Experimental comparison of regeneration methods for CO2 concentration from air using amine-based adsorbent

Elfving, Jere; Kauppinen, Juho; Jegoroff, Mikko; Ruuskanen, Vesa; Järvinen, Lauri; Sainio, Tuomo

doi:10.1016/j.cej.2020.126337

Cited by 79 publications

(45 citation statements)

References 47 publications

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“…For amine-functionalized sorbents, values similar to those reported by Fasihi et al [53], Elfving et al [106], and Wijesiri et al [3] are obtained: 1884 kWh th /tonneCO 2 for the silica gel-based sorbent and 1427 kWh th /tonneCO 2 for the cellulose-based sorbent.…”

Section: Kpis: Energy Consumption and Cost Of Dac Systemssupporting

confidence: 85%

A Comparative Study of Different Sorbents in the Context of Direct Air Capture (DAC): Evaluation of Key Performance Indicators and Comparisons

2022

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Direct air capture can be based on an adsorption system, and the used sorbent (chemisorbents or physisorbents) influences process. In this work, two amine-functionalized sorbents, as chemisorbents, and three different metal organic frameworks, as physisorbents, are considered and compared in terms of some key performance indicators. This was carried out by developing a mathematical model describing the adsorption and desorption stages. An independent analysis was carried out in order to verify data reported in the literature. Results show that the equilibrium loading is a critical parameter for adsorption capacity, energy consumption, and cost. The considered metal organic frameworks are characterized by a lower equilibrium loading (10−4 mol/kg) compared to chemisorbents (10−1 mol/kg). For this reason, physisorbents have higher overall energy consumptions and costs, while capturing a lower amount of carbon dioxide. A reasonable agreement is found on the basis of the operating conditions of the Climeworks company, modelling the use of the same amine cellulose-based sorbent. The same order of magnitude is found for total costs (751 USD/tonneCO2 for our analysis, compared to the value of 600 USD/tonneCO2 proposed by this company).

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Section: Kpis: Energy Consumption and Cost Of Dac Systemssupporting

confidence: 85%

A Comparative Study of Different Sorbents in the Context of Direct Air Capture (DAC): Evaluation of Key Performance Indicators and Comparisons

2022

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“…287,297 Such an approach can provide unrealistically optimistic results (unless low-concentration CO 2 output streams are of interest). 298 The combination of temperature and vacuum swing desorption (TVSD) can be used in practice to produce high purity CO 2 following DAC, 295 and is employed in the Climeworks technology (Fig. 15).…”

Section: Reviewmentioning

confidence: 99%

Direct air capture: process technology, techno-economic and socio-political challenges

Erans

Sanz-Pérez

Hanak

et al. 2022

Energy Environ. Sci.

291

169

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“…The CO 2 -loaded amine solution is then heated up (to 100-140 • C) to release CO 2 and regenerate the amine solution simultaneously [207]. This method enables the production of high-purity CO 2 (>99%) [208][209][210], which makes it the most promising CO 2 capture technology for integrating with HOB-MP process. However, to produce the low-cost 2nd generation MP, only CO 2 absorption from biogas and DAC seems realistic.…”

Section: Carbon Dioxide Capture Technologymentioning

confidence: 99%

From renewable energy to sustainable protein sources: Advancement, challenges, and future roadmaps

Khoshnevisan

et al. 2022

Renewable and Sustainable Energy Reviews

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Experimental comparison of regeneration methods for CO2 concentration from air using amine-based adsorbent

Cited by 79 publications

References 47 publications

A Comparative Study of Different Sorbents in the Context of Direct Air Capture (DAC): Evaluation of Key Performance Indicators and Comparisons

A Comparative Study of Different Sorbents in the Context of Direct Air Capture (DAC): Evaluation of Key Performance Indicators and Comparisons

Direct air capture: process technology, techno-economic and socio-political challenges

From renewable energy to sustainable protein sources: Advancement, challenges, and future roadmaps

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