Modeling and simulation of CO2 separation from CO2/CH4 gaseous mixture using potassium glycinate, potassium argininate and sodium hydroxide liquid absorbents in the hollow fiber membrane contactor

Nakhjiri, Ali Taghvaie; Heydarinasab, Amir; Bakhtiari, Omid; Mohammadi, Toraj

doi:10.1016/j.jece.2018.01.068

Cited by 56 publications

(31 citation statements)

References 41 publications

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“…The traditional packed bed and plate column and cryogenic are the most commonly used techniques for the removal of CO 2 gas from gaseous mixtures in alkanolamine solutions [5,15,16]. In spite of the success of these units, they suffered from certain weaknesses such as flooding, channeling, foaming, and high operating cost [17].…”

Section: Introductionmentioning

confidence: 99%

“…The alternative emerged technique is the solvent-gas membrane interaction system that can compete with the traditional solvent system; the membrane has a small structure size, liquid absorbent and gas stream flow in separate channels, is easy to scale up, and a high surface area per unit volume [2,[17][18][19]. Many researchers recommend a hollow fiber membrane contacting system for the absorption and stripping of CO 2 from rich solvent because of its noticeable advantages compared to conventional processes [13,16,[20][21][22][23]. The effective absorption of CO 2 in lean solvent and the desorption process of CO 2 from rich liquid solvent (regeneration process) in hollow fiber membrane contactor depends preferably on the high membrane porosity and less on membrane moistening as wetting depends mainly on the reactivity of membrane material with solvent being used.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the literature work has focused on modeling and simulation of CO 2 absorption in membrane contactors; less attention has been given to CO 2 stripping from rich solvents in membrane contactors [16,[33][34][35][36], and almost none were established for simultaneous modeling and simulation of the absorption/stripping process in the solvent-gas membrane separation process. Accordingly, the purpose of this work is the modeling and simulation of the simultaneous absorption/stripping of CO 2 in lean and rich PG aqueous solution in membrane contactor, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Modeling and Simulation of the Simultaneous Absorption/Stripping of CO2 with Potassium Glycinate Solution in Membrane Contactor

Ghasem

2020

Membranes

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Global warming is an environmental problem caused mainly by one of the most serious greenhouse gas, CO2 emissions. Subsequently, the capture of CO2 from flue gas and natural gas is essential. Aqueous potassium glycinate (PG) is a promising novelty solvent used in the CO2 capture compared to traditional solvents; simultaneous solvent regeneration is associated with the absorption step. In present work, a 2D mathematical model where radial and axial diffusion are considered is developed for the simultaneous absorption/stripping process. The model describes the CO2/PG absorption/stripping process in a solvent–gas membrane absorption process. Regeneration data of rich potassium glycinate solvent using a varied range of acid gas loading (mol CO2 per mol PG) were used to predict the reversible reaction rate constant. A comparison of simulation results and experimental data validated the accuracy of the model predictions. The stripping reaction rate constant of rich potassium glycinate was determined experimentally and found to be a function of temperature and PG concentration. Model predictions were in good agreement with the experimental data. The results reveal that the percent removal of CO2 is directly proportional to CO2 loading and solvent stripping temperature.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modeling and Simulation of the Simultaneous Absorption/Stripping of CO2 with Potassium Glycinate Solution in Membrane Contactor

Ghasem

2020

Membranes

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“…They understood that increment in the velocity of gaseous flow from 0.1 to 0.3 m s -1 significantly enhanced the CO 2 absorption flux from 6.25 × 10 -4 to 7.75 × 10 -4 mol m -2 s -1 [20]. The influence of potassium glycinate (PG), sodium hydroxide (NaOH) and potassium argininate (PA) absorbents on the sequestration performance of CO 2 was studied by Nakhjiri et al [21]. They perceived that PA could sequester about 95 % of inlet CO 2 while the sequestration efficiency of CO 2 using PG and NaOH was only 62 and 57 % of CO 2 , respectively [21].…”

