Reviewing direct air capture startups and emerging technologies

Wang, Eryu; Navik, Rahul; Miao, Yihe; Gao, Qi; Izikowitz, David; Chen, Lei; Li, Jia

doi:10.1016/j.xcrp.2024.101791

Cited by 6 publications

(2 citation statements)

References 127 publications

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“…Ryan Hanna et al demonstrated the significance of DAC through predictions of economic investment and carbon reduction benefits: if 1.5–1.9% of the global GDP is invested annually, up to 570–840 Gt of CO 2 can be captured from the atmosphere by DAC technology by 2100 . Eryu Wang et al emphasized that DAC technology, introduced by scientist Lackner in the 1990s, aims to reduce CO 2 emissions from nonpoint sources by interrupting the carbon cycle or permanently sequestering captured CO 2 , thereby stabilizing or further reducing atmospheric CO 2 concentrations . For the liquid-based direct air capture (L-DAC) method, the simplest and earliest absorbent material used is a solution .…”

Section: The Raw Materials Of E-fuelsmentioning

confidence: 99%

“…107 Eryu Wang et al emphasized that DAC technology, introduced by scientist Lackner in the 1990s, aims to reduce CO 2 emissions from nonpoint sources by interrupting the carbon cycle or permanently sequestering captured CO 2 , thereby stabilizing or further reducing atmospheric CO 2 concentrations. 108 For the liquid-based direct air capture (L-DAC) method, the simplest and earliest absorbent material used is a solution. 109 However, this method has significant drawbacks: the steps of drying and calcining CaCO 3 to release CO 2 greatly increase the energy consumption of the system.…”

Section: 21mentioning

confidence: 99%

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Perspectives and Outlook of E-fuels: Production, Cost Effectiveness, and Applications

Shi,

Guan,

Zhuang

et al. 2024

Energy Fuels

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With the introduction of the EU's "ban on combustion" proposal in 2035, the sale of new fossil fuel vehicles will soon be comprehensively prohibited. The use of e-fuels has become the best means for the survival and continuation of internal combustion engines, while also responding to the call for carbon neutrality. This review studies how the raw materials required for different e-fuels can be obtained through the assistance of renewable energy or various net-zero carbon emission routes, and elaborates on the synthesis methods, economics, and challenges faced by e-fuels such as e-methanol and e-ammonia. E-fuels have a wide range of market applications, including but not limited to road transportation, aviation, and shipping, and some transportation vehicles have already chosen e-fuels as their fuel. By summarizing the technoeconomic analysis of e-fuels, this review aims to provide referable methods and multiple options for the future large-scale production of e-fuels, as well as insights for the subsequent application and improvement of e-fuels.

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Section: The Raw Materials Of E-fuelsmentioning

confidence: 99%

Section: 21mentioning

confidence: 99%

Perspectives and Outlook of E-fuels: Production, Cost Effectiveness, and Applications

Shi,

Guan,

Zhuang

et al. 2024

Energy Fuels

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Influence of Dissolved Iron in Solution on MgO Hydroxylation and Carbonation

Weber,

Moseley,

Yuan

et al. 2024

J. Phys. Chem. C

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MgO (periclase) is a promising material for direct air capture of CO 2 using a mineral looping process, but it is unknown how impurities in the environment will affect the CO 2 uptake and hence process economics. Here, we investigated the effects of dissolved iron on the extents of MgO hydroxylation and subsequent carbonation reactions to determine if this has a beneficial or detrimental effect. On single-crystal MgO, dissolved iron prevented hydration of MgO to Mg(OH) 2 (brucite) and instead formed a shell of lepidocrocite (γ-FeOOH). This did not passivate the MgO as dissolution below the shell was observed. During hydroxylation of MgO powders in the presence of dissolved iron, formation of brucite containing Fe(II) was observed. In addition, formation of nanoscale iron oxides containing Fe(III) was observed using magnetometry and Mossbauer spectroscopy. Subsequent carbonation experiments showed increased carbonation of MgO hydroxylated in the presence of iron. Our results indicate that the presence of dissolved solute impurities during hydroxylation may be beneficial for carbonation of hydroxylated MgO.

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Porous Polyvinylamine Adsorbents with Low Temperature Regenerability for Direct Air Capture

Baker,

Muldoon,

Steckel

et al. 2024

ACS Appl. Polym. Mater.

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This study presents the transformation of a well recognized membrane material, poly(vinylamine), into a porous adsorbent tailored for direct air capture applications. A scalable synthesis method utilizing water as a solvent was developed to produce cross-linked porous polyvinylamine (PPVAm) sorbents. Stable CO 2 capture capacity of 1.3 mmol/g at 400 ppm of CO 2 was attained with good control over the amine functionality covalently bonded to the polymer backbone. Significantly, this sorbent demonstrated efficient low-temperature regeneration capabilities, thereby further enhancing its practical applicability for carbon capture processes.

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Reviewing direct air capture startups and emerging technologies

Cited by 6 publications

References 127 publications

Perspectives and Outlook of E-fuels: Production, Cost Effectiveness, and Applications

Perspectives and Outlook of E-fuels: Production, Cost Effectiveness, and Applications

Influence of Dissolved Iron in Solution on MgO Hydroxylation and Carbonation

Porous Polyvinylamine Adsorbents with Low Temperature Regenerability for Direct Air Capture

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