Schlagwort: DACCS

Griffiths et al. (2024): Solid oxide fuel cells with integrated direct air carbon capture: A techno-economic study

Imogen Griffiths, Ruiqi Wang, Janie Ling-Chin, Anthony Paul Roskilly IN: Energy Conversion and Management, 315, 118739, https://doi.org/10.1016/j.enconman.2024.118739

This paper aims to analyse the technical and economic feasibility of utilising a hydrogen fed solid oxide fuel cell as a source of both electricity and high-grade heat for the process of direct air carbon capture. It is vital that a renewable form of hydrogen production is used for this process to be sustainable, therefore a renewable hydrogen fed 50 MW solid oxide fuel cell is modelled, integrated with a direct air carbon capture process, resulting in a system with the capacity to remove carbon dioxide just over 270 kt/year directly from the air.

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Yi et al. (2024): Review on Advances and Prospectives of Direct Air Capture: Thermodynamic Verification, Optimized Material Selection, and Technical Economic Assessment for the Application

Chao Yi, Bin Guan, Zhongqi Zhuang, Junyan Chen, Jiangfeng Guo, Yujun Chen, Zeren Ma, Chenyu Zhu, SiKai Zhao, Hongtao Dang, Lei Chen, Kaiyou Shu, Yuan Li, Kuangyi Shi, Zelong Guo, Jingqiu Hu, Xuehan Hu, Zhen Huang IN: Industrial & Engineering Chemistry Research, https://doi.org/10.1021/acs.iecr.4c00684

This paper first summarizes the different systems DAC can deal with, such as gas/solid, gas/liquid, and gas/polymer systems, and then illustrates the thermodynamic feasibilities of DAC under each condition. From a perspective of industrial practice, the review presents several hopeful chemical technologies from many aspects including capturing material, process flow, and techno-economic analysis, with contents allocated by the maturity of the technology. This review especially analyzes demonstration plants like Climeworks and explores experiences about how to transform early laboratory results based on unit operation into large-scale production. 

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Monteagudo et al. (2024): Investigation of effectiveness of KOH-activated olive pomace biochar for efficient direct air capture of CO2

J.M. Monteagudo, A. Durán, M. Alonso, Anca-Iulia Stoica IN: Separation and Purification Technology, 352, 127997, https://doi.org/10.1016/j.seppur.2024.127997

In this work, the activation of olive pomace biochar with potassium hydroxide, KOH, has been studied for its use as a CO2 adsorbent. The effectiveness of biochar activated with KOH at 750 °C in an inert N2 atmosphere was evaluated, using different mass ratios of biochar/KOH, 1:0.5, 1:1, and 1:2. Various characterisation analyses of the biochar were performed to determine its chemical composition, specific surface area, pore size and volume, structure, morphology, and functional groups. The adsorption isotherm was determined at atmospheric pressure and a temperature of 10 °C. The experimental equilibrium results were fitted to the Langmuir, Freundlich, and Temkin models. Additionally, the kinetic behavior of biochar/KOH as an adsorbent was studied, and dynamic experiments were conducted at atmospheric pressure and 10 °C.

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Fulham et al. (2024): Managing intermittency of renewable power in sustainable production of methanol, coupled with direct air capture

George J. Fulham, Paula V. Mendoza-Moreno, Ewa J. Marek IN: Energy and Environmental Science, DOI: 10.1039/D4EE00933A

Coupling direct air capture (DAC) with methanol production is a technically attainable opportunity for CO2 capture and utilisation (CCU). The process, known as power-to-methanol (PtM), consumes large amounts of renewable electricity for water electrolysis and DAC. However, the time-variability of renewable power remains a major challenge. Here, the authors consider erecting a wind farm as part of a PtM facility and propose using four parallel reactors to adjust the methanol production according to daily wind power generation, which we model for 90 onshore and offshore locations with real-world data. Batteries and reserve storage of compressed H2 and CO2 allow methanol production during near-zero availability of wind power. They investigate different operation strategies, aiming to either minimise the reserve storage or maximise production, ultimately finding minimised storage as more cost-effective.

