Hydrodynamic and absorption studies of carbon dioxide absorption in aqueous amide solutions using a bubble column contactor

Blanco, Antonio; García-Abuín, Alicia; Gómez‐Díaz, Diego; Navaza, José M.

doi:10.1590/s0104-66322013000400012

Cited by 6 publications

(5 citation statements)

References 30 publications

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“…On the other hand, the use of a different physical solvent than water may provide significant benefits over the overall process. In fact, some studies , concluded that N -methyl-2-pyrrolidone (MP) or N -ethyl-2-pyrrolidone (EP) show a suitable behavior in carbon dioxide physical absorption processes. For this reason, the blend of an alkanolamine with EP could be an alternative to capture carbon dioxide.…”

Section: Introductionmentioning

confidence: 99%

Density, Speed of Sound, Viscosity, and Excess Properties of N-Ethyl-2-pyrrolidone + 2-(Methylamino)ethanol [or 2-(Ethylamino)ethanol] from T = (293.15 to 323.15) K

et al. 2015

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Density, speed of sound, and viscosity of the binary mixtures N-ethyl-2-pyrrolidone (EP) + 2-(methylamino)ethanol [or 2-(ethylamino)ethanol] were measured at different temperatures from (293.15 to 323.15) K and over the entire range of concentrations. The excess isentropic compressibility, excess molar volumes, and viscosity deviations were calculated. Beside, the excess molar volumes were fitted using a Redlich−Kister equation, and the viscosity data were fitted by the Grunberg−Nissan model.

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Section: Introductionmentioning

confidence: 99%

Density, Speed of Sound, Viscosity, and Excess Properties of N-Ethyl-2-pyrrolidone + 2-(Methylamino)ethanol [or 2-(Ethylamino)ethanol] from T = (293.15 to 323.15) K

et al. 2015

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“…The increase in biomass, ethanol, and butanol productions is probably a result of an enhancement in the gas-liquid mass transfer coefficient due to the bioreactor configuration as well as the addition of Tween ® 80 in the culture medium as observed in the serum bottles fermentation. Studies have concluded that low concentrations of surface-active additives can affect gas-liquid mass transfer parameters such as the volumetric mass transfer coefficient (kLa) [42,43]. Belo et al [44] studied the influence of Tween®80 in hydrodynamic parameters and mass transfer of carbon dioxide (CO 2 ) in aqueous solution.…”

Section: Discussionmentioning

confidence: 99%

Residual Gas for Ethanol Production by Clostridium carboxidivorans in a Dual Impeller Stirred Tank Bioreactor (STBR)

et al. 2021

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Recycling residual industrial gases and residual biomass as substrates to biofuel production by fermentation is an important alternative to reduce organic wastes and greenhouse gases emission. Clostridium carboxidivorans can metabolize gaseous substrates as CO and CO2 to produce ethanol and higher alcohols through the Wood-Ljungdahl pathway. However, the syngas fermentation is limited by low mass transfer rates. In this work, a syngas fermentation was carried out in serum glass bottles adding different concentrations of Tween® 80 in ATCC® 2713 culture medium to improve gas-liquid mass transfer. We observed a 200% increase in ethanol production by adding 0.15% (v/v) of the surfactant in the culture medium and a 15% increase in biomass production by adding 0.3% (v/v) of the surfactant in the culture medium. The process was reproduced in stirred tank bioreactor with continuous syngas low flow, and a maximum ethanol productivity of 0.050 g/L.h was achieved.

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“…The gas flow rate range used in this work was 18–40 L h –1 . The experimental setup and procedures have been described widely in a previous work …”

Section: Methodsmentioning

confidence: 99%

2-(Methylamino)ethanol for CO₂ Absorption in a Bubble Reactor

et al. 2014

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This paper deals with the study of carbon dioxide capture using 2-(methylamino)ethanol (MAE) aqueous solutions. The reaction was studied in a bubble column reactor (BCR), and the most important aspects of the process, such as the hydrodynamic behavior (bubble size distribution, gas holdup, and interfacial area) and absorption phenomena (load of carbon dioxide and mass-transfer coefficient on the liquid phase), were discussed. The interfacial area was determined using a photographic method. Furthermore, the reaction mechanism was determined using nuclear magnetic resonance ( 1 H and 13 C NMR), thereby the species in the medium were controlled throughout time. These results agreed with carbon dioxide loading values, observing the formation of carbamate at the first part of the experiments and bicarbonate at high carbon dioxide loadings. The carbamate hydrolysis is the bicarbonate production pathway. This wide work has enabled us to perform a global analysis of process and to understand how MAE absorbs the gas phase. MAE aqueous solutions show an attractive behavior with a high carbon dioxide loading and high reaction rate. This information could be used in the near future to select the best conditions to capture carbon dioxide and to improve amine regeneration processes.

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Hydrodynamic and absorption studies of carbon dioxide absorption in aqueous amide solutions using a bubble column contactor

Cited by 6 publications

References 30 publications

Density, Speed of Sound, Viscosity, and Excess Properties of N-Ethyl-2-pyrrolidone + 2-(Methylamino)ethanol [or 2-(Ethylamino)ethanol] from T = (293.15 to 323.15) K

Density, Speed of Sound, Viscosity, and Excess Properties of N-Ethyl-2-pyrrolidone + 2-(Methylamino)ethanol [or 2-(Ethylamino)ethanol] from T = (293.15 to 323.15) K

Residual Gas for Ethanol Production by Clostridium carboxidivorans in a Dual Impeller Stirred Tank Bioreactor (STBR)

2-(Methylamino)ethanol for CO₂ Absorption in a Bubble Reactor

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Hydrodynamic and absorption studies of carbon dioxide absorption in aqueous amide solutions using a bubble column contactor

Cited by 6 publications

References 30 publications

Density, Speed of Sound, Viscosity, and Excess Properties of N-Ethyl-2-pyrrolidone + 2-(Methylamino)ethanol [or 2-(Ethylamino)ethanol] from T = (293.15 to 323.15) K

Density, Speed of Sound, Viscosity, and Excess Properties of N-Ethyl-2-pyrrolidone + 2-(Methylamino)ethanol [or 2-(Ethylamino)ethanol] from T = (293.15 to 323.15) K

Residual Gas for Ethanol Production by Clostridium carboxidivorans in a Dual Impeller Stirred Tank Bioreactor (STBR)

2-(Methylamino)ethanol for CO2 Absorption in a Bubble Reactor

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2-(Methylamino)ethanol for CO₂ Absorption in a Bubble Reactor