Non-thermal Plasma as an Innovative Option for the Abatement of Volatile Organic Compounds: a Review

Spatiotemporal Distribution of PM2.5 and O3 and Their Interaction During the Summer and Winter Seasons in Beijing, China

“…O 3 is regarded as a secondary pollutant, primarily produced through a series of complex chemical reactions between Volatile Organic Compounds (VOCs) and nitrogen oxides (NO X ) under solar radiation in the wavelength range of 200 to 300 nm [16,17]. The formation of O 3 is a very complicated process which is affected by many factors, including precursor emissions (e.g., NO X, CO, and VOCs), local climate conditions (e.g., temperature, relative humidity, solar radiation, and wind direction and speed), and atmospheric chemical processes [18][19][20][21]. Fine particulate matter with an aerodynamic diameter of less than 2.5 µm (PM 2.5 ) can scatter and/or absorb solar radiation and influence the surface radiation budget [22], and these scattering and/or absorbing properties are inherently related to its chemical composition.…”

A Review about the Recent Advances in Selected NonThermal Plasma Assisted Solid–Gas Phase Chemical Processes

“…One of the drawbacks of NTPs for VOCs abatement is the potential formation of unwanted byproducts, due to the partial conversion of the initial compounds [144,145]. The increase of the discharge power can help in preventing this formation, but it results in an increased energy consumption.…”

“…In the former, the catalyst is directly located into the NTP reactor, which can be filled with the catalyst either totally (as in a packed-bed or monolithic reactor) [148][149][150][151] or partially (as in the hybrid reactor) [152][153][154]. In the last decade, different reviews have been published regarding the combined use of NTP and catalysts in the abatement of the several VOCs categories; all the reviews have considered all the main features, including reactor configuration, catalysts typology, catalyst placement, discharge power, number of electrodes [9,[142][143][144][155][156][157][158][159][160]. The analysis of these reviews evidenced the enormous interest of the scientific community towards the issue of the VOCs abatement by means of the catalytic NTP-assisted oxidation processes, especially by using packed bed or DBD reactors.…”

Integrated process for the removal of indoor VOCs from food industry manufacturing: Elimination of Butane-2,3-dione and Heptan-2-one by cold plasma-photocatalysis combination

“…AOPs such as photocatalysis [4,5], cold plasma [2,[6][7][8] and catalytic ozonation [9,10], based on ozone and/or free reactive species (atomic oxygen, peroxide ions and hydroxyl radicals), appear as innovative J o u r n a l P r e -p r o o f technologies to overcome limitations encountered by traditional processes. However, each method used alone can present some limitations: (i) accumulation of residues on the catalyst surface leads to a gradual decrease in photocatalytic activity, which regularly requires a regeneration step [11][12][13] and (ii) a low CO2 selectivity was observed via plasma treatment and also (iii) undesirable by-product formation (carbon monoxide CO and ozone O3) [14,15], each of them constitutes significant limitations which limit single mode usage. Therefore, it is better to associate photocatalysis and plasma together to ensure (i) high treatment efficiency and (ii) overcome existing disadvantages [16][17][18][19][20][21][22].…”