Low energy packed tower and caustic recovery for direct capture of CO2 from air

Mahmoudkhani, Maryam; Heidel, Kenton; Ferreira, João Cardoso; Keith, David W.; Cherry, Robert

doi:10.1016/j.egypro.2009.01.201

Cited by 68 publications

(44 citation statements)

References 6 publications

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“…Inopportunely, the worldwide energy needs have doubled the fossil fuel consumption in the last two decades, [1][2][3][4][5][6][7][8][9][10][11] as a result of the eminent economic growth and the enhanced quality of living in emerging countries, and thus provoking the manifest and amplified global carbon dioxide emission. The foreseen deployment of a relatively cleaner alternative energy sources, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Explicitly, point-source carbon capture and storage (CCS) can be regarded as a plausible solution sanctioning the sustainable use of fossil fuels in power, steel and cement production plants, while direct air capture (DAC) can address and remediate the CO 2 emissions from mobile-sources such as automobiles and airplanes. [1][2][3][4][5][6][7][8][9][10][11] Markedly, the DAC offers a great prospective to remotely capture the emitted CO 2 at a different distant location and time. It is to note that the CO 2 capture from air using the chemical adsorption technology has been deployed, for over seven decades, to maintain a safe level of CO 2 in confined spaces such as space shuttles and submarines, where access to fresh air is limited.…”

Section: Introductionmentioning

confidence: 99%

“…12,13 Nevertheless, the CO 2 concentrations and the associated CO 2 quantities to the DAC (400 ppm CO 2 , worldwide average of 54 kg/person/day) and to the point-source CCS (7-15% CO 2 , worldwide average of 38 kg/person/day) entail a relatively larger scale footprint and/or an excessive energy penalty than the requisites for the CO 2 capture in confined spaces (1-5 % CO 2 and 1 kg/person/day). [1][2][3][4][5][6][7][8][9][10][11] Perceptibly, the cost associated to the CO 2 capture in confined spaces is not a disturbing concern, as the compulsory objective is the effective removal of CO 2 and the subsequent procurement of the indispensable clean air. Noticeably, the low CO 2 concentration in air (400 ppm) and the compulsory low CO 2 level in confined spaces (< 0.5 %) position chemical adsorbents, such as aqueous alkylamine solutions and lithium hydroxide (LiOH) (80-120 kJ/mol), as the conventional benchmark materials, with a high CO 2 -selectivity even in the presence of water vapor, for the carbon capture in diluted CO 2 concentrations 8 Nevertheless, largescale widespread of the chemically driven separation approach is hampered by the prohibitive high-energy requirement for the CO 2 desorption/regeneration process.…”

Section: Introductionmentioning

confidence: 99%

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A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO₂ Removal and Air Capture Using Physisorption

et al. 2016

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CitationA fine-tuned fluorinated MOF addresses the needs for trace CO2 removal and air capture using physisorption. Just Accepted "Just Accepted" manuscripts have been peer-reviewed and accepted for publication. They are posted online prior to technical editing, formatting for publication and author proofing. The American Chemical Society provides "Just Accepted" as a free service to the research community to expedite the dissemination of scientific material as soon as possible after acceptance. "Just Accepted" manuscripts appear in full in PDF format accompanied by an HTML abstract. "Just Accepted" manuscripts have been fully peer reviewed, but should not be considered the official version of record. They are accessible to all readers and citable by the Digital Object Identifier (DOI®). "Just Accepted" is an optional service offered to authors. Therefore, the "Just Accepted" Web site may not include all articles that will be published in the journal. After a manuscript is technically edited and formatted, it will be removed from the "Just Accepted" Web site and published as an ASAP article. Note that technical editing may introduce minor changes to the manuscript text and/or graphics which could affect content, and all legal disclaimers and ethical guidelines that apply to the journal pertain. ACS cannot be held responsible for errors or consequences arising from the use of information contained in these "Just Accepted" manuscripts.A fine-tuned fluorinated MOF addresses the needs for trace CO 2 removal and air capture using physisorption. ABSTRACT:The development of functional solid-state materials for carbon capture at low carbon dioxide (CO 2 ) concentrations, namely from confined spaces (<0.5 %) and in particular from air (400 ppm), is of prime importance with respect to energy and environment sustainability. Herein, we report the deliberate construction of a hydrolytically stable fluorinated metal-organic framework (MOF), NbOFFIVE-1-Ni, with the appropriate pore system (size, shape and functionality), ideal for the effective and energyefficient traces carbon dioxide removal. Markedly, the CO 2 -selective NbOFFIVE-1-Ni exhibits the highest CO 2 gravimetric and volumetric uptake (ca. 1.3 mmol/g and 51.4 cm 3 (STP).cm -3 ) for a physical adsorbent at 400 ppm CO 2 and 298 K. Practically, the NbOFFIVE-1-Ni offers the complete CO 2 desorption at 328 K under vacuum with an associated moderate energy input of 54 kJ/mol, typical for the full CO 2 desorption in conventional physical adsorbents but considerably lower than chemical sorbents. Noticeably, the contracted square-like channels, affording the close proximity of the fluorine centers, permitted the enhancement of the CO 2 -framework interactions and subsequently the attainment of an unprecedented CO 2 -selectivity at very low CO 2 concentrations. The precise localization of the adsorbed CO 2 at the vicinity of the periodically aligned fluorine centers, promoting the selective adsorption of CO 2 , is evidenced by the single-crystal X-ray diffraction study on t...

