Absorption of carbon dioxide into aqueous solutions of piperazine activated 2-amino-2-methyl-1-propanol

Samanta, Arunkumar; Bandyopadhyay, Syamalendu S.

doi:10.1016/j.ces.2008.10.049

Cited by 114 publications

(80 citation statements)

References 29 publications

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“…Aqueous amine solutions such as monoethanolamine (MEA) [13], diethanolamine (DEA) and methyldiethanolamine (MDEA) are the most widely used solvents for amine based chemical absorption. They are primary, secondary and tertiary amine [8]. However, continuous regeneration of primary and secondary alkanolamine solutions is a very energy intensive process due to high heating and pumping costs [17].…”

Section: Introductionmentioning

confidence: 99%

“…This new type of sorbent for CO 2 adsorption should has a porous structure of solid supports to be filled with amine compounds to enable the retention of CO 2 molecules. Commonly used porous solid supports are silica fume [2], zeolite [4], mesoporous silica [8,13,20], high-carbon fly ash [18], activated carbon [27] and hydrotalcyte [28]. However, solid sorbents prepared with amorphous silica [12,20] and octadecylamine (ODA) for CO 2 capture are still limited.…”

Section: Introductionmentioning

confidence: 99%

“…There were several works reported in reducing CO 2 concentration by capture and separate the CO 2 gas. There are different unit operations such as liquid absorption phenomena [5][6][7][8], solid adsorption [9][10][11], cryogenic techniques [12] and selective diffusion through polymer, metallic or ceramic membranes [13].…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

Tahari

Yarmo

2014

AIP Conference Proceedings

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Abstract. Silica dioxide catalyst (SiO 2 ) can be modified by impregnating amine-containing compounds to improve the CO 2 adsorption capacity. Four type of amines, i.e., monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA) and octadecylamine (ODA) were supported on silica dioxide particles. The amine-modified samples were characterized using FTIR, BET and FESEM. All the prepared solid sorbents exhibited type IV isotherm with hysteresis loop. Specific surface areas of the sorbents were significantly reduced due to blocking of micropores and mesopores by the amine compounds. Reactivity of solid sorbents towards CO 2 was evaluated using isothermal CO 2 adsorption by BET. CO 2 adsorption capacity increased with the weight percent of amine compounds loaded onto the SiO 2 . 15 and 25 wt % MEA/SiO 2 and 25 wt % ODA/SiO 2 sorbents showed greater CO 2 adsorption capacities compared to the virgin sample (SiO 2 ). This study shows that the order of adsorption capacity for the four types of amines was MEA (4.05 wt % CO 2 /adsorbent) > ODA (2.45 wt % CO 2 /adsorbent) > DEA (1.71 wt % CO 2 /adsorbent) > TEA (0.91 wt % CO 2 /adsorbent). CO 2 uptakes by ODA/SiO 2 sorbents were higher than DEA/SiO 2 and TEA/SiO 2 is mainly due to their smaller pore volume and pore width of the adsorbent, therefore, greater interactions of CO 2 -ODA in pores. MEA/SiO 2 has the highest ability in capturing CO 2 because of the increasing steric hindrance of long chain ODA and alkyl substituent on DEA and TEA.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

Tahari

Yarmo

2014

AIP Conference Proceedings

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“…Growing environmental concerns today for global warming have motivated extensive research activities towards developing more efficient and cost effective processes for CO 2 capture from large point sources of CO 2 , such as power plants, steel plants, etc, since fossil fuel will continue to hold the major role in meeting the global energy demand, which is projected to rise up to 55% by 2030. Amine based regenerative chemical absorption processes have been widely practiced for several years for CO 2 removal from natural gas and synthesis gas streams.…”

Section: Introductionmentioning

confidence: 99%

“…Amine based regenerative chemical absorption processes have been widely practiced for several years for CO 2 removal from natural gas and synthesis gas streams. But, the major challenges for CO 2 capture from the flue gas of coal based power plants are the large volumetric flow rates of flue gas at essentially atmospheric pressure with large amount of CO 2 at low partial pressures. A common industrial choice is to use 15-30 wt% aqueous mono ethanol amines (MEA) for regenerative absorption of CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Carbon Dioxide Capture: Absorption of Carbon Dioxide in Piperazine Activated Concentrated Aqueous 2-Amino-2-Methyl-1-Propanol

Dash¹,

Bandyopadhyay²

2013

JOCET

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Abstract-In this work new experimental data on the rate of absorption of CO 2 into PZ activated concentrated aqueous AMP in the temperature range of (323-333) K are presented. Rate activator PZ is used with a concentration of (2-8) wt%, keeping the total amine concentration in the solution at 50 wt%. The vapour-liquid equilibrium (VLE) of CO 2 into aqueous solutions of (AMP+PZ) have also been measured and modeled in order to determine the liquid phase speciation of (AMP+PZ+CO 2 +H 2 O) system and equilibrium CO 2 loading. The theoretical absorption-rate model used to interpret the experimental kinetic data is based on all possible chemical reactions in the liquid phase. The average absolute deviation between the experimental and model results is about 6.8 %.Index Terms-CO 2 capture, 2-Amino-2-methyl-1-propanol, piperazine, diffusion-reaction model.

