Category: Peer-reviewed Publications

Peer-reviewed Publications

Li et al. (2024): Carbon removal, sequestration and release by mariculture in an important aquaculture area, China

Wei Li, Xu Li, Chi Song, Guang Gao IN: Science of The Total Environment 927, 172272, https://doi.org/10.1016/j.scitotenv.2024.172272

In this paper, carbon removal, release and sequestration by maricultured seaweeds, shellfish and fish in Shandong Province during 2003–2022 were assessed using a comprehensive method that considers the processes of biological metabolism, seawater chemistry and carbon footprint.

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Peer-reviewed Publications

López et al. (2024): Indoor CO2 direct air capture and utilization: Key strategies towards carbon neutrality

L.R. López, P. Dessì, A. Cabrera-Codony, L. Rocha-Melogno, N.J.R. Kraakman, M.D. Balaguer, S. Puig IN: Cleaner Engineering and Technology 20, 100746, https://doi.org/10.1016/j.clet.2024.100746

One application of DAC is indoor CO2 direct air capture (iCO2-DAC). A wide range of materials with unique properties for CO2 capture have been investigated, including porous materials, zeolites, and metal-organic frameworks. This review article highlights the importance of iCO2-DAC to improve indoor air quality in buildings and boost the circular economy. It discusses the available carbon capture technologies and materials, discussing their properties and focusing on those potentially applicable to indoor environments.

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Peer-reviewed Publications

Salekin et al. (2024): Carbon sequestration potential of plantation forests in New Zealand – no single tree species is universally best

Serajis Salekin, Yvette L. Dickinson, Mark Bloomberg, Dean F. Meason IN: Carbon Balance and Management 19, 11, https://doi.org/10.1186/s13021-024-00257-1

Plantation forests are a nature-based solution to sequester atmospheric carbon and, therefore, mitigate anthropogenic climate change. The choice of tree species for afforestation is subject to debate within New Zealand. Two key issues are whether to use (1) exotic plantation species versus indigenous forest species and (2) fast growing short-rotation species versus slower growing species. In addition, there is a lack of scientific knowledge about the carbon sequestration capabilities of different plantation tree species, which hinders the choice of species for optimal carbon sequestration. This paper contributes to this discussion by simulating carbon sequestration of five plantation forest species, Pinus radiata, Pseudotsuga menziesii, Eucalyptus fastigata, Sequoia sempervirens and Podocarpus totara, across three sites and two silvicultural regimes by using the 3-PG an ecophysiological model.

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Peer-reviewed Publications

Günther et al. (2024): Carbon farming, overestimated negative emissions and the limits to emissions trading in land-use governance: the EU carbon removal certification proposal

Philipp Günther, Beatrice Garske, Katharine Heyl, Felix Ekardt IN: Environmental Sciences Europe 36, 72, https://doi.org/10.1186/s12302-024-00892-y

This article conducts a qualitative governance analysis of the European Commission’s 2022 proposal for a certification framework for carbon removals (CRCF). It highlights potential challenges and legal implications—with a specific focus on carbon farming.

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Peer-reviewed Publications

Mwaura et al. (2024): Do smallholders have a role to play in atmospheric greenhouse gas removal? Insights from western Kenya

Francis M. Mwaura, Margaret W. Ngigi, Gideon Obare IN: Scientific African 24, e02206, https://doi.org/10.1016/j.sciaf.2024.e02206

Despite consensus by the international community on the need for setting targets for reducing emissions or enhancing removal of greenhouse gases, comprehensive strategies for enumerating smallholders’ roles are yet to be designed and tested. Moreover, although smallholders’ role as net greenhouse gas removers has been speculated, evidence of this fact is necessary. A survey of 380 smallholders involved in maize-farming system in four sub-counties of western Kenya representing heterogeneity in agro-ecological zones and postulated biomass cooking energy access and demand was undertaken. 

