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Naslov:UV light causes structural changes in microplastics exposed in bio-solids
Avtorji:ID Alavian Petroody, S. S. (Avtor)
ID Hashemi, Seyed Hossein (Avtor)
ID Škrlep, Luka (Avtor)
ID Mušič, Branka (Avtor)
ID Gestel, Cornelis A. M. van (Avtor)
ID Sever Škapin, Andrijana (Avtor)
Datoteke:URL URL - Izvorni URL, za dostop obiščite https://www.mdpi.com/2073-4360/15/21/4322
 
.pdf PDF - Predstavitvena datoteka, prenos (2,27 MB)
MD5: 48B58422006BDB640CF05640FFF3AE89
 
Jezik:Angleški jezik
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:Logo ZAG - Zavod za gradbeništvo Slovenije
Povzetek:Bio-solids (biological sludge) from wastewater treatment plants are a significant source of the emission of microplastics (MPs) into the environment. Weakening the structure of MPs before they enter the environment may accelerate their degradation and reduce the environmental exposure time. Therefore, we studied the effect of UV-A and UV-C, applied at 70 °C, on three types of MPs, polypropylene (PP), polyethylene (PE), and polyethylene terephthalate (PET), that are commonly found in sewage sludge, using three shapes (fibers, lines, granules). The MPs were exposed to UV radiation in bio-solid suspensions, and to air and water as control. The structural changes in and degradation of the MPs were investigated using Attenuated Total Reflectance–Fourier Transform Infrared Spectrometry (ATR-FTIR) and surface morphology was performed with SEM analysis. UV exposure led to the emergence of carbonyl and hydroxyl groups in all of the PP samples. In PE and PET, these groups were formed only in the bio-solid suspensions. The presence of carbonyl and hydroxyl groups increased with an increasing exposure time. Overall, UV radiation had the greatest impact on the MPs in the bio-solids suspension. Due to the surface-to-volume ratio of the tested samples, which influences the degradation rate, the fibers were more degraded than the other two plastic shapes. UV-A was slightly more effective at degrading the MPs than UV-C. These findings show that ultraviolet radiation in combination with an elevated temperature affects the structure of polymers in wastewater bio-solids, which can accelerate their degradation.
Ključne besede:microplastics, degradation, hydroxyl, carbonyl, ultraviolet light
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:04.11.2023
Založnik:Molecular Diversity Preservation International
Leto izida:2023
Št. strani:str. 1-16
Številčenje:Vol. 15, iss. 21, [article no.] 4322
PID:20.500.12556/DiRROS-17269 Novo okno
UDK:54
ISSN pri članku:2073-4360
DOI:10.3390/polym15214322 Novo okno
COBISS.SI-ID:171474691 Novo okno
Avtorske pravice:© 2023 by the authors. Licensee MDPI, Basel, Switzerland.
Opomba:Nasl. z nasl. zaslona; Opis vira z dne 9. 11. 2023;
Datum objave v DiRROS:14.11.2023
Število ogledov:1213
Število prenosov:465
Metapodatki:XML DC-XML DC-RDF
:
ALAVIAN PETROODY, S. S., HASHEMI, Seyed Hossein, ŠKRLEP, Luka, MUŠIČ, Branka, GESTEL, Cornelis A. M. van in SEVER ŠKAPIN, Andrijana, 2023, UV light causes structural changes in microplastics exposed in bio-solids. Polymers [na spletu]. 2023. Vol. 15, no. 21,  4322, p. 1–16. [Dostopano 18 april 2025]. DOI 10.3390/polym15214322. Pridobljeno s: https://dirros.openscience.si/IzpisGradiva.php?lang=slv&id=17269
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Gradivo je del revije

Naslov:Polymers
Skrajšan naslov:Polymers
Založnik:MDPI
ISSN:2073-4360
COBISS.SI-ID:517951257 Novo okno

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:J1-50014
Naslov:Effects of biodegradable microplastics on freshwater and terrestrial organisms
Akronim:MicroBIOplast
Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0273
Naslov:Gradbeni objekti in materiali

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:mikroplastika, degradacija, hidroksil, karbonil, ultravijolična svetloba


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