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO₂ Removal and Air Capture Using Physisorption

et al. 2016

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“…In some cases, the sorbent is a liquid (21)(22)(23)(24)(25); in others, it is a solid (26)(27)(28). Most methods rely on batch processes that separate collection and regeneration.…”

Section: Current State Of Air Capture Technologymentioning

confidence: 99%

The urgency of the development of CO ₂ capture from ambient air

Lackner

Brennan

Matter

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

387

253

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CO 2 capture and storage (CCS) has the potential to develop into an important tool to address climate change. Given society’s present reliance on fossil fuels, widespread adoption of CCS appears indispensable for meeting stringent climate targets. We argue that for conventional CCS to become a successful climate mitigation technology—which by necessity has to operate on a large scale—it may need to be complemented with air capture, removing CO 2 directly from the atmosphere. Air capture of CO 2 could act as insurance against CO 2 leaking from storage and furthermore may provide an option for dealing with emissions from mobile dispersed sources such as automobiles and airplanes.

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“…한편, 산업적으로 널리 활용되고 있는 기체 흡수장치로는 bubble column [2], agitated vessel [3], packed tower [4] 등이 있으나, Gaddis [5]에 따르면 bubble column은 장치구조가 간단한 반면 다른 장치에 비해 물질전달율이 낮은 특징이 있고, agitated vessel은 임펠러의 교반에 따른 높은 난류강도로 인해 물질전달율이 높지만 임펠러의 작동에 † To whom correspondence should be addressed. E-mail: leejk@pknu.ac.kr This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.…”

Section: 서 론unclassified

Neutralization of Alkaline Wastewater with CO₂in a Continuous Flow Jet Loop Reactor

Kang¹,

Kim²,

Lim³

et al. 2016

Korean Chemical Engineering Research

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요 약본 연구에서는 CO 2 를 이용한 알칼리폐수의 중화처리 시 jet loop reactor의 적용가능성을 검토하고자 하였다. 이를 위해 연속식 jet loop reactor에서 pH=10.1인 알칼리 폐수의 유입유량(Q L,in =0.9~6.6 L/min)과 유입가스유량(Q G,in =1~6 L/min)을 변화시키면서 유출수의 pH 변화 및 CO 2 제거특성을 살펴보았다. 중화반응 후 유출수의 pH는 Q L,in /Q G,in 비가 1.1일 때는 Q G,in 및 Q L,in 이 증가하여도 pH가 7.2 정도로 일정하게 유지되었다. 그러나 Q L,in /Q G,in 비가 1.1 이상에서는 Q L,in /Q G,in 비 가 증가할수록 CO 2 제거효율 및 배출수의 pH가 증가하는 경향을 보였다. 본 연구범위에서 얻어진 최대 CO 2 제거효율은 98.06%로 Q G,in =2 L/min, Q L,in =4 L/min인 조건이었으며, 이때의 유출수 pH는 8.43 이었다.Abstract − This paper investigates the feasibility of applying the jet loop reactor for the neutralization of alkaline wastewater using carbon dioxide (CO 2 ). In this study, pH changes and CO 2 removal characteristics were examined by changing influent flow rate of alkaline wastewater (initial pH=10.1) and influent CO 2 flow rates. Influent flow rates of alkaline wastewater (Q L,in ) ranged between 0.9 and 6.6 L/min, and inlet gas flow rate (Q G,in ) of 1 and 6 L/min in a lab-scale continuous flow jet loop reactor. The outlet pH of wastewater was maintained at 7.2 when the ratio (Q L,in /Q G,in ) of Q L,in and Q G,in was 1.1. However, the CO 2 removal efficiency and the outlet pH of wastewater were increased when Q L,in /Q G,in ratio was higher than 1.1. Throughout the experiments, the maximum CO 2 removal efficiency and the outlet pH of wastewater were 98.06% and 8.43 at the condition when Q G,in and Q L,in were 2 L/min and 4 L/min, respectively.

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Low energy packed tower and caustic recovery for direct capture of CO2 from air

Cited by 68 publications

References 6 publications

A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO₂ Removal and Air Capture Using Physisorption

A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO₂ Removal and Air Capture Using Physisorption

The urgency of the development of CO ₂ capture from ambient air

Neutralization of Alkaline Wastewater with CO₂in a Continuous Flow Jet Loop Reactor

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Low energy packed tower and caustic recovery for direct capture of CO2 from air

Cited by 68 publications

References 6 publications

A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO2 Removal and Air Capture Using Physisorption

A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO2 Removal and Air Capture Using Physisorption

The urgency of the development of CO 2 capture from ambient air

Neutralization of Alkaline Wastewater with CO2in a Continuous Flow Jet Loop Reactor

Contact Info

Product

Resources

About

A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO₂ Removal and Air Capture Using Physisorption

A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO₂ Removal and Air Capture Using Physisorption

The urgency of the development of CO ₂ capture from ambient air

Neutralization of Alkaline Wastewater with CO₂in a Continuous Flow Jet Loop Reactor