Rafael M. Santos, Francisco Araujo, Hiral Jariwala, Reza Khalidy,
Fatima Haque and Yi Wai Chiang
Enhanced rock weathering (ERW), as a negative emissions technology for climate change mitigation, has received far more public, governmental, and academic attention (according to the authors’ account of engagement with such actors) in the past year than in the many years since its first mention in the literature. The term ERW was conceived by Beerling (2017), but the field of research referred to as “enhanced weathering” (EW) can see
its origins, by this name, at least as far back as the works of Power and Southam (2005) and Lenton ...
Fuxing Guo, Haowei Sun, Jing Yang, Linsen Zhang, Yan Mu, Yanping Wang, Fuyong Wu
Enhanced rock weathering (ERW) in farmland is an emerging carbon dioxide removal technology with crushed silicate rocks for soil improvement. However, due to climatic variability and field data limitations, uncertainties remain regarding the influence of ERW on food security and soil carbon pools in temperate regions. This study focused to evaluate the crop productivity and carbon sequestration potential of farmland ERW in China by conducting field monitoring in different humid regions and ERW performance model. Additionally, the contribution of climate, ...
David J. Beerling, Dimitar Z. Epihov, Ilsa B. Kantola, Michael D. Masters, Tom Reershemius, Noah J. Planavsky, Christopher T. Reinhard, Jacob S. Jordan, Sarah J. Thorne1, James Weber, Maria Val Martin, Robert P. Freckleton, Sue E. Hartley, Rachael H. James, Christopher R. Pearce, Evan H. DeLucia, Steven A. Banwart
Enhanced weathering (EW) with crushed basalt on farmlands is a promising
scalable atmospheric carbon dioxide removal strategy that urgently requires
performance assessment with commercial farming practices. Our large-scale
replicated EW field trial in the heart of the U.S. Corn Belt shows cumulative time integrated carbon ...
Fatima Haque, Rafael M. Santos, Yi Wai Chiang
Carbon dioxide (CO2) is a major greenhouse gas, and its concentration in the atmosphere is increasing continuously, hence there is an urgent need to reduce its level in the atmosphere. Soils offer a large natural sink to store CO2. This study focuses on sequestering CO2 in the agricultural soils as inorganic carbon, which can be accomplished by adding alkaline-earth silicates. Wollastonite is used in this study as a soil amendment, to sequester CO2 via the geochemical route of mineral carbonation. The first objective of the present study was to evaluate the effect of mixing a wide range of ...
Robert J. Zomer, Deborah A. Bossio, Rolf Sommer, Louis V. Verchot
The role of soil organic carbon in global carbon cycles is receiving increasing attention both as a potentially large and uncertain source of CO2 emissions in response to predicted global temperature rises, and as a natural sink for carbon able to reduce atmospheric CO2. There is general agreement that the technical potential for sequestration of carbon in soil is signifcant, and some consensus on the
magnitude of that potential. Croplands worldwide could sequester between 0.90 and 1.85 Pg C/yr, i.e. 26–53% of the target of the “4p1000 Initiative: Soils for Food ...
Prof. Dr. Antonio Nilson Zamunér Filho – UFCAT/FENG
Prof. Dr. Antover Panazollo Sarmento – UFCAT/FENG
Healthy soils provide the largest reserve of terrestrial carbon. When managed
irresponsibly or cultivated through unsustainable agricultural practices, the carbon present in the soil can be released into the atmosphere in the form of carbon dioxide (CO2), which can contribute to climate change. The constant conversion of forests to agricultural land and pastures has resulted in historical losses of soil carbon worldwide, however, with the restoration of degraded soils and the adoption of soil conservation ...
Andrea Hicks, Pratik Dholabhai, Asif Ali, Rafael M. Santos
There is now a dire demand for negative emissions technologies (which sequester CO2 from the atmosphere) that can be rapidly deployed, are scalable, and are demonstrably safe and effective. Enhanced weathering of silicate minerals has demonstrated a significant potential for CO2 capture and sequestration by the formation of pedogenic carbonates in soils, subsoils, and sediments. This technique has also been shown to deliver fruitful results in terms of improving soil health, and in turn plant health, through remineralization. The silicate minerals that possess the highest ...
Enhanced weathering (EW) is increasingly proposed as a promising negative emission
technology that sequesters atmospheric carbon dioxide without substantially changing
established agricultural practices. Current estimates suggest enhanced weathering
could remove 0.5-4 GtCO2 yr-1 globally by the end of this century (Smith et al., 2015) which equates to a substantial fraction of global anthropogenic emissions (49 GtCO2eq yr-1; IPCC, 2014). However, these estimates are based on limited experimental
assessment of the complexities of the soil environment which inhibit alkalinity release, and existing pot and core ...
Patrick J. Frings, Wim Clymans, Guillaume Fontorbe, William Gray, Govind J. Chakrapani, Daniel J. Conley, Christina De La Rocha
The Ganges is one of the world’s largest rivers and lies at the heart of a body of literature that investigates the interaction between mountain orogeny, weathering and global climate change. Three regions can be recognised in the Ganges basin, with the Himalayan orogeny to the north and the plateaus of peninsular India to the south together delimiting the Ganges alluvial plain. Despite constituting approximately 80%
of the basin, weathering processes in the peninsula and alluvial plain have received little ...
PHILIPPE HINSINGER, OMAR NETO FERNANDES BARROS, MARC F. BENEDETTI, YVES NOACK, GABRIEL CALLOT
Abstract—The active role of higher plants in the weathering of silicate minerals and rocks is still a question for debate. The present work aimed at providing experimental evidence of the important role of a range of crop plants in such processes. In order to quantitatively assess the possible effect of these diverse plant species on the weathering of a basaltic rock, two laboratory experiments were carried out at room temperature. These compared the amounts of elements released from basalt when leached with a dilute salt solution in the ...