231 results for group: journal-article

Impact of Basalt Rock Powder on Ryegrass Growth and Nutrition on Sandy and Loamy Acid Soils

Charles Desmalles, Lionel Jordan-Meille, Javier Hernandez, Cathy L. Thomas, Sarah Dunham, Feifei Deng, Steve P. McGrath and Stephan M. Haefele ABSTRACT: Enhanced weathering of silicate rocks in agriculture is an option for atmospheric CO2 removal and fertility improvement. The objective of our work is to characterise some of the agricultural consequences of a basaltic powder amendment on soil-crop systems. Two doses of basalt (80 and 160 t ha−1) were applied to two types of slightly acid soils (sandy or silty clayey), derived from long-term trials at Bordeaux (INRAE, France) and Rothamsted Research (England), respectively. For each soil, half of ...

Increased soil CO2 emissions after basalt amendment were partly offset by biochar addition in an urban field experiment

Jennifer Newell,Rory Doherty, Gary Lyons ABSTRACT: Enhanced weathering (EW) and biochar amendment are proposed carbon dioxide removal (CDR) techniques with potential co-benefits for soil health and plant productivity. However, knowledge gaps remain regarding their impacts on soil carbon dynamics and heavy metal mobility. This study investigates the effects of basalt and biochar amendments on soil CO2 efflux (SCE), soil base cation dynamics, biomass yield and heavy metal uptake in clover (Trifolium pratense) and mustard (Brassica juncea) field plots. Despite potential CO2 uptake through weathering, we found that basalt increased SCE in both crops, ...

Pyrogenic carbon and Carbonating Minerals for Carbon Capture and Storage (PyMiCCS) Part II: Organic and Inorganic Carbon Dioxide Removal in an Oxisol

Maria-Elena Vorrath, Thorben Amann, Johannes Meyer zu Drewer, Nikolas Hagemann, Cierra Aldrich, Janine Börker, Maria Seedtke, Joscha N. Becker, Mathilde Hagens, Annette Eschenbach, Jens Hartmann ABSTRACT: Enhanced rock weathering (ERW) and pyrogenic carbon capture and storage (PyCCS, or "biochar carbon removal") are two promising carbon dioxide removal (CDR) techniques that can contribute to soil restoration. These technologies can be combined by co-application of rock powder and biochar or by co-pyrolysis of rock powder with biomass to produce rock-enhanced (RE) biochar. In a 27-week laboratory experiment, we quantified the carbon (C) sink ...

Basalt rock dust as a soil remineralizer in upland rice grown in tropical soils: residual effects on soil fertility, Si availability, and leaf anatomy

Mariana de Carvalho Ribeiro, Aline Redondo Martins, Rodrigo Silva Alves, Luís Gustavo Frediani Lessa, Hamilton Seron Pereira, Fernando Shintate Galindo, Marcelo Carvalho Minhoto Teixeira Filho, Cassio Hamilton Abreu–Junior, Arun Dilipkumar Jani, Gian Franco Capra, Antonio Ganga, Thiago Assis Rodrigues Nogueira ABSTRACT: Silicate agrominerals (SA) applied as soil remineralizers have garnered interest due to their capacity to supply plant–available nutrients while decreasing reliance on conventional mineral fertilizers (CMF). This research evaluated the residual effects of basalt rock dust (BRD), examining its role as a soil remineralizer and ...

Pyrogenic carbon and carbonating minerals for carbon capture and storage (PyMiCCS) part I: production, physico-chemical characterization and C-sink potential

Johannes Meyer zu Drewer, Maria-Elena Vorrath, Thorben Amann, Jens Hartmann, Jose Maria De la Rosa, Jens Möllmer, Sara Maria Pérez-Dalí, William Meredith, Clement Uguna, Colin Snape, Claudia Kammann, Hans-Peter Schmidt, Nikolas Hagemann ABSTRACT: Carbon dioxide removal (CDR) at gigaton-scale is essential to meet the Paris climate goals. Relevant CDR rates can only be achieved through the co-deployment of multiple CDR approaches. However, synergisms between different CDR methods and joint co-benefits beyond CDR have seldom been investigated. The combination of pyrogenic carbon (PyC) and enhanced weathering of minerals (Mi) for carbon capture ...

Activation methods for enhancing CO2 mineralization via mine tailings—A critical review

Milad Norouzpour, Rafael M. Santos, Yi Wai Chian ABSTRACT: Greenhouse gas emissions from fossil fuel combustion exacerbate global warming, necessitating scalable and cost-effective carbon capture and storage (CCS) strategies. Mineral carbonation has emerged as a promising solution, permanently converting carbon dioxide (CO2) into stable carbonates while simultaneously repurposing mine tailings for sustainable waste management. Ultramafic and mafic mine tailings, which are rich in Mg- and Ca-bearing minerals, provide abundant and reactive feedstocks for CO2 sequestration. This review examines the chemical, mineralogical, and physical characteristics ...

Potential of Co-practicing Enhanced Rock Weathering and Geologic Carbon Storage

Hang Deng, Qi Li ABSTRACT: Geologic carbon storage (GCS) is an important technology for mitigating climate change, and hundreds to thousands of gigatons of CO2 needs to be stored via GCS by 2100 to achieve the 2 °C or 1.5 °C target.1 One challenge that hinders the large-scale deployment of GCS is the risk of the injected CO2 migrating through abandoned wells and/or faults/fractures into overlying formations or the atmosphere. Assessments that considered extensive empirically measured and simulated data of GCS suggests that the surface seepage rate is highly likely to be less than 0.05% stored/year,2 corresponding to CO2 fluxes at the land surface ...

Direct measurement of carbon dioxide removal due to enhanced weathering

Ella Milliken, Alex Woodley, Noah Planavsky ABSTRACT: Enhanced weathering (EW) is a durable carbon removal strategy with clear pathways to produce significant global supply on a decadal scale. Despite increasing interest and investment in this process, there have been limited direct, continuous observations of weathering rates. In this study, we monitor a basalt-applied soybean plot in Southeast Virginia using continuous in-soil CO2 monitors. We provide clear evidence of CO2 flux reduction within the soil profile, equating to 1.04 t/ha/yr. This removal is most substantial in the active growing season and following significant rain pulses. This work ...

Soil cation storage is a key control on the carbon removal dynamics of enhanced weathering

Y. Kanzaki, N.J. Planavsky, S. Zhang, J. Jordan, T.J. Suhrhoff, C.T. Reinhard ABSTRACT: Significant interest and resources are currently being channeled into techniques for durable carbon dioxide removal (CDR) from Earth’s atmosphere. A particular class of these approaches — referred to as enhanced weathering — seeks to modify the surface alkalinity budget to store CO2 as dissolved inorganic carbon species. Here, we use a reaction-transport model designed to simulate enhanced weathering in managed lands to evaluate the throughput and storage timescales of anthropogenic alkalinity in agricultural soils in the coterminous U.S. We find that lag ...

Estimates vary but credible evidence points to gigaton-scale climate change mitigation potential of biochar

Zhe Han Weng, Annette L. Cowie ABSTRACT: Biochar is a carbon dioxide (CO2) removal strategy that supports food security, sustainable land management and the circular economy. Nineteen published studies estimate global climate change mitigation potential of biochar at 0.03 to 11 Pg CO2 equivalent yr−1. Reconciling this range requires consideration of biochar science. Biochar systems durably sequester carbon, can reduce soil greenhouse gas (GHG) emissions, displace fossil fuel emissions through use of syngas, and avoid GHG emissions from residues. We reviewed the contributions to CO2 removal and GHG emissions reduction. Divergence between studies ...