Studying the fate of non-volatile organic compounds in a commercial plasma air purifier

Schmid, Stefan M.; Seiler, Cornelia; Gerecke, Andreas C.; Hächler, Herbert; Hilbi, Hubert; Frey, Joachim; Weidmann, Simon; Meier, Lukas; Berchtold, Christian; Zenobi, Renato

doi:10.1016/j.jhazmat.2013.04.021

Cited by 8 publications

(6 citation statements)

References 26 publications

(34 reference statements)

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“…The exploitation of plasma to treat the gaseous effluents released by waste management plants also was recently demonstrated . Several volatile organic compounds cause odor nuisances and these odorous substances can be removed using plasma treatment . For example, the elimination of organic sulfur compounds, such as carbon disulfide (CS 2 ) in air was achieved recently .…”

Section: Plasmas In Environmental Technologiesmentioning

confidence: 99%

Cold Physical Plasmas in the Field of Hygiene—Relevance, Significance, and Future Applications

Krämer

Bekeschus

Matthes

et al. 2015

Plasma Processes & Polymers

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Cold physical plasmas ignited a technological spark in industry, biotechnology, and medicine. Especially the field of hygiene benefited of the plasma's exceptional activity against pathogenic microorganisms. Together with plasma-based surface functionalization, these qualities are highly relevant in a variety of processes in health care, such as the decontamination or sterilization of medical devices, food, packaging materials, waste water, or indoor air. In medicine, plasma has proven to show promising antiseptic results on skin and mucosal membranes in infection-related diseases in dermatology and dentistry. This comprehensive review will discuss the current applications of cold plasma in the fields of hygiene, and will provide a promising outlook on many applications yet to come.

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Section: Plasmas In Environmental Technologiesmentioning

confidence: 99%

Cold Physical Plasmas in the Field of Hygiene—Relevance, Significance, and Future Applications

Krämer

Bekeschus

Matthes

et al. 2015

Plasma Processes & Polymers

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“…The DBD was initiated between these two electrodes. The device was operated with an alternating current [ 10 ] pulsed power supply. The power supply consisted of a step up transformer that produces a high voltage between the output terminals.…”

Section: Methodsmentioning

confidence: 99%

“…Most of these studies are focused on using plasma to treat surfaces. Plasma is used in many cases to inactivate odor causing Volatile Organic Compounds (VOC) [ 10 ]; including non-thermal plasma for the treatment of bioaerosols [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Involvement of multiple stressors induced by non-thermal plasma-charged aerosols during inactivation of airborne bacteria

et al. 2017

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A lab-scale, tunable, single-filament, point-to-point nonthermal dieletric-barrier discharge (DBD) plasma device was built to study the mechanisms of inactivation of aerosolized bacterial pathogens. The system inactivates airborne antibiotic-resistant pathogens efficiently. Nebulization mediated pre-optimized (4 log and 7 log) bacterial loads were challenged to plasma-charged aerosols, and lethal and sublethal doses determined using colony assay, and cell viability assay; and the loss of membrane potential and cellular respiration were determined using cell membrane potential assay and XTT assay. Using the strategies of Escherichia coli wildtype, over-expression mutant, deletion mutants, and peroxide and heat stress scavenging, we analyzed activation of intracellular reactive oxygen species (ROS) and heat shock protein (hsp) chaperons. Superoxide dismutase deletion mutants (ΔsodA, ΔsodB, ΔsodAΔsodB) and catalase mutants ΔkatG and ΔkatEΔkatG did not show significant difference from wildtype strain, and ΔkatE and ΔahpC was found significantly more susceptible to cell death than wildtype. The oxyR regulon was found to mediate plasma-charged aerosol-induced oxidative stress in bacteria. Hsp deficient E. coli (ΔhtpG, ΔgroEL, ΔclpX, ΔgrpE) showed complete inactivation of cells at ambient temperature, and the treatment at cold temperature (4°C) significantly protected hsp deletion mutants and wildtype cells, and indicate a direct involvement of hsp in plasma-charged aerosol mediated E. coli cell death.

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“…Specific developments were published in terms of material selection of the wire (tungsten, carbon), ionization electrode shape and thickness [82][83][84], or power control, e.g., continuous direct current, alternating current, or high frequency charging [80]. The collector can be arranged in a parallel plate configuration where the grounded plate alternates with a plate at high voltage or as a honeycomb.…”

Section: In-duct Systemmentioning

confidence: 99%

Electrostatic Precipitators as an Indoor Air Cleaner—A Literature Review

et al. 2020

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Many people spend most of their time in an indoor environment. There is a positive relationship between indoor environmental quality and the health, wellbeing, and productivity of occupants in buildings. The indoor environment is affected by pollutants, such as gases and particles. Pollutants can be removed from the indoor environment in various ways. Air cleaning devices are commonly marketed as benefitting the removal of air pollutants and consequently, improving indoor air quality. Depending on the type of cleaning technology, air cleaners may generate undesired and toxic by-products. Different air filtration technologies such as electrostatic precipitators have been introduced to the market. The electrostatic precipitator (ESP) has been used in buildings because it can remove particles while only causes low pressure drops. Electrostatic precipitators can be either in-duct or standalone units. This review aims to give an overview of ESP use, methods for testing this product, the performance of existing ESPs in removing pollutants, their by-products, and the existing market for ESPs.

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Studying the fate of non-volatile organic compounds in a commercial plasma air purifier

Cited by 8 publications

References 26 publications

Cold Physical Plasmas in the Field of Hygiene—Relevance, Significance, and Future Applications

Cold Physical Plasmas in the Field of Hygiene—Relevance, Significance, and Future Applications

Involvement of multiple stressors induced by non-thermal plasma-charged aerosols during inactivation of airborne bacteria

Electrostatic Precipitators as an Indoor Air Cleaner—A Literature Review

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