanian plankton community
Ocean alkalinity enhancement (OAE) is an emerging carbon dioxide CO2 removal approach for climate change mitigation and can be implemented with various alkaline materials that convert dissolved CO2 i...
onlinelibrary.wiley.com
July 1, 2025 at 4:09 AM
Ocean Alkalinity Enhancement (OAE) is a marine CO2 removal method that uses alkaline material to increase the storage capacity for anthropogenic CO2 in seawater.
Kiyas investigated how hydroxide (NaOH) induces taxonomic shifts in plankton. She found: 👇 🌊
onlinelibrary.wiley.com/doi/10.1111/...
Kiyas investigated how hydroxide (NaOH) induces taxonomic shifts in plankton. She found: 👇 🌊
onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Arthur Vienne
📢Just out
@globalchangebio.bsky.social: Soil organic carbon (SOC) is key for #enhancedweathering. We found negligible inorganic CO₂ removal, but considerable SOC storage potential. @boitolucilla.bsky.social @arthurvienne.bsky.social @patrickfrings.bsky.social
onlinelibrary.wiley.com/doi/10.1111/...
@globalchangebio.bsky.social: Soil organic carbon (SOC) is key for #enhancedweathering. We found negligible inorganic CO₂ removal, but considerable SOC storage potential. @boitolucilla.bsky.social @arthurvienne.bsky.social @patrickfrings.bsky.social
onlinelibrary.wiley.com/doi/10.1111/...
Beyond Inorganic C: Soil Organic C as a Key Pathway for Carbon Sequestration in Enhanced Weathering
Enhanced weathering involves spreading crushed silicates on soils. Upon weathering of the applied silicates, CO2 is captured via two pathways: pedogenic carbonate formation and leaching of bicarbonat....
onlinelibrary.wiley.com
July 23, 2025 at 8:27 AM
📢Just out
@globalchangebio.bsky.social: Soil organic carbon (SOC) is key for #enhancedweathering. We found negligible inorganic CO₂ removal, but considerable SOC storage potential. @boitolucilla.bsky.social @arthurvienne.bsky.social @patrickfrings.bsky.social
onlinelibrary.wiley.com/doi/10.1111/...
@globalchangebio.bsky.social: Soil organic carbon (SOC) is key for #enhancedweathering. We found negligible inorganic CO₂ removal, but considerable SOC storage potential. @boitolucilla.bsky.social @arthurvienne.bsky.social @patrickfrings.bsky.social
onlinelibrary.wiley.com/doi/10.1111/...
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.
🌊
🌊
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.
🌊
🌊
Reposted by Arthur Vienne
One of the people fired from NOAA today is the director of the Ocean Acidification Program. That program also leads the U.S. government's effort on marine carbon dioxide removal (mCDR). The destruction of American science is incomprehensible.
Home - NOAA Ocean Acidification Program
NOAA's Ocean Acidification Program prepares us for the impacts of ocean acidification through research and interdisciplinary partnerships.
oceanacidification.noaa.gov
February 27, 2025 at 11:31 PM
One of the people fired from NOAA today is the director of the Ocean Acidification Program. That program also leads the U.S. government's effort on marine carbon dioxide removal (mCDR). The destruction of American science is incomprehensible.
www.planetarytech.com/1k-tonnes/ exciting news for OAE
Major Milestone: 1,000 Tonnes Removed And Counting - Planetary Technologies
A Major Milestone: 1,000 Tonnes of Carbon Removed – With More To Come Dartmouth, Nova Scotia — Planetary has successfully removed 1,000 net tonnes of CO2 directly from the atmosphere through its ocean...
www.planetarytech.com
February 28, 2025 at 12:16 PM
www.planetarytech.com/1k-tonnes/ exciting news for OAE
www.nature.com/articles/s41...
