Effects of coexistent gaseous components and fine particles in the flue gas on CO2 separation by flat-sheet polysulfone membranes

Wang, Xia; Chen, Hao; Zhang, Lin; Yu, Ran; Qu, Rumin; Yang, Linjun

doi:10.1016/j.memsci.2014.07.040

Cited by 40 publications

(19 citation statements)

References 34 publications

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“…The properties of the membrane depend on the material, the structure and thickness, the configuration and the module and system design, which involve the existence of many variables that have to be studied. The common materials for CO2 separating membranes are organic polymers, such as polysulfone (Ps), polyimide (PA), poly(ethylene oxide) and polycarbonate (PC) (Luis et al, 2012;Wang et al, 2014). In the present work, polysulfone (Ps) was chosen because it is a well characterized polymer (Scholes et al, 2010).…”

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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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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“…In order to simulating the actual conditions of power plant, the effect of RH on the adhesion force between particles was studied. Generally, the humidity could affect the deposition state of fly-ash particles and the formation of cake-layer 18 , 29 – 31 because RH mainly influences the moisture content and the adhesivity of fly-ash. When RH increased, the moisture content and the adhesivity of the fly-ash increased due to the adsorption of water molecule, which cause fly-ash -particles tend to adhered to each other 47 , 48 .…”

Section: Resultsmentioning

confidence: 99%

“…And the surface of membrane was covered by fine particles totally and the microstructure was damaged significantly. In our previous lab work, it was also found that the fine particles in flue gas obviously decreased the performance and damaged the mirco-structure of membrane during CO 2 capture process 29 – 31 . Particle induced membrane fouling is closely related to the adhesion force of aerogel.…”

Section: Introductionmentioning

confidence: 92%

Colloidal Force Study of Particle Fouling on Gas Capture Membrane

Zhang

Song

et al. 2017

Sci Rep

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Membrane fouling induced by industrial flue gas deteriorates their gas capturing efficiency, which is mainly caused by the adhesion of aerosol particles. To fully understand the mechanism of membrane fouling, a quantitative study of the adhesion force of particle on membrane surface was investigated by atomic force microscopy (AFM). The adhesion force of a single particle with flat glass, silicon wafer, PP (polypropylene) membrane, and fly-ash particles were measured within the relative humidity (RH) of 0 ~ 85%. The results showed the adhesion force of a particle with membrane have not much difference from the glass and silica wafer. And the surface roughness of flat substrate has slight effect on the adhesion force of the micrometer scale particle on flat surface at dry condition, while measured adhesion forces show obvious RH dependent for glass and membrane. Additionally, at dry conditions, the adhesion force of inter-particles also shows no obvious quantitative difference but obvious scattering comparing to that on membrane. The adhesion force of inter-particles increased more higher with the RH than that on membrane, which indicates the adhesion between micrometer scale particles can accelerate the deposition of particles on membrane and contributes the most to membrane fouling in industry atmosphere.

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“…Figure also shows that the increase of u f will enrich the CO 2 concentration of the permeated gas. The reason is that a higher gas flow rate could weaken the concentration polarization phenomena on the surface of the membrane, which will have a favourable impact on gas permeability and the selectivity of the membrane.…”

Section: Resultsmentioning

confidence: 99%

Experimental study on hybrid MS‐CA system for post‐combustion CO₂ capture

Jiang

Zhang

et al. 2017

Greenhouse Gases

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A lab‐scale hybrid membrane separation‐chemical absorption (MS‐CA) system for a post‐combustion process was implemented by combining a hollow‐fibre membrane module and a packed column in series. A solution‐diffusion model and double‐film theory were adopted to investigate the mass‐transfer performance of membrane separation and the chemical absorption process. To determine optimal operational conditions, experiments were conducted to investigate the mass transfer characteristics and CO2 removal of both mono‐staged systems. A hybrid MS‐CA method was studied to measure coupling characteristics and CO2 removal performance of the system. It was found that increasing the pressure and the temperature of the feed gas enhanced the CO2 diffusion property of the membrane module. For a packed column, mass transfer and carbon capture is affected by the liquid‐to‐gas ratio; TMEA = 40°C is considered the optimal condition. For a hybrid MS‐CA system, the optimal CO2 removal efficiency can reach 99.49% at the condition of Pf = 1 MPa, wMEA = 10 wt%. Improving the feed‐gas pressure will increase the CO2 absorption rate of the overall hybrid system. Compared with the mono‐staged method, the hybrid MS‐CA system has a higher stability and efficiency for the post‐combustion process, especially at a relatively low feed‐gas pressure. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Effects of coexistent gaseous components and fine particles in the flue gas on CO2 separation by flat-sheet polysulfone membranes

Cited by 40 publications

References 34 publications

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

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

Colloidal Force Study of Particle Fouling on Gas Capture Membrane

Experimental study on hybrid MS‐CA system for post‐combustion CO₂ capture

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Effects of coexistent gaseous components and fine particles in the flue gas on CO2 separation by flat-sheet polysulfone membranes

Cited by 40 publications

References 34 publications

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

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

Colloidal Force Study of Particle Fouling on Gas Capture Membrane

Experimental study on hybrid MS‐CA system for post‐combustion CO2 capture

Contact Info

Product

Resources

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Experimental study on hybrid MS‐CA system for post‐combustion CO₂ capture