Miniaturizing wet scrubbers for aerosolized droplet capture

التفاصيل البيبلوغرافية
العنوان: Miniaturizing wet scrubbers for aerosolized droplet capture
المؤلفون: Ashleigh B. Theberge, Jiayang He, John Scott Meschke, Tammi L. van Neel, Ravi Sankar Vaddi, Angelo Q.W. Ong, Anthony Tang, Jean Berthier, Erwin Berthier, Ulri N. Lee, Fang Yun Lim, Jian Wei Khor, Igor Novosselov
المصدر: Anal Chem
بيانات النشر: Cold Spring Harbor Laboratory, 2021.
سنة النشر: 2021
مصطلحات موضوعية: Aerosols, Pollution, Wet scrubber, Chemistry, business.industry, media_common.quotation_subject, Indoor bioaerosol, Air Microbiology, Baffle, Particulates, Article, Analytical Chemistry, Aerosol, Humans, Environmental science, Particulate Matter, Relative humidity, Particle Size, Process engineering, business, Environmental Monitoring, Levivirus, media_common, Bioaerosol
الوصف: Aerosols dispersed and transmitted through the air (e.g., particulate matter pollution, 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, 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, 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 into water droplets. 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 proof-of-concept for aerosol capture into a liquid medium, 0.5-3 µm model particles were used to evaluate aerosol capture efficiency. Finally, we demonstrate the device can capture and keep a bioaerosol (bacteriophage MS2) viable for downstream analysis.
DOI: 10.1101/2021.03.23.436614
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3393709c03f65de9f964762812a1bbd
https://doi.org/10.1101/2021.03.23.436614
Rights: OPEN
رقم الانضمام: edsair.doi.dedup.....f3393709c03f65de9f964762812a1bbd
قاعدة البيانات: OpenAIRE
الوصف
DOI:10.1101/2021.03.23.436614