CO2 capture by ion exchange resins as amine functionalised adsorbents

Parvazinia, Mahmoud; García, Susana; Maroto‐Valer, M. Mercedes

doi:10.1016/j.cej.2017.08.087

Cited by 52 publications

(29 citation statements)

References 43 publications

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“…[4][5][6][7] So far the study of amine-loaded solid sorbents mainly focuses on immobilizing amines onto the inner surface of porous supporting materials, such as metal-organic frameworks (MOFs), [8][9][10][11][12][13] mesoporous molecular sieves, 14-22 silicas [23][24][25][26][27][28][29][30][31] and so on. [32][33][34][35][36][37][38][39][40] Chen et al incorporated polyethyleneimine (PEI) into mesoporous zeolite 13X prepared by pore-expanding original micropores; due to PEI-dispersion in mesopores, the CO 2 adsorption capacity for PEI-modied 13X reached 80 mg g À1 at 100 C under a pure CO 2 atmosphere. 16 Saha immobilized PEI in silicas and polymethyl methacrylate (PMMA) to prepare type I adsorbents, graed different amounts of aminosilanes in mesoporous SBA-15 to prepare type II adsorbents and performed breakthrough adsorption experiments.…”

Section: Introductionmentioning

confidence: 99%

The dynamic CO₂ adsorption of polyethylene polyamine-loaded MCM-41 before and after methoxypolyethylene glycol codispersion

et al. 2019

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Section: Introductionmentioning

confidence: 99%

The dynamic CO₂ adsorption of polyethylene polyamine-loaded MCM-41 before and after methoxypolyethylene glycol codispersion

et al. 2019

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“…Modification adsorbents with amine groups are an effective and cheap way to capture CO 2 from flue gas and ambient air . Generally, impregnation and grafting are two important methods for making ready adsorbents by amines …”

Section: Introductionmentioning

confidence: 99%

“…19 Modification adsorbents with amine groups are an effective and cheap way to capture CO 2 from flue gas and ambient air. 5,19,[27][28][29][30] Generally, impregnation and grafting are two important methods for making ready adsorbents by amines. [31][32][33][34][35][36] In the impregnation procedure, there are no chemical interactions between the amine and the solid adsorbent and the amine is physically loaded on the surface of solid adsorbent, whereas in grafting, covalent chemical bonding occurs between the amine and the solid adsorbent.…”

Section: Introductionmentioning

confidence: 99%

Piperazine‐modified activated alumina as a novel promising candidate for CO₂ capture: experimental and modeling

2018

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In this research, the CO2 adsorption process was studied using modified activated alumina with a piperazine solution as a novel sorbent. Activated alumina was modified with a piperazine solution concentration in the range of 1–4 wt%. Adsorption experiments were performed to evaluate the operating parameters, including CO2 pressure in the range of 2–8 bar, adsorbent dosage in the range of 0.5–2 g, temperature in the range of 25–85°C and adsorbent mesh in the range of 200–800 micron. Maximum adsorption capacity (222.01 mg CO2/g modified activated alumina) was determined at a temperature of 25°C, pressure of 8 bar, and adsorbent dosage of 0.5 g, with a piperazine solution of 2 wt%. The results of the experiments showed that the rate of CO2 adsorption increases with increasing pressure and decreasing temperature. The Freundlich isotherm model with correlation coefficient of 0.999 was found to be the best for fitting the CO2 adsorption isotherm data. The kinetic study also indicated that the Elovich model fits the experimental kinetic data well. The negative values of Gibbs free energy change (ΔG°) and enthalpy change (ΔH°) show that the reaction is spontaneous in nature and exothermic. The negative value of entropy change (ΔS°) shows a reduction in the irregularity of the adsorption process. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…This finding suggests that CO2 chemisorption seems to occur in the CC electrode material. The CO2 chemisorption can occur through the chemical affinity between specific chemical surface groups and CO2, such as amine groups 159 .…”

Section: Conventional Amphoteric-donnan Modelmentioning

confidence: 99%

“…Among the strategies to reduce CO2 emissions, CO2 capture technologies have a major role to play 11,157 . Although a large number of technologies have already been proposed for post-combustion CO2 capture (e.g., amine sorbents 102,158,159 , calcium looping 160 , gas separation membranes 46,161 ), there is still an urgent need of novel technologies to capture CO2 from flue gas and also directly from the atmosphere 155,162 . Recently a new technology has been proposed to capture CO2 based on membrane capacitive deionization (MCDI) 154 .…”