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Gray et al. (2024): The role of direct air carbon capture in decarbonising aviation

Nathan Gray, Richard O’Shea, Beatrice Smyth, Piet N.L. Lens, Jerry D. Murphy IN: Renewable and Sustainable Energy Reviews, 199, 114552; https://doi.org/10.1016/j.rser.2024.114552

This study compares two use cases of direct air carbon capture to decarbonise aviation, from an economic and environmental perspective. The first is where continued use of fossil jet fuel is offset by capturing and sequestering CO2 from the atmosphere. The second is where CO2 captured from the atmosphere is used as a feedstock, in conjunction with hydrogen from electrolysis, to produce a synthetic jet fuel.

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Terlouw et al. (2024): Assessment of Potential and Techno-Economic Performance of Solid Sorbent Direct Air Capture with CO2 Storage in Europe

Tom Terlouw, Daniel Pokras, Viola Becattini, Marco Mazzotti IN: Environmental Science & Technology, https://doi.org/10.1021/acs.est.3c10041

Here, a geospatial analysis of the techno-economic performance of large-scale DACCS deployment in Europe is presented using two performance indicators: CDR costs and potential. Different low-temperature heat DACCS configurations are considered, i.e., coupled to the national power grid, using waste heat and powered by curtailed electricity.

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Nature – Li et al. (2024): Capturing carbon dioxide from air with charged-sorbents

Huaiguang Li, Mary E. Zick, Teedhat Trisukhon, Matteo Signorile, Xinyu Liu, Helen Eastmond, Shivani Sharma, Tristan L. Spreng, Jack Taylor, Jamie W. Gittins, Cavan Farrow, S. Alexandra Lim, Valentina Crocellà, Phillip J. Milner, Alexander C. Forse IN: Nature, https://doi.org/10.1038/s41586-024-07449-2

In this work, the authors introduce a new class of designer sorbent materials known as ‘charged-sorbents’. These materials are prepared through a battery-like charging process that accumulates ions in the pores of low-cost activated carbons, with the inserted ions then serving as sites for carbon dioxide adsorption. They use our charging process to accumulate reactive hydroxide ions in the pores of a carbon electrode, and find that the resulting sorbent material can rapidly capture carbon dioxide from ambient air by means of (bi)carbonate formation. 

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Qiu et al. (2024): The role and deployment timing of direct air capture in Saudi Arabia’s net-zero transition

Yang Qiu, Gokul C Iyer, Jay Fuhrman, Mohamad I. Hejazi, Puneet Kamboj, Page Kyle IN: Environmental Research Letters, DOI: 10.1088/1748-9326/ad4a8f

The Kingdom of Saudi Arabia (KSA) has pledged to achieve net-zero greenhouse gas (GHG) emissions by 2060. Direct air carbon capture and storage (DACCS) is critical for the country to meet its net-zero target given its reliance on fossil fuels and limited options for carbon dioxide removal (CDR). However, the role of DACCS in KSA’s national climate change mitigation has not been studied in the literature. In this study, we aim to understand the potential role of DACCS and the effect of its deployment timing in KSA’s transition toward its net-zero target using GCAM-KSA, which is a version of Global Change Analysis Model (GCAM) with KSA split out as an individual region. 

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Edwards et al (2024): Modeling direct air carbon capture and storage in a 1.5 °C climate future using historical analogs

Morgan R. Edwards, Zachary H. Thomas, Gregory F. Nemet, Sagar Rathod, Jenna Greene, Kavita Surana, Kathleen M. Kennedy, Jay Fuhrman, Haewon C. McJeo IN: PNAS, https://doi.org/10.1073/pnas.2215679121

Here, the authors present an approach to model adoption of early-stage technologies such as CDR and apply it to direct air carbon capture and storage (DACCS). Our approach combines empirical data on historical technology analogs and early adoption indicators to model a range of feasible growth pathways. They use these pathways as inputs to an integrated assessment model (the Global Change Analysis Model, GCAM) and evaluate their effects under an emissions policy to limit end-of-century temperature change to 1.5 °C. Adoption varies widely across analogs, which share different strategic similarities with DACCS.

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