1 mol Mg2SiO4 + 2 mol CaCO3 => 2 MgO + Ca2SiO4 (and approx 3 mol CO2 emitted for calcination) gives 8 mol CO2, or net 5 mol CO2 sequestered.👏
Interesting thermochemical olivine upgrading approach and an alternative to electrochemical olivine ==> Mg(OH)2. (1/2)
1 mol Mg2SiO4 + 2 mol CaCO3 => 2 MgO + Ca2SiO4 (and approx 3 mol CO2 emitted for calcination) gives 8 mol CO2, or net 5 mol CO2 sequestered.👏
Interesting thermochemical olivine upgrading approach and an alternative to electrochemical olivine ==> Mg(OH)2. (1/2)
Thermal Ca2+/Mg2+ exchange reactions to synthesize CO2 removal materials - Nature
Reactions of Mg-rich silicates with calcium carbonates/sulfates result in the formation of materials that could potentially be used for low-cost carbon dioxide removal from the atmosphere.
www.nature.com
February 24, 2025 at 12:43 PM
www.nature.com/articles/s41...
1 mol Mg2SiO4 + 2 mol CaCO3 => 2 MgO + Ca2SiO4 (and approx 3 mol CO2 emitted for calcination) gives 8 mol CO2, or net 5 mol CO2 sequestered.👏
Interesting thermochemical olivine upgrading approach and an alternative to electrochemical olivine ==> Mg(OH)2. (1/2)
1 mol Mg2SiO4 + 2 mol CaCO3 => 2 MgO + Ca2SiO4 (and approx 3 mol CO2 emitted for calcination) gives 8 mol CO2, or net 5 mol CO2 sequestered.👏
Interesting thermochemical olivine upgrading approach and an alternative to electrochemical olivine ==> Mg(OH)2. (1/2)
Reposted by Arthur Vienne
Biochar and Silicon: A Sustainable Boost for Rice Yields
https://buff.ly/4aVkd38
#Biochar #CarbonCapture #Pyrolysis
https://buff.ly/4aVkd38
#Biochar #CarbonCapture #Pyrolysis
February 10, 2025 at 10:21 PM
Biochar and Silicon: A Sustainable Boost for Rice Yields
https://buff.ly/4aVkd38
#Biochar #CarbonCapture #Pyrolysis
https://buff.ly/4aVkd38
#Biochar #CarbonCapture #Pyrolysis
Reposted by Arthur Vienne
Biochar’s Big Year: 107,000 Tonnes Delivered Amid 8M Tonne Carbon Removal Boom
https://buff.ly/3WL5mT5
#Biochar #CarbonCapture #Pyrolysis
https://buff.ly/3WL5mT5
#Biochar #CarbonCapture #Pyrolysis
February 6, 2025 at 3:29 PM
Biochar’s Big Year: 107,000 Tonnes Delivered Amid 8M Tonne Carbon Removal Boom
https://buff.ly/3WL5mT5
#Biochar #CarbonCapture #Pyrolysis
https://buff.ly/3WL5mT5
#Biochar #CarbonCapture #Pyrolysis
Reposted by Arthur Vienne
📣Teaming up with @cbiogeo.bsky.social for a #Macrocosms experiment on algae-based #biochar & #basalt for enhanced weathering in a realistic #controlled-environment setup. #ecotron @anaeefrance.bsky.social @cnrsoccitanieest.bsky.social
Lysimeters ready!
Reach out if you have ideas to collaborate!
Lysimeters ready!
Reach out if you have ideas to collaborate!
February 10, 2025 at 4:12 PM
📣Teaming up with @cbiogeo.bsky.social for a #Macrocosms experiment on algae-based #biochar & #basalt for enhanced weathering in a realistic #controlled-environment setup. #ecotron @anaeefrance.bsky.social @cnrsoccitanieest.bsky.social
Lysimeters ready!
Reach out if you have ideas to collaborate!
Lysimeters ready!
Reach out if you have ideas to collaborate!
Reposted by Arthur Vienne
📣New preprint!
Enhanced weathering (EW) isn’t only about inorganic carbon. Our study shows (1) that weathering ≠ CO2 removal #CDR & (2) that the impact of EW on organic matter decomposition and stabilization is key for reliably estimating actual #CDR.
www.researchsquare.com/article/rs-5...
Enhanced weathering (EW) isn’t only about inorganic carbon. Our study shows (1) that weathering ≠ CO2 removal #CDR & (2) that the impact of EW on organic matter decomposition and stabilization is key for reliably estimating actual #CDR.
www.researchsquare.com/article/rs-5...
