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Babcock, Roger W.; Malda, Jos; Radway, JoAnn C.

doi:10.1023/a:1019924226457

Cited by 68 publications

(5 citation statements)

References 22 publications

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“…This is often reported in terms of the volumetric mass transfer coefficient, k L a . As previously stated, CO 2 absorption/desorption has been studied using a myriad of reactor types, including but not limited to mechanically agitated tanks, bubble columns, packed‐bed absorption columns, and hollow fibre membranes . The mass transfer performance of most of these reactors/contactors is summarized in a previous work, which in turn highlighted major obstacles when comparing these studies against each other.…”

Section: Methodsmentioning

confidence: 99%

Absorption and desorption of carbon dioxide in several water types

Al‐Hindi

Azizi

2017

Can J Chem Eng

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This study investigated the effect of water type on the rate of CO 2 transfer from/to an aqueous phase with varying degree of water salinity. The absorption and desorption experiments were conducted on reverse osmosis product, brackish well, and brackish water reverse osmosis reject waters as well as seawater in a mechanically agitated tank. Results show that the direction of mass transfer has a major impact on the value of the volumetric mass transfer coefficient, k L a, with the absorption experiments always rendering higher values. Furthermore, k L a values always decreased with salinity in both absorption and desorption experiments until a certain critical salinity value was reached, beyond which mass transfer increased again. However, k L a values were found to decrease continuously with an increase in the water alkalinity in absorption experiments, while no clear conclusion could be drawn for the alkalinity effect in the case of desorption experiments. These observations suggest that the effect of alkalinity should be further investigated to elucidate its impact along with the salinity on the volumetric mass transfer rate.

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Section: Methodsmentioning

confidence: 99%

Absorption and desorption of carbon dioxide in several water types

Al‐Hindi

Azizi

2017

Can J Chem Eng

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“…But undissolved CO 2 is lost by outgassing and sufficient dissolved CO 2 should be provided to avoid carbon limitation [7].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the influential factors for the improvement of CO2 utilization efficiency and CO2 mass transfer rate

Ryu

Kim

2009

Journal of Industrial and Engineering Chemistry

149

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“…Although this is an important feature of the reactor design, no direct study has heretofore been made of the rate of carbon dioxide transfer from air bubbles into the aqueous phase. Instead, researchers commonly assume that the mass transfer rate of carbon dioxide can be estimated using values for oxygen mass transfer rates that have been extensively measured. − …”

Section: Introductionmentioning

confidence: 99%

Measurement of Overall Volumetric Mass Transfer Coefficients for Carbon Dioxide in a Well-Mixed Reactor Using a pH Probe

Hill

2006

Ind. Eng. Chem. Res.

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Carbon dioxide can serve as a source of carbon for photosynthetic cell cultures, but it must reside in the aqueous phase prior to uptake. Carbon dioxide is a gas at room temperature and pressure, and its solubility in water is very low. It resides in the aqueous phase as four different species, carbon dioxide, CO2; carbonic acid, H2CO3; bicarbonate ion, HCO3 -; and carbonate ion, CO3 =, whose equilibrium concentrations are pH dependent. With these factors taken into account, a model has been developed to allow the pH profile of an aqueous phase, undergoing a sudden application of bubbles containing carbon dioxide, to be used as a measure of the transient dissolved carbon dioxide concentration in a reactor. Experimentally measured carbon dioxide profiles were used to calculate the overall volumetric mass transfer coefficients for carbon dioxide into a well-mixed reactor as a function of temperature, stirring speed, and aeration rate. Finally, an empirical correlation is provided to predict the overall volumetric mass transfer coefficient of carbon dioxide as a function of these three operating variables.

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Untitled

Cited by 68 publications

References 22 publications

Absorption and desorption of carbon dioxide in several water types

Absorption and desorption of carbon dioxide in several water types

Optimization of the influential factors for the improvement of CO2 utilization efficiency and CO2 mass transfer rate

Measurement of Overall Volumetric Mass Transfer Coefficients for Carbon Dioxide in a Well-Mixed Reactor Using a pH Probe

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