Experimental study of extraction fraction and mass transfer coefficient in a microchannel using butyl acetate/acetic acid/water chemical system

Fereydani, Arsalan Azimian; Azizi, Zoha

doi:10.1007/s10973-018-7360-2

Cited by 13 publications

(1 citation statement)

References 23 publications

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“…The k L a value in a bubble column can be estimated by quite a few empirical equations. For an MB column, most of them are empirical ,, and others have a theoretical basis. , Kawahara et al generated air MBs with diameters varying from 200 to 800 μm by a pressurized dissolution type generator and measured the k L a in am air MB column with a diameter of 0.3 m and a height of 2.0 m by the un-steady-state method. In addition, the relationship between k L μ L /σ and the Peclet number ( Pe ) was established by the fitting of test data, and the following k L a equation was proposed. where σ L is liquid surface tension, μ L is liquid dynamic viscosity, and a is specific gas–liquid interface area.…”

Section: Theorymentioning

confidence: 99%

Prediction and Experimental Study of Mass Transfer Properties of Micronanobubbles

Bai

Liu

Zhang

et al. 2021

Ind. Eng. Chem. Res.

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In order to study the mass transfer efficiency of micronanobubbles (MNBs), an equation of the volumetric mass transfer coefficient (k L a) was proposed based on theory and dimensionless numbers. It was verified by experimental data from different literature sources. Then, the k L a in an MNB column was measured under the conditions of different salt concentrations. The test results showed that the equation could successfully predict the k L a in an MNB column of not only this research but also other literature. In the MNB column, when the salt concentration increased from 0.0 to 3.0 g/L, the values of the Sauter mean bubble diameter (d BS ), gas holdup (ε), and specific gas−liquid interface (a) had remarkable changes. Salt coalescence suppression was the governing effect for the hydrodynamic variables, and it was more prominent for common bubbles than for MNBs. The value of the k L a in the MNB column was an order of magnitude larger than that in the common bubble column, and it was improved significantly in salt solution. Hydrodynamic variables were dominant effects of mass transfer. Overall, the prediction equation of the k L a provides a reference for the mass transfer rate calculation of MNBs.

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Section: Theorymentioning

confidence: 99%

Prediction and Experimental Study of Mass Transfer Properties of Micronanobubbles

Bai

Liu

Zhang

et al. 2021

Ind. Eng. Chem. Res.

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Dehydration of a Dilute Acetic Acid‐Water Mixture via Batch Heteroazeotropic Distillation

et al. 2021

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Dehydration via batch heteroazeotropic distillation emerges as a promising technology for the recovery of acetic acid (HAc) from dilute aqueous solutions. In this preliminary work, this process was studied with the aid of Aspen Batch Modeler®, using an acetic acid aqueous solution as the model feed instead of wood vinegar from biorefineries and n‐butyl acetate as the azeotropic entrainer. The non‐random two liquids (NRTL)‐virial Hayden‐O'Connell model (HOC) model was chosen to calculate the thermodynamic properties. The response surface methodology with Box‐Behnken design was successfully applied to obtain optimum process conditions, providing a dehydrated HAc product from the pot with high purity and recovery.

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Ultrasound and air‐disturbance‐based enhancement of spiral microchannel extraction of Cu²⁺

et al. 2021

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In this work, we evaluated the enhancement effect on the extraction of Cu 2+ from water by introducing ultrasound and air disturbance in a spiral microchannel device. We used 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (P507) as an extractant and used kerosene as a solvent. The effects of flow rate, temperature, initial pH of water, organic/aqueous phase ratio (O/A), the concentration of extractant, and the inner diameter of the pipe on the extraction of Cu 2+ were investigated in liquid-liquid micro-extraction (LLME), ultrasonic micro-extraction (UME), and liquid-liquid-gas micro-extraction (LLGME). We found that, at a similar extraction rate, the extraction capacity per unit of time of UME was five times that of LLME, and the extraction capacity per unit of time of LLGME was 10 times that of LLME. By comparing the effects of three methods on extracting Cu 2+ , we followed the following priority order: LLGME > UME > LLME. The results of three-stage extraction under optimum conditions were also studied. The results revealed that the highest extraction rate of the three methods could reach about 92% with the processing time of 72 seconds under optimal conditions.

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Experimental study of extraction fraction and mass transfer coefficient in a microchannel using butyl acetate/acetic acid/water chemical system

Cited by 13 publications

References 23 publications

Prediction and Experimental Study of Mass Transfer Properties of Micronanobubbles

Prediction and Experimental Study of Mass Transfer Properties of Micronanobubbles

Dehydration of a Dilute Acetic Acid‐Water Mixture via Batch Heteroazeotropic Distillation

Ultrasound and air‐disturbance‐based enhancement of spiral microchannel extraction of Cu²⁺

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Experimental study of extraction fraction and mass transfer coefficient in a microchannel using butyl acetate/acetic acid/water chemical system

Cited by 13 publications

References 23 publications

Prediction and Experimental Study of Mass Transfer Properties of Micronanobubbles

Prediction and Experimental Study of Mass Transfer Properties of Micronanobubbles

Dehydration of a Dilute Acetic Acid‐Water Mixture via Batch Heteroazeotropic Distillation

Ultrasound and air‐disturbance‐based enhancement of spiral microchannel extraction of Cu2+

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Product

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Ultrasound and air‐disturbance‐based enhancement of spiral microchannel extraction of Cu²⁺