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Peer-reviewed Publications

Suhrhoff et al. (2024): A tool for assessing the sensitivity of soil-based approaches for quantifying enhanced weathering: a US case study

Tim Jesper Suhrhoff, Tom Reershemius, Jiuyuan Wang, Jacob S. Jordan, Christopher T. Reinhard, Noah J. Planavsky IN: Frontiers in Climate, https://doi.org/10.3389/fclim.2024.1346117

Enhanced weathering (EW) of silicate rocks spread onto managed lands as agricultural amendments is a promising carbon dioxide removal (CDR) approach. However, there is an obvious need for the development of tools for Measurement, Reporting, and Verification (MRV) before EW can be brought to scale. Shifts in the concentration of mobile elements measured in the solid phase of soils after application of EW feedstocks can potentially be used to track weathering and provide an estimate of the initial carbon dioxide removal of the system. To measure feedstock dissolution accurately it is necessary to control for the amount of feedstock originally present in the sample being analyzed. This can be achieved by measuring the concentration of immobile detrital elements in soil samples after feedstock addition. 

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Peer-reviewed Publications

Gama et al. (2024): Process Operability Analysis of Membrane-Based Direct Air Capture for Low-Purity CO2 Production

Vitor Gama, Beatriz Dantas, Oishi Sanyal, Fernando V. Lima IN: ACS Engineering Au, https://doi.org/10.1021/acsengineeringau.3c00069

This study investigates the feasibility of using membranes as direct air capture (DAC) technology to extract CO2 from atmospheric air to produce low-purity CO2. In this work, a two-stage hollow fiber membrane module process is designed and modeled using the AVEVA Process Simulation platform to produce a low-purity (≈5%) CO2 permeate stream. Such low-purity CO2 streams could have several possible applications such as algae growth, catalytic oxidation, and enhanced oil recovery. An operability analysis is performed by mapping a feasible range of input parameters, which include membrane surface area and membrane performance metrics, to an output set, which consists of CO2 purity, recovery, and net energy consumption.

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Peer-reviewed Publications

Bona et al. (2024): Using the Canadian Model for Peatlands (CaMP) to examine greenhouse gas emissions and carbon sink strength in Canada’s boreal and temperate peatlands

Kelly A. Bona, Kara L. Webster, Dan K. Thompson, Oleksandra Hararuk, Gary Zhang, Werner A. Kurz IN: Ecological Modelling, 490, 110633, https://doi.org/10.1016/j.ecolmodel.2024.110633

This study applied the Canadian Model for Peatlands (CaMP) to 63.9 million hectares of peatlands within boreal and temperate ecozones of Canada to assess the trends in atmospheric carbon (C) emissions and removals and C sequestration over 30 years (1990–2019). While this research is the first to produce estimates of C sequestration and greenhouse gas emission and removal rates across such a large area of Canada, further research is required across peatland types and ecozones to improve parameterization, validation, and process representations. The results stress the importance of ecozone-specific analyses and accounting for infrequent large fire years and fire risk in land management policy and carbon accounting.

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Peer-reviewed Publications

Silcox & Chandran (2024): Demand-side flexibility enables cost savings ina reversible pH-swing electrochemical processfor oceanic CO2 removal

Rachel Silcox, Rohini Bala Chandran IN: Cell Reports Physical Science, 5, https://doi.org/10.1016/j.xcrp.2024.101884

A reversible pH-shifting seawater process uses hydrogen and redox salt to extract CO2, generating and consuming power during acidification and basification, respectively. An equivalent circuit model predicts performance dependent on key transport and thermodynamic parameters. The need to overcome mass-transport limitations, particularly liquid boundarylayer diffusion, is crucial for industrial current densities. Energy-intensity calculations indicate this process is competitive with prior oceanic CO2 removal processes and even with direct air capture, when pumping energy cost is eliminated.

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Peer-reviewed Publications

Abegg et al. (2024): Expert Insights into Future Trajectories: Assessing Cost Reductions and Scalability of Carbon Dioxide Removal Technologies

Manon Abegg, Zeynep Clulow, Lucrezia Nava, David M. Reiner IN: Frontiers in Climate, doi:10.3389/fclim.2024.1331901

This study explores the future costs and scalability of DACCS and BECCS to advance net-zero goals. The authors analyze expert opinions on these technologies’ potential costs and deployment scales for 2030, 2040, and 2050. Data was collected from 34 experts, comprising 21 DACCS and 13 BECCS specialists. They provided 90% confidence interval estimates and ‘best estimates’ for future costs and deployment under two International Energy Agency (IEA) policy scenarios -Stated Policies (STEPS) and Net Zero Emissions by 2050 (NZE).

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