CO2 facilitated transport membrane promoted by mimic enzyme

Saeed, Muhammad; Deng, Liyuan

doi:10.1016/j.memsci.2015.07.028

Cited by 56 publications

(39 citation statements)

References 27 publications

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“…However, most polymeric membranes are subjected to a trade-off between permeability and selectivity; polymers that are highly permeable are usually low-selective and vice versa. The Robeson upper bound is a physical threshold describing this trade-off relationship (Robeson, 2008(Robeson, , 1991 and solutions to overcome it are presented by Brunetti et al (Brunetti et al, 2010) A promising approach is so-called facilitated transport (Deng, 2009;Deng et al, 2009;Kim et al, 2004;Saeed and Deng, 2015). As an example, the amino groups in the PVAm/PVA membrane of Deng (Deng, 2009) catalyze the conversion of CO 2 to HCO 3 − /CO 3 2in the membrane.…”

Section: Introductionmentioning

confidence: 99%

PVA/nanocellulose nanocomposite membranes for CO2 separation from flue gas

Torstensen

Helberg

Deng

et al. 2019

International Journal of Greenhouse Gas Control

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In this paper, we explore the use of nanocelluloses as an additive to poly (vinyl alcohol) (PVA) nanocomposite membranes for CO 2 /N 2 mixed-gas separation. Our findings are that several types of nanocellulose can be used to improve membrane performance. PVA/cellulose nanocrystals (CNC) nanocomposite membranes have the most promising performance, with increased CO 2 permeance (127.8 ± 5.5 GPU) and increased CO 2 /N 2 separation factor (39 ± 0.4) compared to PVA composite membranes, with permeance 105.5 ± 1.9 GPU and separation factor 36 ± 0.5. The performance of PVA/CNC membranes is similar compared to PVA/carbon nanotubes (CNTs) membranes shown earlier. Thus, CNTs can be replaced by CNC that is biodegradable and non-toxic. Investigating several different nanocellulose types reveal that a high nanocellulose charge and small nano-cellulose particles are important nanocellulose traits that improve membrane performance.

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Section: Introductionmentioning

confidence: 99%

PVA/nanocellulose nanocomposite membranes for CO2 separation from flue gas

Torstensen

Helberg

Deng

et al. 2019

International Journal of Greenhouse Gas Control

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“…Climate change resulting from the presence of greenhouse gases is becoming a serious issue of the present century (Ahn et al, 2013). Over 80% of energy needs worldwide are nowadays supplied by fossil fuels (Korminouri et al, 2014) where combustion in power plants is the largest point source contributor to CO2 emissions (Saeed and Deng, 2015;Mansourizadeh et al, 2014;Mansourizadeh and Ismail, 2011). The CO2 capture and sequestration (CCS) is a concern globally today to reduce the impact on the atmosphere and protect humans against the risks associated with CO2 pollution (Boot-Handford et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Carbon dioxide capture by [emim][Ac] ionic liquid in a polysulfone hollow fiber membrane contactor

Gómez‐Coma

Garea

Irabien

2016

International Journal of Greenhouse Gas Control

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CO2 emissions have to be controlled and reduced in order to avoid greenhouse effect. This work reports an analysis of the efficiency of CO2 separation using a hollow fiber membrane contactor and an ionic liquid. This process configuration contributes to the process intensification approach in the field of CO2 capture and storage. In this study, the ionic liquid 1-ethyl-3-methylimidazolium acetate, [emim][Ac], was used as absorbent due to its high solubility. The module selected was polysulfone (Ps) because it is a well characterized polymer that allows to operate at moderate temperatures. Results were compared to previous studies with a polypropylene module. The gas stream flowed through the inside of the hollow fibers. The CO2 removal efficiency was obtained from experimental data, showing a temperature dependence: from 30 to 45.0 %, corresponding to 291 K and 348 K respectively, when the Ps contactor was used. The overall mass transfer coefficient Koverall has also been evaluated. In addition, a numerical analysis was carried out to study the performance of the membrane contactor for the CO2 capture in order to estimate the process conditions to accomplish 90% CO2 capture as a target to be competitive with the conventional absorption process.

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“…In the circumstance of a large size membrane module, the effects of other factors associated to feed gas composition could be remarkable. As indicated by experimental studies, water vapor in the gas stream can benefit the facilitated transport of CO 2 in AFTMs 22–25 . For a large size membrane system, when a feed gas stream passes through a large membrane module, water vapor content in the gas stream declines along with the streamflow in the module.…”

Section: Introductionmentioning

confidence: 98%

“…As indicated by experimental studies, water vapor in the gas stream can benefit the facilitated transport of CO 2 in AFTMs. [22][23][24][25] For a large size membrane system, when a feed gas stream passes through a large membrane module, water vapor content in the gas stream declines along with the streamflow in the module. This happens as a direct consequence of water permeation, resulting in reduced separation performance of AFTMs along with the module.…”

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confidence: 99%

Water vapor effects on CO₂ separation of amine‐containing facilitated transport membranes (AFTMs) module: mathematical modeling using tanks‐in‐series approach

et al. 2020

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Amine-containing facilitated transport membranes (AFTMs) are emerging membranes and have great potential for CO 2 capture. AFTMs are particularly suitable for humid flue gases, as water vapor enhances the facilitated transportation of CO 2. However, there is a lack of mathematical models available to evaluate the impact of water vapor on CO 2 separation performance for large-scale membrane modules. Therefore, developing a mathematical model considering the water vapor effects is of great importance to guide the large-scale applications of AFTMs for CO 2 capture. In this study, a mathematical model using tanks-in-series approach for CO 2 capture through AFTMs is proposed. In this model, the tanks-in-series approach can reflect the variable (water vapor-dependent) gas permeance along the membrane module. Modeling results showed the necessity of considering the effect of water vapor content decline along the module. In addition, both increasing temperature and pressure primarily lead to a faster decline of relative humidity (RH) along the membrane module, resulting in an increase of CO 2 recovery but a decrease of CO 2 product purity. For a gas stream with relatively low water vapor content (<2% in this study), different H 2 O permeance has a minor effect on separation performance. Moreover, permeate gas with higher water vapor content as well as higher RH is considered more suitable for further treatment of second stage membrane separation. In conclusion,

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CO2 facilitated transport membrane promoted by mimic enzyme

Cited by 56 publications

References 27 publications

PVA/nanocellulose nanocomposite membranes for CO2 separation from flue gas

PVA/nanocellulose nanocomposite membranes for CO2 separation from flue gas

Carbon dioxide capture by [emim][Ac] ionic liquid in a polysulfone hollow fiber membrane contactor

Water vapor effects on CO₂ separation of amine‐containing facilitated transport membranes (AFTMs) module: mathematical modeling using tanks‐in‐series approach

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CO2 facilitated transport membrane promoted by mimic enzyme

Cited by 56 publications

References 27 publications

PVA/nanocellulose nanocomposite membranes for CO2 separation from flue gas

PVA/nanocellulose nanocomposite membranes for CO2 separation from flue gas

Carbon dioxide capture by [emim][Ac] ionic liquid in a polysulfone hollow fiber membrane contactor

Water vapor effects on CO2 separation of amine‐containing facilitated transport membranes (AFTMs) module: mathematical modeling using tanks‐in‐series approach

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Water vapor effects on CO₂ separation of amine‐containing facilitated transport membranes (AFTMs) module: mathematical modeling using tanks‐in‐series approach