Application of acoustic agglomeration for removing sulfuric acid mist from air stream

Sadighzadeh, A.; Mohammadpour, Hassan; Omidi, Leila; Jafari, Mohammad Javad

doi:10.1016/j.serj.2017.09.002

Cited by 11 publications

(7 citation statements)

References 9 publications

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“…It was previously reported thatin the presence of a strong sound fieldmicroparticles undergo so-called acoustic agglomeration; i.e., their movements are affected in such a way that the microparticles approach one another. − In fact, acoustic agglomeration is an effective way to remove dust, particles, and droplets by using generated sound waves. − Both theoretical and experimental studies indicate that the sound waves with high sound pressure level (∼100 dB) and low frequency (<500 Hz) have a carrying effect on microparticles. ,,, In the present study involving ESI microdroplets, the effect was noticeable when the sound pressure level was above 100 dB and the frequency was below 400 Hz (cf. Figure S18).…”

Section: Resultsmentioning

confidence: 61%

Tuning Electrospray Ionization with Low-Frequency Sound

Wang

Prabhu

Hsu

et al. 2022

J. Am. Soc. Mass Spectrom.

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Electrospray ionization (ESI) mass spectrometry (MS) is one of the key techniques used in biomolecular analysis nowadays. It relies on formation of polydisperse microdroplets, which undergo desolvation and liberate ions to the gas phase. Here we demonstrate low-frequency-sound-modulated ESI for analysis of biomolecules. By using a low-frequency (50–350 Hz) sound, it is possible to deflect electrospray microdroplets toward the mass spectrometer’s orifice. Microdroplets of different sizes are deflected to a different extent leading to a partial size segregation. This effect leads to either an increase or decrease of MS signal intensity as well as signal-to-noise ratio. It also affects the selectivity of the ESI-MS analysis. The observations are rationalized by taking into account different pathways of ion formation and the likelihood of deflecting microdroplets of certain size. The online ESI-MS observations are supported with offline shadowgraphs obtained at varied sound frequencies, signal amplitudes, and phase shifts.

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Section: Resultsmentioning

confidence: 61%

Tuning Electrospray Ionization with Low-Frequency Sound

Wang

Prabhu

Hsu

et al. 2022

J. Am. Soc. Mass Spectrom.

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“…Yang, 27 for example, conducted experiments on the use of low-frequency acoustic waves for the removal of oil droplets in gas, noting an increase in the removal efficiency of 0.3–5 μm micro-oil droplets by over 20%. Exploring diverse application environments, Sadighzadeh A 28 proposed using acoustic agglomeration for acidic droplet removal in sulfuric acid mist. In the 0.4–20 μm droplet range, the maximum acoustic agglomeration efficiency achieved was 86%, demonstrating its potential as an effective anticorrosion strategy for gas-entrained acids.…”

Section: Development Of Acoustic Agglomeration Technologymentioning

confidence: 99%

“…26 Regarding droplet agglomeration, some researchers have investigated relevant application scenarios. Yang, 27 for example, conducted experiments on the use of low-frequency acoustic waves for the removal of oil droplets in gas, noting an increase in the removal efficiency of 0.3−5 μm micro-oil droplets by over 20%. Exploring diverse application environments, Sadighzadeh A 28 proposed using acoustic agglomeration for acidic droplet removal in sulfuric acid mist.…”

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confidence: 99%

Review of Acoustic Agglomeration Technology Research

Zhang,

Deng,

Luo

et al. 2024

ACS Omega

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Acoustic agglomeration is employed as a precursor technique that modifies the sound field of fine particles to increase their size, thereby facilitating more efficient emission control. This paper reviews progress in the field of acoustic agglomeration technology, clarifies the mechanisms at play within the acoustic agglomeration process, and outlines its applicability in both gas−liquid and gas−solid phases. Furthermore, it analyzes the factors impacting the efficacy of acoustic agglomeration, summarizes the numerical simulation research of acoustic agglomeration, and proposes directions for technological enhancement.

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“…Several studies have been conducted to remove sulfuric acid mist, such as the acoustic agglomeration, wet flue gas desulfurization (WFGD) system with double scrubbers, and stacking polymer microspheres matrix [9][10][11][12]. It has been demonstrated that the acid mist inhibitor is an effective additive to suppress the generation of acid mist.…”

Section: Introductionmentioning

confidence: 99%

An environmentally friendly and high current efficiency acid mist inhibitor for zinc electrowinning

Chen

Gao

et al. 2023

Mater. Res. Express

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Acid mist inhibitor is an effective additive for suppressing the generation of acid mist during electrowinning process. However, the traditional acid mist inhibitor has a low current efficiency, leading to high energy consumption. Thus, novel acid mist inhibitors are crucial for the development of the electrowinning industry. In this paper, three new acid mist inhibitors (Famigo® FS-101, Famigo® FS-301, and Famigo® FS-401) are used in zinc electrowinning process, while the mechanism of action in suppressing the generation of acid mist is characterized by the volume of bubble attached on the cathode surface and surface tension. The impacts of the concentration of the acid mist inhibitors on the bath voltage, current efficiency, power consumption, and electrochemical properties, as well as the enhancement mechanism on the current efficiency, are studied. The obtained results demonstrate that an adequate concentration of Famigo®FS-101, Famigo®FS-301, and Famigo®FS-401 allows to increase the cathode current efficiency and decrease the energy consumption, from 3219 kWh/t in zinc electrolyzer to 2948 kWh/t，3090 kWh/t, and 2884 kWh/t using a concentration of 5 mg/L of Famigo®FS-101, Famigo®FS-301, and Famigo®FS-401, respectively. The proposed inhibitors have high acid mist inhibition efficiency and current efficiency in the zinc electrowinning process. Furthermore, if engineered, they may contribute to the development of the electroposition industry.

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Application of acoustic agglomeration for removing sulfuric acid mist from air stream

Cited by 11 publications

References 9 publications

Tuning Electrospray Ionization with Low-Frequency Sound

Tuning Electrospray Ionization with Low-Frequency Sound

Review of Acoustic Agglomeration Technology Research

An environmentally friendly and high current efficiency acid mist inhibitor for zinc electrowinning

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