Efficient removal of indoor particulate matter using water microdroplets generated by a MHz-frequency ultrasonic atomizer

Kim, Jeongju; Kim, Jeong Jae; Lee, Sang Joon

doi:10.1016/j.buildenv.2020.106797

Cited by 23 publications

(5 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To tackle these issues, many novel strategies have been applied to modify the wet scrubbing-based collector, including twin fluid atomization, droplet charging, high-pressure spray, and ultrasonic microdroplet generation. [194][195][196] Recently, a portable and battery powered wet-scrubber device was developed for collecting airborne pathogens. 191 This device generated a mist of 4 mm liquid droplets in a non-linear flowing path.…”

Section: Liquid Phase Sampling Approachesmentioning

confidence: 99%

On-site airborne pathogen detection for infection risk mitigation

Qiu,

Zhang,

deMello

et al. 2023

Chem. Soc. Rev.

View full text Add to dashboard Cite

show abstract

Section: Liquid Phase Sampling Approachesmentioning

confidence: 99%

On-site airborne pathogen detection for infection risk mitigation

Qiu,

Zhang,

deMello

et al. 2023

Chem. Soc. Rev.

View full text Add to dashboard Cite

show abstract

“…Afterward, the ultrasonic atomization industry developed at a high speed. Currently, there are three main types of ultrasonic atomizers, namely, surface acoustic wave (SAW) atomizers [10] , [11] , [12] , static mesh atomizers [13] , [14] , [15] and dynamic mesh atomizers [16] , [17] , [18] , which are widely used for the conventional atomization of water, liquid fuels and detergents [19] , [20] , [16] , [21] , [22] .…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric atomization of liquids with dynamic viscosities up to 175 cP at room temperature

Xie

Zeng

Gui

et al. 2023

Ultrasonics Sonochemistry

View full text Add to dashboard Cite

“…Alternatively, an attractive method for generating liquid microdroplets is ultrasonic atomizers due to their compact size and use in existing consumer products such as home humidifiers. Recent studies using ultrasonic atomizers to generate sprays of liquid microdroplets showed a decrease in PM 2.5 and PM 10 concentration over time when the microdroplets were injected near burning incense …”

Section: Introductionmentioning

confidence: 99%

Miniaturizing Wet Scrubbers for Aerosolized Droplet Capture

et al. 2021

View full text Add to dashboard Cite

Aerosols dispersed and transmitted through the air (e.g., particulate matter pollution and bioaerosols) are ubiquitous and one of the leading causes of adverse health effects and disease transmission. A variety of sampling methods (e.g., filters, cyclones, and impactors) have been developed to assess personal exposures. However, a gap still remains in the accessibility and ease-of-use of these technologies for people without experience or training in collecting airborne samples. Additionally, wet scrubbers (large non-portable industrial systems) utilize liquid sprays to remove aerosols from the air; the goal is to "scrub" (i.e., clean) the exhaust of industrial smokestacks, not collect the aerosols for analysis. Inspired by wet scrubbers, we developed a device fundamentally different from existing portable air samplers by using aerosolized microdroplets to capture aerosols in personal spaces (e.g., homes, offices, and schools). Our aerosol-sampling device is the size of a small teapot, can be operated without specialized training, and features a winding flow path in a supersaturated relative humidity environment, enabling droplet growth. The integrated open mesofluidic channels shuttle coalesced droplets to a collection chamber for subsequent sample analysis. Here, we present the experimental demonstration of aerosol capture in water droplets. An iterative study optimized the non-linear flow manipulating baffles and enabled an 83% retention of the aerosolized microdroplets in the confined volume of our device. As a proofof-concept for aerosol capture into a liquid medium, 0.5−3 μm model particles were used to evaluate aerosol capture efficiency. Finally, we demonstrate that the device can capture and keep a bioaerosol (bacteriophage MS2) viable for downstream analysis.

show abstract

Efficient removal of indoor particulate matter using water microdroplets generated by a MHz-frequency ultrasonic atomizer

Cited by 23 publications

References 63 publications

On-site airborne pathogen detection for infection risk mitigation

On-site airborne pathogen detection for infection risk mitigation

Piezoelectric atomization of liquids with dynamic viscosities up to 175 cP at room temperature

Miniaturizing Wet Scrubbers for Aerosolized Droplet Capture

Contact Info

Product

Resources

About