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CO₂ Absorption into Aqueous Solutions of a Polyamine (PZEA), a Sterically Hindered Amine (AMP), and their Blends

2010

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Among numerous techniques existing for reducing CO 2 emissions, CO 2 capture by absorption in aqueous alkanolamine solutions was specifically studied in this work. For the choice of the adequate amine solution, two major criteria must be taken into account: absorption performances (higher with primary and secondary amines) and energy costs for solvent regeneration (more interesting with tertiary and sterically hindered amines). The different types of amines can also be mixed in order to combine the specific advantages of each type of amines, an activation phenomenon being observed. Aqueous solutions of (piperazinyl-1)-2-ethylamine (PZEA, a polyamine known as absorption activator) and 1-amino-2-propanol (AMP, a sterically hindered amine), pure or mixed with other amines, are experimentally compared with respect to CO 2 removal performances by means of absorption test runs achieved in a special gas-liquid contactor at 25°C. The positive impact of addition of PZEA to monoethanolamine (MEA), N-methyldiethanolamine (MDEA), and AMP solutions was clearly highlighted. The absorption performances have also been satisfactorily simulated with coherent physicochemical data. IntroductionA wide variety of amine-based solvents can be used to absorb CO 2 , such as aqueous solutions of monoethanolamine (MEA) or N-methyldiethanolamine (MDEA), already studied in our previous work [1]. Blended alkanolamine solutions are also used to combine the advantages of each type of amine: the fast kinetics from primary and secondary alkanolamines and the high absorption capacity with low solvent regeneration cost from tertiary or sterically hindered amines (SHAs). In order to obtain better absorption performances, another possibility is to add to the aqueous amine solution an absorption activator such as piperazine leading to faster absorption kinetics [2][3][4][5].This work aimed actually at comparing the CO 2 absorption performances into several aqueous amine solutions and their blends. The amine solutions studied in this first step are: (piperazinyl-1)-2-ethylamine (PZEA), an absorption activator already tested by [6,7], and 1-amino-2-propanol (AMP), a sterically hindered amine. The absorption performances of these amines, blended with the classical alkanolamines MEA and MDEA, were here also tested.Data available in the literature related to amine systems of interest, i.e., containing AMP or MDEA, are quite widespread: (i) thermodynamical data relative to the solubility of CO 2 in amine solutions giving partial pressure of CO 2 as a function of CO 2 loading of the solution, e.g., in [8] for MDEA + AMP; (ii) kinetic data assessed from absorption test runs generally achieved in wetted wall columns for different amine mixtures: AMP + MEA [9,10], AMP + DEA [11], AMP + PZ [12], and PZEA + MDEA [7]. Influence of contact time, concentration of amines, and temperature are investigated, but no global comparison of efficiencies is possible.To our knowledge, the addition of PZEA to MEA or AMP was never considered in previous studies. As all our exp...

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Absorption of carbon dioxide into aqueous solutions of piperazine activated 2-amino-2-methyl-1-propanol

Cited by 114 publications

References 29 publications

Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

Carbon Dioxide Capture: Absorption of Carbon Dioxide in Piperazine Activated Concentrated Aqueous 2-Amino-2-Methyl-1-Propanol

CO₂ Absorption into Aqueous Solutions of a Polyamine (PZEA), a Sterically Hindered Amine (AMP), and their Blends

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Absorption of carbon dioxide into aqueous solutions of piperazine activated 2-amino-2-methyl-1-propanol

Cited by 114 publications

References 29 publications

Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

Adsorption of CO2 on silica dioxide catalyst impregnated with various alkylamine

Carbon Dioxide Capture: Absorption of Carbon Dioxide in Piperazine Activated Concentrated Aqueous 2-Amino-2-Methyl-1-Propanol

CO2 Absorption into Aqueous Solutions of a Polyamine (PZEA), a Sterically Hindered Amine (AMP), and their Blends

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CO₂ Absorption into Aqueous Solutions of a Polyamine (PZEA), a Sterically Hindered Amine (AMP), and their Blends