Absorption of CO2 from flue gas under oscillating gas flow conditions in gas-solvent hollow fibre membrane contactors

Hosseini, Elaheh; Miandoab, Ehsan Soroodan; Stevens, Geoffrey W.; Scholes, Colin A.

doi:10.1016/j.seppur.2020.117151

Cited by 11 publications

(13 citation statements)

References 30 publications

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“…The morphological and physicochemical characterization of the CaCO 3 samples shows that the synthesis parameters can control the structure and size of the synthesized particles via the multiple factors that take place during synthesis, mainly the instantaneous concentrations of Ca 2+ and CO 2 that control the carbonation reaction. This generic observation is further supported by several published data, in which the Ca 2+ consumption rate has been recognized to affect drastically the transition of one crystal state to another and the final formulation of lattices, regardless of the specific reactor/precipitator’s principles of operation (i.e., packed bed reactor; e.g., Murnandari et al [ 15 ], membrane contactor/precipitator; e.g., Hosseini et al [ 39 ], Jia et al [ 40 ], etc.). In the current study, variations in the initial main reactant concentration, Ca 2+ , were not sought by using a broad range of the initial concentration in the solution but by employing the two operating possibilities offered by the hollow fiber porous membrane concept, that is, contactor and bubbling mode, in which “hot spots” of different degree of Ca 2+ local excess appear.…”

Section: Discussionsupporting

confidence: 64%

“…To overcome poor control of precipitated calcium carbonate morphological characteristics, membrane-based bubbling reactor concept could be expanded to smaller membrane pore sizes, from approx. 50 nm, a pore size that corresponds to commercial polymeric hollow fibers employed throughout the literature (e.g., current study but also in [ 26 , 27 , 28 , 39 , 40 ]) to a few nanometers, approx. 1–3 nm, a pore size that corresponds to nanoporous ceramic single tube membranes.…”

Section: Discussionmentioning

confidence: 99%

“…Measures to reverse membrane wetting (e.g., post-treatment, drying, etc. ), and additional approaches in gas-liquid membrane contactor operation, such as oscillating gas flow conditions proposed by Hosseini et al [ 39 ], could improve mass transfer driving forces and enhance the general performance.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Innovative Gas-Liquid Membrane Contactor Systems for Carbon Capture and Mineralization in Energy Intensive Industries

et al. 2021

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CO2 mineralization is an alternative to conventional geological storage and results in permanent carbon storage as a solid, with no need for long-term monitoring and no requirements for significant energy input. Novel technologies for carbon dioxide capture and mineralization involve the use of gas-liquid membrane contactors for post-combustion capture. The scope of the present study is to investigate the application of hollow fiber membrane contactor technology for combined CO2 capture from energy-intensive industry flue gases and CO2 mineralization, in a single-step multiphase process. The process is also a key enabler of the circular economy for the cement industry, a major contributor in global industrial CO2 emissions, as CaCO3 particles, obtained through the mineralization process, can be directed back into the cement production as fillers for partially substituting cement in high-performance concrete. High CO2 capture efficiency is achieved, as well as CaCO3 particles of controlled size and crystallinity are synthesized, in every set of operating parameters employed. The intensified gas-liquid membrane process is assessed by calculating an overall process mass transfer coefficient accounting for all relevant mass transfer resistances and the enhanced mass transfer due to reactive conditions on the shell side. The obtained nanocomposite particles have been extensively characterized by DLS, XRD, TGA, SEM, TEM, and FTIR studies, revealing structured aggregates (1–2 μm average aggregate size) consisting of cubic calcite when the contactor mode is employed.

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Section: Discussionsupporting

confidence: 64%

Section: Discussionmentioning

confidence: 99%

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Innovative Gas-Liquid Membrane Contactor Systems for Carbon Capture and Mineralization in Energy Intensive Industries

et al. 2021

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“…The pulsation of solvents in a pulsed sieve-plate column [181], gas bubbling in membrane bioreactors [182] and the use of ultrasonic pulsation [183] in ultrafiltration all increase the flux by thinning the boundary layer and increasing the mechanical shear at the wall. The use of an oscillating flow within the solvent or gas phase of membrane contactors has also been shown to increase the CO2 flux [184,185]. In the solvent phase, oscillation with high frequency and amplitude thinned the liquid boundary layer and enhanced the liquid-phase mass transfer coefficient [184].…”

Section: Processesmentioning

confidence: 99%

Gas-liquid membrane contactors for carbon dioxide separation: A review

Kim

Scholes

Heath

et al. 2021

Chemical Engineering Journal

Self Cite

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“…Among all membrane systems, the membrane contactor systems can separate chemical components and create reactions among chemical components in a very small domain. Other applications of membrane contactors incude: membrane crystallization 3 , 4 , wastewater treatment 5 , 6 , liquid extraction 7 , 8 , and gas absorption 9 – 11 .…”

Section: Introductionmentioning

confidence: 99%

Influence of number of membership functions on prediction of membrane systems using adaptive network based fuzzy inference system (ANFIS)

Babanezhad

Masoumian

Nakhjiri

et al. 2020

Sci Rep

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In membrane separation technologies, membrane modules are used to separate chemical components. In membrane technology, understanding the behavior of fluids inside membrane module is challenging, and numerical methods are possible by using computational fluid dynamics (CFD). On the other hand, the optimization of membrane technology via CFD needs time and computational costs. Artificial Intelligence (AI) and CFD together can model a chemical process, including membrane technology and phase separation. This process can learn the process by learning the neural networks, and point by point learning of CFD mesh elements (computing nodes), and the fuzzy logic system can predict this process. In the current study, the adaptive neuro-fuzzy inference system (ANFIS) model and different parameters of ANFIS for learning a process based on membrane technology was used. The purpose behind using this model is to see how different tuning parameters of the ANFIS model can be used for increasing the exactness of the AI model and prediction of the membrane technology. These parameters were changed in this study, and the accuracy of the prediction was investigated. The results indicated that with low number of inputs, poor regression was obtained, less than 0.32 (R-value), but by increasing the number of inputs, the AI algorithm led to an increase in the prediction capability of the model. When the number of inputs increased to 4, the R-value was increased to 0.99, showing the high accuracy of model as well as its high capability in prediction of membrane process. The AI results were in good agreement with the CFD results. AI results were achieved in a limited time and with low computational costs. In terms of the categorization of CFD data-set, the AI framework plays a critical role in storing data in short memory, and the recovery mechanism can be very easy for users. Furthermore, the results were compared with Particle Swarm Optimization (PSOFIS), and Genetic Algorithm (GAFIS). The time for prediction and learning were compared to study the capability of the methods in prediction and their accuracy.

show abstract

Absorption of CO2 from flue gas under oscillating gas flow conditions in gas-solvent hollow fibre membrane contactors

Cited by 11 publications

References 30 publications

Innovative Gas-Liquid Membrane Contactor Systems for Carbon Capture and Mineralization in Energy Intensive Industries

Innovative Gas-Liquid Membrane Contactor Systems for Carbon Capture and Mineralization in Energy Intensive Industries

Gas-liquid membrane contactors for carbon dioxide separation: A review

Influence of number of membership functions on prediction of membrane systems using adaptive network based fuzzy inference system (ANFIS)

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