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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 ...
An Updated Framework and Signal-to-Noise Analysis of Soil Mass Balance Approaches for Quantifying Enhanced Weathering on Managed Lands
Tim Jesper Suhrhoff, Tom Reershemius, Jacob S. Jordan, Shihan Li, Shuang Zhang, Ella Milliken, Boriana Kalderon-Asael, Yael Ebert, Rufaro Nyateka, Jake T. Thompson, Christopher T. Reinhard, Noah J. Planavsky
ABSTRACT:
Enhanced weathering is a promising approach for removing carbon dioxide from the atmosphere at scale while improving agricultural yields. However, accurately quantifying carbon dioxide removal in the field is critical for this approach to scale, particularly given that nearly all the current deployment activity caters to the voluntary carbon market. Here, we present an updated framework and a signal-to-noise analysis for using soil-b...
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 ...