Section: Introductionmentioning

confidence: 99%

“…The influence of potassium glycinate (PG), sodium hydroxide (NaOH) and potassium argininate (PA) absorbents on the sequestration performance of CO 2 was studied by Nakhjiri et al [21]. They perceived that PA could sequester about 95 % of inlet CO 2 while the sequestration efficiency of CO 2 using PG and NaOH was only 62 and 57 % of CO 2 , respectively [21].…”

Section: Introductionmentioning

confidence: 99%

CFD Analysis of CO2 Sequestration Applying Different Absorbents Inside the Microporous PVDF Hollow Fiber Membrane Contactor

Nakhjiri

Heydarinasab

2019

Period. Polytech. Chem. Eng.

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The sequestration process of greenhouse contaminants such as CO 2 via hollow fiber membrane contactor (HFMC) is regarded as a promising technology to manage the deleterious impressions of CO 2 on environment such as global warming and air pollution.This investigational paper renders a wide-ranging 2D simulation in order to assess the removal performance of CO 2 from CO 2 /CH 4 gaseous stream (containing 80 % CH 4 and 20 % CO 2 ) in the HFMC. As the novelty, the evaluation of CO 2 acid gas removal from gaseous mixture applying four novel absorbing agents (potassium threonate (PT), piperazine (PZ), pure water (H 2 O) and methyldiethanolamine (MDEA)) is implemented in the HFMC with the aim of introducing a more efficient liquid absorbent for CO 2 sequestration.Model validation is done based on the comparison of mathematical model outcomes and experimental data in a wide range of H 2 O velocity and confirms a desirable agreement with an average relative deviation (ARD) of approximately 3 % for CO 2 flux. It is perceived from the results that PZ is introduced as the most efficient liquid absorbent for CO 2 sequestration and MDEA, PT and H 2 O are in the next category (100 % removal using PZ > 96 % removal using MDEA > 89 % removal using PT > 57 % removal using H 2 O). The results corroborate that increase in membrane tortuosity and gas velocity negatively affects the sequestration process while increment of module length and porosity improve the separation of CO 2 .

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Enhanced carbon dioxide membrane‐based absorption with amino acid solutions

Sefidi

Winand

Luis

2023

J of Chemical Tech & Biotech

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BackgroundCurrent technologies for carbon dioxide (CO2) capture are based on a variety of physical and chemical processes using absorption towers. Overcoming the high energy consumption of conventional absorption is essential to develop a process that makes sense in terms of CO2 captured versus CO2 emitted. In this work, we propose the use of a membrane contactor that allows an efficient gas–liquid contact and an aqueous alkaline solution with several amino acids (i.e. arginine, methionine, valine, serine, 6‐aminohexanoic acid) as the absorption liquid.ResultsResults show clear differences in absorption performance among the studied amino acids, with arginine as the best choice. Using arginine does not only lead to the highest mass transfer coefficient (ca 0.004 m3 m−2 min−1) in the membrane contactor but also a remarkable CO2 absorption capacity without the need for an alkaline component that enhances the reaction and the mass transfer.ConclusionThe use of membrane contactors with a green solvent is a promising step that needs further studies. As the results demonstrate, arginine has shown a great performance; thus, it has been chosen for further investigation. © 2023 Society of Chemical Industry.

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Modeling and simulation of CO2 separation from CO2/CH4 gaseous mixture using potassium glycinate, potassium argininate and sodium hydroxide liquid absorbents in the hollow fiber membrane contactor

Cited by 56 publications

References 41 publications

Modeling and Simulation of the Simultaneous Absorption/Stripping of CO2 with Potassium Glycinate Solution in Membrane Contactor

Modeling and Simulation of the Simultaneous Absorption/Stripping of CO2 with Potassium Glycinate Solution in Membrane Contactor

CFD Analysis of CO2 Sequestration Applying Different Absorbents Inside the Microporous PVDF Hollow Fiber Membrane Contactor

Enhanced carbon dioxide membrane‐based absorption with amino acid solutions

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