Ethanol enrichment from ethanol–water mixtures using high frequency ultrasonic atomization

Kirpalani, Deepak M.; Suzuki, Kenji

doi:10.1016/j.ultsonch.2010.05.013

Cited by 26 publications

(10 citation statements)

References 9 publications

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“…As shown in Figures 3 and 4, the swirling curtain dust removal technology covers the processes of gravity settlement, inertial collision, interception and capture, electrostatic capture, Brownian diffusion, condensation and cyclone centrifugal separation. This is consistent with the previous studies [21][22][23].…”

Section: Design Of the Swirling Curtain Dust Collection Devicesupporting

confidence: 95%

Application and Research of Swirling Curtain Dust Collection Technology in Mines

Hao

et al. 2020

Applied Sciences

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During the production process in mines, large amounts of dusts are produced. The dusts pose a potential hazard to the health and safety of miners. Traditional dust removal methods, such as ventilation, water sprays and foam technology, cannot completely solve the problem of dust pollution, due to low efficiency or high consumption of water or large resistance (>2000 Pa). Therefore, a swirling curtain dust collector (SCDC) was proposed to collect the dust in mines. The device was combined swirling atomization with spray curtain for dust removal. The performance of SCDC was investigated. According to the results, the optimum working condition of the device was: air pressure: 0.35 MPa, water volume: 30 L/h; liquid–gas ratio: 0.15 L/m3; air speed: 14–16 m/s. Under these operation parameters, the suppression efficiency of total dust and respirable dust were over 99.8% and 97%. The proposed device was applied at transfer stations of Luohe Metal Mine in Anhui, China. The application results showed that the dust concentration at the outlet of SCDC in the transfer station is lower than 20 mg/m3, which is stipulated by Chinese standard GB 28661-2012. The proposed device is expected to replace the traditional Venturi wet scrubber in mines.

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Section: Design Of the Swirling Curtain Dust Collection Devicesupporting

confidence: 95%

Application and Research of Swirling Curtain Dust Collection Technology in Mines

Hao

et al. 2020

Applied Sciences

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“…Previous reports have shown that droplet sizes produced by ultrasound from a liquid solution follow a normal distribution. 15,16,28 Yasuda et al 21 reported that at a solute concentration of 0.1 mole fraction, ultrasonic misting resulted in the median droplet diameters of 5.3, 4.4, 4.0, 4.4, and 4.8 μm for methanol, ethanol, 1-propanol, propylene glycol, and glycerol, respectively. This shows that the ultrasoundgenerated mist from various binary solutions produces mist with different median diameters.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Ultrasound-Assisted Nonthermal, Nonequilibrium Separation of Organic Molecules from Their Binary Aqueous Solutions: Effect of Solute Properties on Separation

Naidu

Kahraman

Feng

2021

ACS Sustainable Chem. Eng.

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The separation of organic molecules in downstream processes, such as distillation, plays a vital role in biobased chemical production. A comprehensive study was performed here using ultrasonic energy to separate 11 organic molecules from their binary aqueous solutions under nonthermal, nonequilibrium, and phase-change free conditions. A batch sonoseparator with a three-stage mist collection unit allowed direct analysis of ultrasound-generated mist with an HPLC/GC and differentiation and quantification of the vapor and mist. The results showed that the alcohols (1-butanol, ethanol, 1-propanol, and methanol) and acetone were enriched in the ultrasound-generated mist with enrichment ratios of 3.2–5. On the other hand, ethylene glycol, glycerol, γ-valerolactone (GVL), glucose, and sucrose were diluted with dilution ratios in the range of 2.04–15.7 in the mist and vapor generated by ultrasound (or concentrated in the bulk solution). No enrichment nor dilution of acetic acid was observed. The role of various physicochemical parameters such as dynamic viscosity, surface tension, Henry’s law of solubility constant, vapor pressure, and octanol–water partition coefficient in the enrichment was examined. The hydrophobicity of the organic molecules represented by the octanol–water partition coefficient was found to play a crucial role in determining the separation characteristics of the molecules in ultrasound-generated mist and vapor.

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“…Nevertheless, these atomizers are limited by power requirements and sizes, hindering portable use outside hospital settings 16 . In addition, pneumatic atomizers have poor performance in producing aerosol monodispersity or narrowly dispersed aerosols, and ultrasonic atomizers are relatively large, also have limitations on size control, and molecules will be damaged during the ultrasonic atomization process due to the cavitation effect 17 . To avoid cavitation, it is necessary to reduce the power or to operate at higher frequencies where the power required to induce cavitation is lower than that required for the onset of atomization.…”

Section: Introductionmentioning

confidence: 99%

“…There was a consensus that increasing the device frequency can effectively reduce the size of aerosol droplets and satellite droplets, but the frequency value of capillary wave has always been controversial. Nevertheless, there appears to be some controversy surrounding the adoption of the subharmonic frequency proposed by Lang, i.e., the capillary wave frequency f c is one-half of the excitation frequency f , many studies have also cited it to calculate the aerosol size 14 , 17 . This is due to the difficulty of accurately measuring the frequency at which capillary waves vibrate.…”

Section: Introductionmentioning

confidence: 99%

Experimental research on surface acoustic wave microfluidic atomization for drug delivery

Huang

et al. 2022

Sci Rep

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This paper demonstrates that surface acoustic wave (SAW) atomization can produce suitable aerosol concentration and size distribution for efficient inhaled lung drug delivery and is a potential atomization device for asthma treatment. Using the SAW device, we present comprehensive experimental results exploring the complexity of the acoustic atomization process and the influence of input power, device frequency, and liquid flow rate on aerosol size distribution. It is hoped that these studies will explain the mechanism of SAW atomization aerosol generation and how they can be controlled. The insights from the high-speed flow visualization studies reveal that it is possible by setting the input power above 4.17 W, thus allowing atomization to occur from a relatively thin film, forming dense, monodisperse aerosols. Moreover, we found that the aerosol droplet size can be effectively changed by adjusting the input power and liquid flow rate to change the film conditions. In this work, we proposed a method to realize drug atomization by a microfluidic channel. A SU-8 flow channel was prepared on the surface of a piezoelectric substrate by photolithography technology. Combined with the silicon dioxide coating process and PDMS process closed microfluidic channel was prepared, and continuous drug atomization was provided to improve the deposition efficiency of drug atomization by microfluidic.

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Ethanol enrichment from ethanol–water mixtures using high frequency ultrasonic atomization

Cited by 26 publications

References 9 publications

Application and Research of Swirling Curtain Dust Collection Technology in Mines

Application and Research of Swirling Curtain Dust Collection Technology in Mines

Ultrasound-Assisted Nonthermal, Nonequilibrium Separation of Organic Molecules from Their Binary Aqueous Solutions: Effect of Solute Properties on Separation

Experimental research on surface acoustic wave microfluidic atomization for drug delivery

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