Degradation of nano-sized polystyrene plastics by ozonation or chlorination in drinking water disinfection processes

Abundance and Characterization of Microplastics in Main Urban Ditches Across the Bahir Dar City, Ethiopia

“…Moreover, the absorption peaks of PS around 701, 761, 1,451, and 1,499 cm −1 correspond to the C-H bond stretching of the aromatic rings (Berruezo et al, 2014). The characteristic peaks at 1745, 1,190, and 1,080 cm −1 are an assignment for the C=O stretching vibration of carboxylic and ketone groups, cyclic olefin copolymer stretching vibration, and-CO-stretching vibration, respectively (Li et al, 2022). The broad band around 3,450 cm −1 for the PVC plastic particles is attributed to the hydroxyl (O-H) stretching.…”

Insights into the removal of microplastics and microfibres by Advanced Oxidation Processes

“…In the same investigation, GC-MS spectra confirmed the formation of intermediate products (such as formic acid, phenol, acetophenone, hydroquinone, methylbenzaldehyde, methyl acetophenone, and phenylpropionic acid) during the degradation steps; therefore, PS were not totally mineralized. The ozonation treatment reached 42.7 % mineralization in 240 min (Li et al, 2022).…”

“…The oxidant concentration and reaction time were relevant in the absorption of ozone by the PE MPs. The challenging removal of small MPs was addressed by ozonation, specifically for degrading nano-sized PS (≤200 nm) (Li et al, 2022). The treatment process was performed in a semi-continuous flow mode at initial pH 6.4, with 2.5 μm/L of PS and ozone dosage of 4.1 mg/L.…”

Methodologies to characterize, identify and quantify nano- and sub-micron sized plastics in relevant media for human exposure: a critical review

“…Contaminated food and drinking water is one of the greatest concerns in the public media. 25,26 It has been reported that exposure routes from packaging could lead to contamination of food as well. 27,28 The air contamination with MNPs has multiple sources, such as bers from clothes and abrasion of materials (e.g.…”

“…Contaminated food and drinking water is one of the greatest concerns in the public media. 25,26 It has been reported that exposure routes from packaging could lead to contamination of food as well. 27,28…”