244 results for group: journal-article
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. ...
Carbon dioxide removal during dissolution of granular basalt: A mass balance test of enhanced rock weathering at the hillslope scale
Charles J. Cunningham, Andrew Guertin, Marine Gelin, Louis A. Derry, Hannes H. Bauser, Minseok Kim, Jennifer L. Druhan, Scott Saleska, Peter A. Troch, Jon Chorover
ABSTRACT:
Enhanced rock weathering (ERW) is proposed as a carbon dioxide removal (CDR) strategy that sequesters carbon through the carbonic acid-promoted dissolution of ground silicate rocks. Studies have explored the efficacy of ERW through geochemical models and bench-scale reactors, but field-scale experimentation is limited. A year-long, replicated study was conducted at the Landscape Evolution Observatory (LEO) at Biosphere 2 to quantify basaltic CDR at the hillslope scale. LEO ...
Calcium-rich parent materials enhance multiple soil functions and bacterial network complexity
Peilei Hu, Wei Zhang, Wolfgang Wanek, Ji Chen, Diego Abalos, Jie Zhao, Dan Xiao, Xinyu Hou, Juan Li, Hongsong Chen, Jun Xiao, Xionghui Liao, Tiangang Tang, Hanqing Wu, Kelin Wang
ABSTRACT:
Parent material shapes soil properties, yet its effects on soil functions and microbial networks remain unclear. Here we investigate these relationships using a large-scale field survey comparing soils derived from calcium-rich carbonate rocks and calcium-poor clastic rocks, complemented by a microcosm experiment. Soils from calcium-rich parent materials contained 33% higher organic carbon, 58% higher total nitrogen, and 55% higher total phosphorus than calcium-...
Valorization of mineral by-products through soil remineralization enhances sustainable agriculture and circular economy outcomes
Hugo Hernández Palma, Anderson Isaías Nieto Granados, Alcindo Neckel, Diana Pinto Osorio, Andrea Liliana Moreno Ríos, Claudete Gindri Ramos
ABSTRACT:
Soil remineralization using rock powders derived from mining and industrial by-products has gained attention as a sustainable strategy to restore degraded soils, improve fertility, and reduce reliance on synthetic fertilizers. These materials, rich in nutrients and beneficial minerals, also offer potential for carbon sequestration and contribute to circular economy practices by repurpose byproducts into agricultural inputs. This review aims to critically synthesize the current state of research on ...
Optimizing nutrient stoichiometry for enhanced carbon sequestration in agricultural soils
Munazza Yousra, Qaiser Hussain, Khalid Saifullah Khan, Sair Sarwar, Muhammad Mahmood-ul-Hassan
ABSTRACT:
Nutrients like nitrogen (N), phosphorus (P), and sulphur (S) play a critical role in plant and microbial growth, as well as in stabilizing soil organic carbon (SOC). Humus, the most stable fraction of soil organic matter (SOM), maintains a consistent elemental ratio of C:N:P:S at 10,000:833:200:143. To evaluate how variations in this humus based C:N:P:S ratio affect SOC stabilization, a six-month laboratory incubation was conducted using selected benchmark soil series. The soils were amended with wheat straw (WS) and maize straw (MS), both with ...
Leveraging ecosystems responses to enhanced rock weathering in mitigation scenarios
Yann Gaucher, Katsumasa Tanaka, Daniel J. A. Johansson, Daniel S. Goll, Philippe Ciais
ABSTRACT:
Carbon dioxide removal (CDR) is deemed necessary to attain the Paris Agreement’s climate objectives. While bioenergy with carbon capture and storage (BECCS) has generated substantial attention, sustainability concerns have led to increased examination of alternative strategies, including enhanced rock weathering (EW). We analyse the role of EW under cost-effective mitigation pathways, by including the CDR potential of basalt applications from silicate weathering (geochemical CDR) and enhanced ecosystem growth and carbon storage in response to phospho...
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 reductions ...
Atmospheric carbon dioxide mineralisation in anthropogenically-derived carbonate deposits
John MacDonald, Charlotte Slaymark, Amanda Stubbs, Marta Kalabová
ABSTRACT:
Removing carbon dioxide from the atmosphere is important in minimising the impact of anthropogenically-induced climate change. Anthropogenic geomaterials, such as slag and cement, can be utilised in an engineered context for mineralising CO2. However, such anthropogenic geomaterials, typically waste products, were usually deposited on the land surface and left to passively mineralise CO2, resulting in the formation of anthropogenic carbonates. In this study, we document anthropogenic carbonates from a suite of locations across Scotland and Northern England, and use stable ...
