A climate-optimal supply chain for CO2 capture, utilization, and storage by mineralization

Ostovari, Hesam; Müller, Leonard Jan; Mayer, Fabian; Bardow, André

doi:10.1016/j.jclepro.2022.131750

Cited by 39 publications

(24 citation statements)

References 64 publications

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“…We also scaled up this process in a 20 L reactor, and the results were comparable to those of the 300 mL scale, and further development is required to improve the quality of the products. Furthermore, we plan to reuse and recycle the liquid used in the dissolution and carbonation process, and the salts will be concentrated by multiple cycles, which can be precipitated by adding ethanol or implementing electrolysis to get the required acid and base. − In future, we will optimize the integrated process to get a more sustainable and cost-effective process by applying life cycle assessment (LCA) and technoeconomic assessment (TEA) . According to our preliminary results of TEA, it shows that the cost of acid and base supply and the revenue from products are the most critical factors, and we will conduct a detailed assessment to carry out the sensitivity analysis of various effects on the CO 2 emissions and CO 2 avoidance cost.…”

Section: Discussionmentioning

confidence: 99%

Upcycling Construction and Demolition Waste into Calcium Carbonates: Characterization of Leaching Kinetics and Carbon Mineralization Conditions

Zhang

Moment

2023

ACS Sustainable Chem. Eng.

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Carbon mineralization is a technology that fixes CO2 permanently into solid carbonates via the reaction between CO2 and alkaline substances. In our studies, we used Ca-bearing industrial waste (i.e., construction and demolition waste) as the feedstock to produce high-purity calcium carbonates. We aim to integrate valorization of solid wastes and CO2 emission mitigation in our process. To achieve qualified products and fast kinetics, the reaction routes can be divided into two main processes: a dissolution process with acid followed by a two-step carbonation reaction. The advantages of this multistage process are obtaining products with high purity, tailored morphology, and narrowed particle size distribution. Conducting effective carbon mineralization requires a comprehensive understanding of the kinetics of the dissolution process, and it was found that the rate-limiting step is diffusion due to the intrinsic properties of the feedstock. In the subsequent carbonation process, impurities (Al, Fe, and Si) from the leachate were selectively removed as their oxides prior to the carbonation reaction, through pH swing, leveraging differential solubilities. Subsequent carbonation with bubbled CO2 under controlled conditions produced calcium carbonate with tunable forms between vaterite, aragonite, and calcite. The variations of the particle size distribution and the shape of the solid were monitored in real time through a Blaze900 probe from BlazeMetrics Co., which provided optical information, facilitating a better understanding of the kinetics and mechanisms of the dissolution and crystallization processes. Thus, alkaline industrial waste can be efficiently and sustainably utilized through the carbon mineralization pathway.

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Section: Discussionmentioning

confidence: 99%

Upcycling Construction and Demolition Waste into Calcium Carbonates: Characterization of Leaching Kinetics and Carbon Mineralization Conditions

Zhang

Moment

2023

ACS Sustainable Chem. Eng.

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“…Finally, alternative CDR pathways have also started to be proposed, e.g. CO2 mineralisation or biochar in the cement industry [19][20][21] , with some being at demonstration or even commercialization stage 22,23 . However, their technical feasibility and regional/global scale-up potential are still scarcely assessed 24,25 .…”

Section: Broader Contextmentioning

confidence: 99%

A comparative analysis of the efficiency, timing, and permanence of CO₂ removal pathways

Chiquier

Patrizio

Bui

et al. 2022

Energy Environ. Sci.

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“…Because of the footprint of a large-scale mineral carbonation plant, its location within a close distance of the cement plant needs consideration, and CO 2 from the cement process then requires transportation via pipeline. The feedstock availability has recently been analyzed in our work on supply-chain optimization for mineral carbonation, which discusses potential locations of the mineral carbonation plants …”

Section: Process Optimizationmentioning

confidence: 99%

“…Next to olivine, serpentine is a potential natural feedstock material. We conducted supply chain optimization for matching industrial CO 2 sources to potential carbonation feedstocks (olivine and serpentine) within Europe and concluded that opening new mines is necessary for a substantial reduction of CO 2 emissions …”

Section: Introductionmentioning

confidence: 99%

Direct Olivine Carbonation: Optimal Process Design for a Low-Emission and Cost-Efficient Cement Production

Bremen

Strunge

Ostovari

et al. 2022

Ind. Eng. Chem. Res.

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Employing mineral carbonation products as a cementitious substitute could reduce the cement industry’s greenhouse gas (GHG) emissions. However, a transition toward low-emission cement requires financially competitive cement production at standardized product specifications. Aiming to tackle this challenge, we modeled and optimized a direct mineral carbonation process. In detail, we embedded a mechanistic tubular reactor model in a mineral carbonation process and imposed product specifications based on the European cement standard in the optimal design formulation. In the next step, we considered the business case of blended cement consisting of ordinary Portland cement and the mineral carbonation product that could be categorized as CEM II in the European cement standard. We computed the minimum production cost and GHG emissions of the produced blended cement by using Bayesian optimization to find Pareto optimal operating conditions of the mineral carbonation process. Our results showed that the cost of mineral carbonation in the cement industry can be competitive while cutting the GHG emissions by up to 54%.

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A climate-optimal supply chain for CO2 capture, utilization, and storage by mineralization

Cited by 39 publications

References 64 publications

Upcycling Construction and Demolition Waste into Calcium Carbonates: Characterization of Leaching Kinetics and Carbon Mineralization Conditions

Upcycling Construction and Demolition Waste into Calcium Carbonates: Characterization of Leaching Kinetics and Carbon Mineralization Conditions

A comparative analysis of the efficiency, timing, and permanence of CO₂ removal pathways

Direct Olivine Carbonation: Optimal Process Design for a Low-Emission and Cost-Efficient Cement Production

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A climate-optimal supply chain for CO2 capture, utilization, and storage by mineralization

Cited by 39 publications

References 64 publications

Upcycling Construction and Demolition Waste into Calcium Carbonates: Characterization of Leaching Kinetics and Carbon Mineralization Conditions

Upcycling Construction and Demolition Waste into Calcium Carbonates: Characterization of Leaching Kinetics and Carbon Mineralization Conditions

A comparative analysis of the efficiency, timing, and permanence of CO2 removal pathways

Direct Olivine Carbonation: Optimal Process Design for a Low-Emission and Cost-Efficient Cement Production

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Product

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A comparative analysis of the efficiency, timing, and permanence of CO₂ removal pathways