156 results for group: carbon-sequestration-1
A Novel Soil Porewater Extraction Technique for Enhanced Rock Weathering Products: SATuration – Centrifugation – Preprint
Kirstine Skov, Anežka Radkova, Kitty Agace, Talal Albahri, Matt Aitkenhead, Tzara Bierowiec, David Boldrin et al.
ABSTRACT:
Enhanced Rock Weathering (ERW) involves the application of crushed silicate-rich minerals to agricultural soils as a promising Carbon Dioxide Removal (CDR) strategy, with potential benefits for soil health and crop productivity. Effective Monitoring, Reporting, and Verification (MRV) techniques are essential for carbon credit validation and scalability of ERW. Current MRV methods, such as in-field soil porewater extraction, represent a potential barrier for scaling up ERW because the accuracy, sensitivity, and consiste...
Ocean alkalinity enhancement mentioning Coastal enhanced weathering?
James Campbell, Spyros Foteinis, Reinaldo Juan Lee Pereira, Mohamad Katish, Phil Renforth
ABSTRACT:
Ocean alkalinity enhancement is a promising carbon dioxide removal (CDR) approach, but scaling up to gigatonnes (Gt) of CO2 per year will require safe, sustainable, and abundant alkaline feedstocks. Here, we propose the use of a relatively unexplored resource for OAE, namely naturally occurring sodium (bi)carbonates. We identified and mapped 109 such deposits globally, although quantitative resource information is available for only 16. Quantified deposits collectively contain >200 Gt of sodium (bi)carbonate-rich minerals and brines, domina...
Biodiversity implications of land-intensive carbon dioxide removal
Ruben Prütz, Joeri Rogelj, Gaurav Ganti, Jeff Price, Rachel Warren, Nicole Forstenhäusler, Yazhen Wu, Andrey Lessa Derci Augustynczik, Michael Wögerer, Tamás Krisztin, Petr Havlík, Florian Kraxner, Stefan Frank, Tomoko Hasegawa, Jonathan C. Doelman, Vassilis Daioglou, Florian Humpenöder, Alexander Popp, Sabine Fuss
ABSTRACT:
Pathways consistent with global climate objectives typically deploy billions of tonnes of carbon dioxide removal (CDR) from land-intensive methods such as forestation and bioenergy with carbon capture and storage. Such large-scale deployment of land-intensive CDR may have negative consequences for biodiversity. Here ...
Spatiotemporal soil fertility responses to an enhanced rock weathering deployment within a temperate, agricultural watershed
Quinn Zacharias, Robert Rioux, Fengchao Sun, Wyatt Tatge, Evelin Pihlap,
Emmanuel Nyavor, David Foster, Joshua L. Warren, Mark A. Bradford,
Peter A. Raymond, Noah Planavsky, James E. Saiers
ABSTRACT:
Enhanced rock weathering (ERW) is a promising strategy for removing carbon dioxide
from the atmosphere, yet field-scale observations suitable for evaluating ERW
co-benefits related to soil-fertility improvements within temperate agriculture
settings remain scarce. We conducted a 2.5-year investigation within a headwater
catchment at the Sleepers River Research Watershed in Danville, Vermont, applying
...
Bridging time lags in durable carbon removal on working lands
Noah J. Planavsky, Beck J. Woollen, Ella Milliken, Mojtaba Fakhraee, David J. Beerling, Christopher T. Reinhard
ABSTRACT:
Enhanced weathering and biochar application on working lands show promising signs of delivering durable carbon dioxide removal required to meet internationally agreed upon climate change mitigation goals. Although both technologies can scale comparatively quickly, their ability to offset radiative forcing from anthropogenic greenhouse gas emissions is delayed by time lags between deployment and realized carbon removal. Here, we suggest that coupling enhanced weathering and biochar with point-source methane emissions reducti...
