Carbon dioxide absorption into aqueous potassium salt solutions of glutamine amino acid

Zarei, Alireza; Hafizi, Ali; Rahimpour, Mohammad Reza; Raeissi, Sona

doi:10.1016/j.molliq.2019.111743

Cited by 33 publications

(28 citation statements)

References 40 publications

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“…This positive charge might form a hydrogen bond with water, which favors deprotonation of CO 2 -amino acid complex and facilitation of carbamate Therefore, in comparison to some other amino acids, glutamine has a higher capacity of CO 2 absorption, which can be attributed to the presence of nitrogen groups acting as a base groups to accept proton and form carbamate, respectively (Shen et al 2015). The general reaction mechanism of CO 2 by amino acids is demonstrated in equation 1 (Zarei et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Experimental study of carbon dioxide absorption by Fe2O3@glutamine/NMP nanofluid

Elhambakhsh

Heidari

Keshavarz

2021

Environ Sci Pollut Res

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In this study, the magnetic based nanoparticle (NP) of Fe 2 O 3 @glutamine (C 5 H 10 N 2 O 3 ) was synthesized to improve the Fe 2 O 3 properties in absorbing carbon dioxide (CO 2 ) using the base uid of hydrous N-Methyl-2-pyrrolidone (NMP) solution (50wt.%), as a physically powerful CO 2 absorbent. To do this, several nano-NMP solutions, in different weight percentages of NPs were rst prepared. Then, in a batch setup, the nano-NMP solutions were directly exposed to CO 2 gaseous (at the pressures of 20, 30, and 40 bar) to clarify the effects of the mass percentage of NPs and initial pressure on CO 2 absorption. Results clearly illustrated that Fe 2 O 3 nano uid was not stable more than 0.025 wt.%. However, Fe 2 O 3 @glutamine nano uid was stable approximately two times more than Fe 2 O 3 nano uid due to the presence of glutamine as a hydrophilic agent in the structure of Fe 2 O 3 @glutamine. Moreover, in comparison to the base uid (NMP solution), although Fe 2 O 3 increased CO 2 absorption up to 9.14%, Fe 2 O 3 @glutamine NPs caused the CO 2 absorption to increase up to 19.41%, which can be determined as the chemical reactions of two amino groups in the glutamine structure with CO 2 and also higher Stability of Fe 2 O 3 @glutamine NPs compared to bare Fe 2 O 3 NPs.

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Section: Introductionmentioning

confidence: 99%

Experimental study of carbon dioxide absorption by Fe2O3@glutamine/NMP nanofluid

Elhambakhsh

Heidari

Keshavarz

2021

Environ Sci Pollut Res

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“…An increase in glycinate concentration enhances the absorption rate at low carbon dioxide loadings. This behavior can be related with a lower reaction rate when glycinate is used, in comparison with the reaction between prolinate and carbon dioxide [14]. Then, a higher glycinate concentration tends to increase the reaction rate and it has a positive impact on the carbon dioxide absorption rate.…”

Section: Resultsmentioning

confidence: 99%

“…This type of compounds (amino acids) includes the same functional groups than alkanolamines which allows to consider them as suitable substances to be used for carbon dioxide chemical separation by gas‐liquid absorption. These compounds have also other interesting characteristics that can improve the conventional solvents: A lower degradation rate because these compounds increase the resistance to oxidative degradation 12, 13. Low volatility due to the ionic characteristics of solutes in the aqueous solutions. Practically absence of toxicity and environmental issues 14. …”

Section: Introductionmentioning

confidence: 99%

Carbon Dioxide Capture by Chemical Solvents Based on Amino Acids: Absorption and Regeneration

et al. 2020

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The use of sodium salts of aqueous solutions of different amino acids (glycinate and prolinate) for carbon dioxide (CO2) separation by chemical absorption is analyzed in a bubble‐column reactor under different experimental conditions of solvent concentration and gas flow rate. The differences in absorption rate and reaction mechanism caused by the presence of carboxylic groups in comparison to the case without (monoethanolamine and pirrolidine) are evaluated. Glycinate solvent reaches a similar behavior than monoethanolamine aqueous solutions but with a higher destabilization of carbamate that allows to increase CO2 loading. Prolinate exhibits a similar behavior than pirrolidine at low CO2 loadings. Both solvents show a significant reduction in absorption capacity when stripping regeneration is carried out.

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“…Various human activities such as deforestation, fossil fuel combustion for transportation, industries, and so on are the main sources of CO 2 emission. 1 , 2 Climate change due to greenhouse gases is now threatening our habitation on earth more than ever; therefore, scientists are actively upgrading CO 2 capture technologies to mitigate CO 2 pollution. These technologies can be generally categorized into pre-combustion, oxy-combustion, and post-combustion levels.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of CO₂ Absorption by Amino Acid Salt Aqueous Solution Using Hybrid Soft Computing Methods

et al. 2021

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Amino acid salt (AAs) aqueous solutions have recently exhibited a great potential in CO 2 absorption from various gas mixtures. In this work, four hybrid machine learning methods were developed to evaluate 626 CO 2 and AAs equilibrium data for different aqueous solutions of AAs (potassium sarcosinate, potassium l -asparaginate, potassium l -glutaminate, sodium l -phenylalanine, sodium glycinate, and potassium lysinate) gathered from reliable references. The models are the hybrids of the least squares support vector machine and coupled simulated annealing optimization algorithm, radial basis function neural network (RBF-NN), particle swarm optimization–adaptive neuro-fuzzy inference system, and hybrid adaptive neuro-fuzzy inference system. The inputs of the models are the CO 2 partial pressure, temperature, mass concentration in the aqueous solution, molecular weight of AAs, hydrogen bond donor count, hydrogen bond acceptor count, rotatable bond count, heavy atom count, and complexity, and the CO 2 loading capacity of AAs aqueous solution is considered as the output of the models. The accuracies of the models’ results were verified through graphical and statistical analyses. RBF-NN performance is promising and surpassed that of other models in estimating the CO 2 loading capacities of AAs aqueous solutions.

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Carbon dioxide absorption into aqueous potassium salt solutions of glutamine amino acid

Cited by 33 publications

References 40 publications

Experimental study of carbon dioxide absorption by Fe2O3@glutamine/NMP nanofluid

Experimental study of carbon dioxide absorption by Fe2O3@glutamine/NMP nanofluid

Carbon Dioxide Capture by Chemical Solvents Based on Amino Acids: Absorption and Regeneration

Evaluation of CO₂ Absorption by Amino Acid Salt Aqueous Solution Using Hybrid Soft Computing Methods

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Carbon dioxide absorption into aqueous potassium salt solutions of glutamine amino acid

Cited by 33 publications

References 40 publications

Experimental study of carbon dioxide absorption by Fe2O3@glutamine/NMP nanofluid

Experimental study of carbon dioxide absorption by Fe2O3@glutamine/NMP nanofluid

Carbon Dioxide Capture by Chemical Solvents Based on Amino Acids: Absorption and Regeneration

Evaluation of CO2 Absorption by Amino Acid Salt Aqueous Solution Using Hybrid Soft Computing Methods

Contact Info

Product

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Evaluation of CO₂ Absorption by Amino Acid Salt Aqueous Solution Using Hybrid Soft Computing Methods