Quantification of the CO2 mineralization potential of ironmaking and steelmaking slags under direct gas-solid reactions in flue gas

Myers, Corey; Nakagaki, Takao; Akutsu, Kosei

doi:10.1016/j.ijggc.2019.05.021

Cited by 52 publications

(21 citation statements)

References 60 publications

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“…It can also be applied in a large‐scale industry rapidly and inexpensively, without disrupting other processes. Finally, the carbonates from byproducts can be used as valuable products in other industries, such as textile and plastic industries 30 . Moreover, carbonates are the raw primary substance for construction materials 31 .…”

Section: Introductionmentioning

confidence: 99%

Investigation and development of the multicycle of CO₂ mineralization with wastewater under standard conditions

Thamsiriprideeporn

Suekane

2021

Greenhouse Gases

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CO2 mineralization is promising for carbon capture and storage (CCS). The multiple reuses of monoethanolamine (MEA) as absorbents for CO2 absorption and carbonate generation with minerals in wastewater between 20 and 25°C at atmospheric pressure (standard conditions) efficiently reduce both cost and energy penalties for industrial application. In this study, the multicycle of CO2 mineralization was performed in three steps: absorption, precipitation, and regeneration. We found that 5 wt.% MEA solution has great potential in terms of 24.26 moles of CO2 absorbing capacity per mole of MEA and 0.1535 moles of carbonate conversion per mole of MEA within less than 1.8 h operation time, which the optimal repetitions was 5‐cycle before MEA complete degradation. To reduce absorption time, we studied packing bed of 2‐, 4‐, 6‐, and 8 mm diameter nonreactive spherical glass beads were operated in the columns with 5 wt.% MEA solutions. The maximum benefit was obtained from the 8‐mm‐packing diameter, which fully accorded 28.85 and 0.1687 moles of CO2 and carbonate, respectively, per mole of 5 wt.% MEA within 44 min, providing the highest conversion in a relatively short time. The efficiency of regenerated MEA absorbent was reduced from 20 to 10% due to degradation. Raman spectroscopy, X‐ray diffractometry, and scanning electron microscopy were used to analyze the composition and crystal structure of carbonates. The main product of carbonates was calcite, which was mixed with complex salts, such as aragonite, magnesite, and dolomite. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Investigation and development of the multicycle of CO₂ mineralization with wastewater under standard conditions

Thamsiriprideeporn

Suekane

2021

Greenhouse Gases

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“…In the case of BBA the reactor pressure course indicated ongoing CO 2 uptake even after 168 hr. Ongoing slow carbonation beyond 168 hr may be associated the relatively high diffusion resistance exhibited by various alkaline earth compounds, especially in their amorphous forms 42 …”

Section: Resultsmentioning

confidence: 99%

Technically exploitable mineral carbonation potential of four alkaline waste materials and effects on contaminant mobility

et al. 2021

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Mineral carbonation of alkaline wastes can contribute to the sequestration of carbon dioxide (CO2). In this study we examined the CO2 sequestration potential of four dry‐discharged waste materials using theoretical and experimental approaches. The materials encompassed biomass bottom ash, biomass fly ash, refuse‐derived fuel fly ash, and stainless‐steel slag. Their CO2 sequestration potential was determined from the acid neutralization capacity (ANC) and alternatively from the elemental composition using the Steinour equation (StE). Results were compared to experimental data from batch carbonation tests performed with pure CO2 at near atmospheric pressure over 7 days. Influence of water content on the CO2 uptake was determined in short‐term carbonation tests over 2 hr. Effects related to the hydration and the subsequent carbonation were investigated by thermogravimetric analysis and leaching tests. Depending on the material the experimental CO2 uptakes ranged from 0.99 to 2.54 mol kg−1. The ANC‐based approach either under‐ or overestimated the experimental CO2 uptake and the StE strongly overestimated the experimental CO2 uptake throughout. Except for biomass fly ash the experimental CO2 uptake within a test period of 2 hr depended on the moisture content. Upon carbonation the leachate pH decreased and amphoteric trace elements tended to be immobilized. In contrast to this, the mobility of oxyanions increased by two orders of magnitude. Our results suggest that for the design of CO2 sequestration strategies experimental investigations of the CO2 uptake are preferable to indirect estimates. When using waste materials for CO2 sequestration, effects on contaminant mobility must be considered since these determine disposal costs. © 2021 The Authors. Greenhouse Gases: Science and Technology published by Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…According to Equation ( 17), using pure CO 2 rather than ambient air increases the reaction rate by 3 orders of magnitude whereas grinding from 10 mm to 10 µm increases mineralization rates by 6 orders of magnitude. Values of D for relevant minerals can vary across 7 orders of magnitude depending on the mineral composition and structure (Myers et al, 2019). Other kinetic enhancements are possible for gas-solid processes.…”

Section: Gas-solid Kineticsmentioning

confidence: 99%

Geochemical Negative Emissions Technologies: Part I. Review

et al. 2022

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Over the previous two decades, a diverse array of geochemical negative emissions technologies (NETs) have been proposed, which use alkaline minerals for removing and permanently storing atmospheric carbon dioxide (CO2). Geochemical NETs include CO2 mineralization (methods which react alkaline minerals with CO2, producing solid carbonate minerals), enhanced weathering (dispersing alkaline minerals in the environment for CO2 drawdown) and ocean alkalinity enhancement (manipulation of ocean chemistry to remove CO2 from air as dissolved inorganic carbon). CO2 mineralization approaches include in situ (CO2 reacts with alkaline minerals in the Earth's subsurface), surficial (high surface area alkaline minerals found at the Earth's surface are reacted with air or CO2-bearing fluids), and ex situ (high surface area alkaline minerals are transported to sites of concentrated CO2 production). Geochemical NETS may also include an approach to direct air capture (DAC) that harnesses surficial mineralization reactions to remove CO2 from air, and produce concentrated CO2. Overall, these technologies are at an early stage of development with just a few subjected to field trials. In Part I of this work we have reviewed the current state of geochemical NETs, highlighting key features (mineral resources; processes; kinetics; storage durability; synergies with other NETs such as DAC, risks; limitations; co-benefits, environmental impacts and life-cycle assessment). The role of organisms and biological mechanisms in enhancing geochemical NETs is also explored. In Part II, a roadmap is presented to help catalyze the research, development, and deployment of geochemical NETs at the gigaton scale over the coming decades.

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Quantification of the CO2 mineralization potential of ironmaking and steelmaking slags under direct gas-solid reactions in flue gas

Cited by 52 publications

References 60 publications

Investigation and development of the multicycle of CO₂ mineralization with wastewater under standard conditions

Investigation and development of the multicycle of CO₂ mineralization with wastewater under standard conditions

Technically exploitable mineral carbonation potential of four alkaline waste materials and effects on contaminant mobility

Geochemical Negative Emissions Technologies: Part I. Review

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Quantification of the CO2 mineralization potential of ironmaking and steelmaking slags under direct gas-solid reactions in flue gas

Cited by 52 publications

References 60 publications

Investigation and development of the multicycle of CO2 mineralization with wastewater under standard conditions

Investigation and development of the multicycle of CO2 mineralization with wastewater under standard conditions

Technically exploitable mineral carbonation potential of four alkaline waste materials and effects on contaminant mobility

Geochemical Negative Emissions Technologies: Part I. Review

Contact Info

Product

Resources

About

Investigation and development of the multicycle of CO₂ mineralization with wastewater under standard conditions

Investigation and development of the multicycle of CO₂ mineralization with wastewater under standard conditions