Multiple Lines of Evidence Reveal Rapid, Seasonal Watershed Responses to Enhanced Weathering
Fengchao Sun, Robert Rioux, Tim Suhrhoff, Wyatt Tatge, Boriana Kalderon-Asael, Quinn Zacharias, William Miller-Brown, Aaron MacDonald, Esmeralda Garcia, Jamie Shanley, Peter Raymond, Noah Planavsky, James Saiers
ABSTRACT:
Enhanced rock weathering (ERW) is a natural carbon dioxide removal (CDR) approach that captures CO2 by accelerating silicate weathering using crushed rocks. A major question on the efficacy of ERW is how fast and efficient it is at transporting the products of weathering to drainage networks, and ultimately the ocean. Using a novel whole watershed experiment, we report multiple lines of evidence of rapid and pronounced streamwater ...
Direct In Situ Measurement of Alkalinity Export for Real-Time Enhanced Weathering MRV
Andrew Muth, Jonte Boysen, Pascal Michel
ABSTRACT:
Accurate quantification of alkalinity export from the near-field zone remains a key bottleneck for monitoring, reporting, and verification (MRV) of carbon dioxide removal (CDR) through Enhanced Weathering (EW). Here we validate the Everest Pulsar, a field-deployable alkalinity sensor that accumulates total alkalinity (TA) using a weak acid ion-exchange resin and transduces resin saturation into a digital, in situ measurement. In a 7-day continuous-flow soil column experiment (10 no-soil, 5 soil units), the sensor quantitatively retained incoming alkalinity, with capture efficiencies of 98.9% ...
LEAVE NO STONE UNTURNED: THE IMPORTANCE OF ROCK CHOICE FOR SCALING ENHANCED WEATHERING FOR CARBON DIOXIDE REMOVAL
Maurice Bryson
SUMMARY:
The devastating effects of breaching climatic tipping points and our current greenhouse gas emissions trajectory mean that society
must rapidly decarbonize and durably and safely remove and store carbon dioxide (CO2) at an unprecedented scale. To reduce
atmospheric CO2 concentrations to pre-industrial levels, the carbon dioxide removal (CDR) industry will have to remove
approximately 1,000 billion tonnes of CO2 from the atmosphere.
What options do we have to tackle this seemingly intractable problem and reach climate-relevant scales of CDR? One promising
solution uses rocks and rain to durably remove and store atmosphe...
Long-term carbon dioxide removal potential from the application of wood biochar and basanite rock powder in sandy soil using the LiDELSv2 process-based modeling approach
Mikita Maslouski, Maria Ansari, Susanne E Hamburger, Johannes Meyer zu Drewer, Nikolas Hagemann, Annette Eschenbach, Christian Beer, Joscha N Becker, Claudia I Kammann, Maria-Elena Vorrath, Philipp Porada
ABSTRACT:
The rise in atmospheric carbon dioxide (CO2) concentrations requires scalable and effective carbon dioxide removal (CDR) strategies. pyrogenic carbon capture and storage relies on the pyrolysis of biomass and the non-oxidative use of biochar, e.g. in soils. Enhanced rock weathering (ERW) captures CO2 by forming dissolved bicarbonate. In addition to CDR, both methods may offer soil improvement as a co-benefit. However, their interaction ...
Cropland enhanced weathering in low GDP regions for gigaton scale carbon removal with potential economic co-benefits
Bingzheng Wang, Fengqi You
ABSTRACT:
Enhanced rock weathering (ERW) applies crushed silicate rocks like basalt to croplands and offers significant potential for atmospheric carbon dioxide removal (CDR). Here, we explored the potential of ERW as a bridge for sharing decarbonization responsibilities, with less-developed regions contributing cropland deployment and more developed regions providing financial support, thereby enhancing equity in global decarbonization. Low GDP regions (bottom 50% GDP administrative region as a case) in major global economies contribute 55%–89% of the total national or continental ERW decarbonization potential. ...