Section: Introductionmentioning

confidence: 99%

Capacitive processes for carbon capture and energy recovery from CO2 emissions : Shaping a new technology going from water to gas applications

Legrand¹

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Nonetheless, how can we convert a water technology into a gas technology? The first step is to identify a strategy to produce ions from CO2 gas. As CO2 gas is not an ion, the CDI and CAPMIX cells are not directly usable with gas streams. Nevertheless, ions can be generated from CO2 by sparging CO2 gas in water, a process in which bicarbonate ions are formed (see Box 1). 1.3.2. Electrochemical pH swing CO2 capture can be achieved by generating a pH swing between two chambers in an electrochemical cell. The electrochemical pH swing has been mostly investigated in electrodialysis cell 62,63 and bipolar electrodialysis cell 49,53-55. The CO2 absorption takes place in the alkaline compartment (high pH) through the reaction of CO2 with hydroxide (CO + OH → HCO), whereas the CO2 desorption takes place in the acidic compartment (HCO + H → CO). Fig. 1.6 shows an example of CO2 capture with bipolar electrodialysis. Supercapacitive swing adsorption (SAA) is an electrical double-layer capacitor (EDLC) for CO2 capture 58-61. The concept consists of adsorbing CO2 on the cathode in a gas channel while charging the EDLC cell in a highly concentrated NaCl solution. Fig. 1.8 shows an illustration of the SAA concept. Three mechanisms have been suggested for the CO2 gas adsorption in the electrodes, i.e. (a) adsorption of gas molecules at gas-solid interface, (b) adsorption of gas molecules at the gas-liquid interface, and (c) adsorption of ionized gas molecule 61. Adsorption at the gas-solid interface would occur when CO2 gas is adsorbed in non-filled electrode pores stimulated by a change of affinity between the pore wall and CO2 during the charging step of the cell. Adsorption at the gas-liquid interface would occur due to an increased CO2 solubility in the electrical double layer (EDL) by charging the capacitive cell. Finally, ionization adsorption occurs through the adsorption where ϵ. is the dielectric constant, ϵ 0 is the permittivity of free space, R the gas constant, T the temperature, F the Faraday constant and c 4 the ion concentration in the bulk solution. Finally, the Stern layer represents the layer of solution separating the diffuse layer, and the carbon matrix surface. In theory, ions are surrounded by a hydration shell, and therefore, the charged ions are not infinitely close to the electrode surface. IEMs are ionomer, i.e., charged polymer, which primarily act as selective charge barriers. Ideally, only anions can be transported through the AEM, and only cations can be transported through the CEM (counter-ion transport). IEMs are mainly used in CDI to improve the charge efficiency (in Membrane CDI or MCDI) 70,72 and are required in CAPMIX to generate an electrical potential.

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CO2 capture by ion exchange resins as amine functionalised adsorbents

Cited by 52 publications

References 43 publications

The dynamic CO₂ adsorption of polyethylene polyamine-loaded MCM-41 before and after methoxypolyethylene glycol codispersion

The dynamic CO₂ adsorption of polyethylene polyamine-loaded MCM-41 before and after methoxypolyethylene glycol codispersion

Piperazine‐modified activated alumina as a novel promising candidate for CO₂ capture: experimental and modeling

Capacitive processes for carbon capture and energy recovery from CO2 emissions : Shaping a new technology going from water to gas applications

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CO2 capture by ion exchange resins as amine functionalised adsorbents

Cited by 52 publications

References 43 publications

The dynamic CO2 adsorption of polyethylene polyamine-loaded MCM-41 before and after methoxypolyethylene glycol codispersion

The dynamic CO2 adsorption of polyethylene polyamine-loaded MCM-41 before and after methoxypolyethylene glycol codispersion

Piperazine‐modified activated alumina as a novel promising candidate for CO2 capture: experimental and modeling

Capacitive processes for carbon capture and energy recovery from CO2 emissions : Shaping a new technology going from water to gas applications

Contact Info

Product

Resources

About

The dynamic CO₂ adsorption of polyethylene polyamine-loaded MCM-41 before and after methoxypolyethylene glycol codispersion

The dynamic CO₂ adsorption of polyethylene polyamine-loaded MCM-41 before and after methoxypolyethylene glycol codispersion

Piperazine‐modified activated alumina as a novel promising candidate for CO₂ capture: experimental and modeling