An evaluation of ex situ, industrial-scale, aqueous CO2 mineralization

Kelly, Kerry E.; Silcox, Geoffrey D.; Sarofim, Adel F.; Pershing, David W.

doi:10.1016/j.ijggc.2011.09.005

Cited by 41 publications

(31 citation statements)

References 31 publications

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“…In the last years, several studies have assessed the energy requirements associated to direct carbonation of minerals and industrial residues adopting the slurry-phase route (e.g., Huijgen et al, 2006b;Kelly et al, 2011;Kirchofer et al, 2012), while to our knowledge this evaluation for the thin-film route was performed only by Zingaretti et al, 2014. In the latter study, based on the results of lab-scale tests carried out on different types of industrial residues using pure CO2, a comparison of the energy requirements associated with both reaction routes was performed.…”

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confidence: 99%

Accelerated Carbonation of Steel Slags Using CO2 Diluted Sources: CO2 Uptakes and Energy Requirements

et al. 2016

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This work presents the results of carbonation experiments performed on Basic Oxygen Furnace (BOF) steel slag samples employing gas mixtures containing 40 and 10% CO2 vol. simulating the gaseous effluents of gasification and combustion processes respectively, as well as 100% CO2 for comparison purposes. Two routes were tested, the slurry-phase (L/S = 5 l/kg, T = 100°C and Ptot = 10 bar) and the thin-film (L/S = 0.3-0.4 l kg, T = 50°C and Ptot = 7-10 bar) routes. For each one, the CO2 uptake achieved as a function of the reaction time was analyzed and on this basis, the energy requirements associated with each carbonation route and gas mixture composition were estimated considering to store the CO2 emissions of a medium size natural gas fired power plant (20 MW). For the slurry-phase route, maximum CO2 uptakes ranged from around 8% at 10% CO2, to 21.1% (BOF-a) and 29.2% (BOF-b) at 40% CO2 and 32.5% (BOF-a) and 40.3% (BOF-b) at 100% CO2. For the thin-film route, maximum uptakes of 13% (BOF-c) and 19.5% (BOF-d) at 40% CO2, and 17.8% (BOF-c) and 20.2% (BOF-d) at 100% were attained. The energy requirements of the two analyzed process routes appeared to depend chiefly on the CO2 uptake of the slag. For both process route, the minimum overall energy requirements were found for the tests with 40% CO2 flows (i.e., 1400 − 1600 MJ / t CO for the slurry-phase and 2 2220 0 -/ 255 MJ t CO for the thin-film route).

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confidence: 99%

Accelerated Carbonation of Steel Slags Using CO2 Diluted Sources: CO2 Uptakes and Energy Requirements

et al. 2016

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“…The most recent comprehensive literature reviews on ex situ carbon dioxide mineralization were published by Kelly et al [109], Khoo et al [110], Sanna et al [9] and by the Zevenhoven group [8,12]. Prior to these, a number of reviews have been published by Lackner [111] and later by Huijgen and Comans [10,11] and by Stephens and Keith [13].…”

Section: Overview Of Recent Ex Situ Mineralization Researchmentioning

confidence: 99%

Mineralization of Carbon Dioxide: A Literature Review

et al. 2015

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Research on carbon capture and storage has been focused on CO 2 storage in geologic formations, with many potential risks. An alternative to conventional geologic storage is carbon mineralization, where CO 2 is reacted with metal cations to form carbonate minerals. Mineralization methods can be broadly divided into two categories: in situ and ex situ. In situ mineralization, or mineral trapping, is a component of underground geologic sequestration, in which a portion of the injected CO 2 reacts with alkaline rock present in the target formation to form solid carbonate species. In ex situ mineralization, the carbonation reaction occurs above ground, within a separate reactor or industrial process. This literature review is meant to provide an update on the current status of research on CO 2 mineralization.

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“…Various sources of alkalinity have been suggested for CO 2 sequestration purposes. For example, alkaline solid residues from different industries such as steel slag (Huijgen & Comans, 2005;Kelly et al, 2011), cement kiln dust (Huntzinger et al, 2009), and fly ashes (Back et al, 2008;Costa et al, 2007), have been identified as alkalinity sources. The quantity and distribution of these alkaline solid wastes is however limited on a global scale (Huijgen & Comans, 2005).…”

Section: Alkalinity Source For Conversion Of Co 2 To Carbonate Ionsmentioning

confidence: 99%