Beyond inorganic carbon: Soil organic carbon as key pathway for carbon sequestration in Enhanced Weathering
Enhanced weathering captures CO2 via two pathways: Carbonate formation and leaching of weathering products. Here, we look beyond those two pathways, identifying other CO2 sinks and sources. While proc...
www.researchsquare.com
January 31, 2025 at 9:07 AM
📣New preprint!
Enhanced weathering (EW) isn’t only about inorganic carbon. Our study shows (1) that weathering ≠ CO2 removal #CDR & (2) that the impact of EW on organic matter decomposition and stabilization is key for reliably estimating actual #CDR.
www.researchsquare.com/article/rs-5...
Enhanced weathering (EW) isn’t only about inorganic carbon. Our study shows (1) that weathering ≠ CO2 removal #CDR & (2) that the impact of EW on organic matter decomposition and stabilization is key for reliably estimating actual #CDR.
www.researchsquare.com/article/rs-5...
Reposted by Arthur Vienne
Despite the nonsense we saw from Trump yesterday, please know that climate progress is continuing through other channels...
This is important to keep in mind, every day.
This is important to keep in mind, every day.
Good climate news this (and last) week
1 China reaches peak oil
2 Global electric vehicle sales up 25% in record 2024
3 US bans future oil & gas over 625m acres of waters
4 EU bank regulator tightens ESG rules
5 China’s first-ever energy law enters into force
1/
1 China reaches peak oil
2 Global electric vehicle sales up 25% in record 2024
3 US bans future oil & gas over 625m acres of waters
4 EU bank regulator tightens ESG rules
5 China’s first-ever energy law enters into force
1/
January 21, 2025 at 3:59 PM
Despite the nonsense we saw from Trump yesterday, please know that climate progress is continuing through other channels...
This is important to keep in mind, every day.
This is important to keep in mind, every day.
Reposted by Arthur Vienne
Are enhanced rock weathering rates overestimated? Here, we aim to contribute to the conversation around quantifying carbon dioxide removal in ERW applications while highlighting three aspects of rock powders' geochemical and mineralogical compositions that can lead to overestimating rates. #CDR
Frontiers | Are enhanced rock weathering rates overestimated? A few geochemical and mineralogical pitfalls
www.frontiersin.org
January 13, 2025 at 1:56 PM
Are enhanced rock weathering rates overestimated? Here, we aim to contribute to the conversation around quantifying carbon dioxide removal in ERW applications while highlighting three aspects of rock powders' geochemical and mineralogical compositions that can lead to overestimating rates. #CDR
Interesting study that concludes processing ultramaphic rock to Mg(OH)2 may be an attractive pathway for CDR.
NEW PAPER—Suitability of rocks, minerals, and cement waste for CO2 removal via enhanced rock weathering
Read the study here:
www.nature.com/articles/s42...
#CDR #ERW
Read the study here:
www.nature.com/articles/s42...
#CDR #ERW
November 29, 2024 at 3:05 PM
Interesting study that concludes processing ultramaphic rock to Mg(OH)2 may be an attractive pathway for CDR.
Reposted by Arthur Vienne
#phd #jobalert
Within a multidisciplinary research project, funded by @ethzurich.bsky.social, we seek a doctoral student to develop and evaluate new geochemical tracers for the quantification of carbon dioxide removal following enhanced rock weathering applications.
Within a multidisciplinary research project, funded by @ethzurich.bsky.social, we seek a doctoral student to develop and evaluate new geochemical tracers for the quantification of carbon dioxide removal following enhanced rock weathering applications.
PhD Position in Geochemistry of Enhanced Rock Weathering
www.jobs.ethz.ch
November 25, 2024 at 2:19 PM
#phd #jobalert
Within a multidisciplinary research project, funded by @ethzurich.bsky.social, we seek a doctoral student to develop and evaluate new geochemical tracers for the quantification of carbon dioxide removal following enhanced rock weathering applications.
Within a multidisciplinary research project, funded by @ethzurich.bsky.social, we seek a doctoral student to develop and evaluate new geochemical tracers for the quantification of carbon dioxide removal following enhanced rock weathering applications.