4 results for group: steven-banwart
Substantial carbon drawdown potential from enhanced rock weathering in the United Kingdom
Euripides P. Kantzas, Maria Val Martin, Mark R. Lomas, Rafael M. Eufrasio, Phil Renforth, Amy L. Lewis, Lyla L. Taylor, Jean-Francois Mecure, Hector Pollitt, Pim V. Vercoulen, Negar Vakilifard, Philip B. Holden, Neil R. Edwards, Lenny Koh, Nick F. Pidgeon, Steven A. Banwart, David J. Beerling
Abstract
Achieving national targets for net-zero carbon emissions will require atmospheric carbon dioxide removal strategies compatible with rising agricultural production. One possible method for delivering on these goals is enhanced rock weathering, which involves modifying soils with crushed silicate rocks, such as basalt. Here we use dynamic carbon ...
Simulating carbon capture by enhanced weathering with croplands: an overview of key processes highlighting areas of future model development
Lyla L. Taylor, David J. Beerling, Shaun Quegan, Steven A. Banwart
Abstract
Enhanced weathering (EW) aims to amplify a natural sink for CO2by incorporating powdered silicate rock with high reactive surface area into agricultural soils. The goal is to achieve rapid dissolution of minerals and release of alkalinity with accompanying dissolution of CO2into soils and drainage waters. EW could counteract phosphorus limitation and greenhouse gas(GHG) emissions in tropical soils, and soil acidification, a common agricultural problem studied with numerical process models over several decades. Here, we review the processes leading to soil acidifica...
Effects of mineralogy, chemistry and physical properties of basalts on carbon capture potential and plant-nutrient element release via enhanced weathering
Amy L.Lewis, Binoy Sarkar, Peter Wadea, Simon J.Kemp, Mark E.Hodson, Lyla L.Taylor, Kok Loong Yeong, Kalu Davies, Paul N.Nelson, Michael I.Bird, Ilsa B.Kantola, Michael D.Masters, Evan DeLucia, Jonathan R.Leake, Steven A.Banwart, David J.Beerling
Abstract
Mafic igneous rocks, such as basalt, are composed of abundant calcium- and magnesium-rich silicate minerals widely proposed to be suitable for scalable carbon dioxide removal (CDR) by enhanced rock weathering (ERW). Here, we report a detailed characterization of the mineralogy, chemistry, particle size and surface area of six mined basalts being used in large-scale ERW field trials. We use 1-D ...
Increased yield and CO2 sequestration potential with the C4 cereal Sorghum bicolor cultivated in basaltic rock dust-amended agricultural soil
Mike E. Kelland, Peter W. Wade, Amy L. Lewis, Lyla L. Taylor, Binoy Sarkar, M. Grace Andrews, Mark R. Lomas, T. E. Anne Cotton, Simon J. Kemp, Rachael H. James, Christopher R. Pearce, Sue E. Hartley, Mark E. Hodson, Jonathan R. Leake, Steven A. Banwart, David J. Beerling
Abstract
Land-based enhanced rock weathering (ERW) is a biogeochemical carbon dioxide removal (CDR) strategy aiming to accelerate natural geological processes of carbon sequestration through application of crushed silicate rocks, such as basalt, to croplands and forested landscapes. However, the efficacy of the approach when undertaken with basalt, and its potential co-benefits ...