Surface properties of microalgal biomass and microplastics : exploring point of zero-charge and contact angle

Šunta, Urška (avtor), Matijaković Mlinarić, Nives (avtor), Šariri, Sara (avtor), Griessler Bulc, Tjaša (avtor), Bavcon Kralj, Mojca (avtor)

The surface properties of microalgal biomass and microplastics, focusing on the point of zero charge (PZC) and water contact angle (CA), were investigated. Microalgae, particularly Chlorella vulgaris and mixed microalgal consortia, were cultivated and analyzed for their surface characteristics. Oven-dried and freeze-dried samples exhibited varying degrees of hydrophilicity, with freeze-dried microalgal consortia exhibiting more hydrophilic surface. The PZC values indicated a higher density of negative charges on the surface of C. vulgaris compared to the microalgal consortia biomass. Microplastics (MPs)from agricultural mulch films, including biodegradable and non-degradable types, were also examined. Results showed that naturally aged MPs exhibited more hydrophilic surfaces compared to their pristine counterparts. The PZC values of microplastics varied, with some showing neutral to slightly negative charges at environmental pH levels. The findings underscore the importance of surface characterization in understanding the sorption mechanisms of contaminants.

• Jezik: Angleški jezik
• Ključne besede: microplastics, microalgal biomass, surface properties, point of zero-charge, water contact angle, sorption
• Vrsta gradiva: Znanstveno delo
• Tipologija: 1.08 - Objavljeni znanstveni prispevek na konferenci
• Organizacija: ZF - Zdravstvena fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: Str. 24-31
• PID: 20.500.12556/RUL-168398
• UDK: 502.131.1
• DOI: 10.55295/PSL.12.2025.II2
• COBISS.SI-ID: 232274435
• Datum objave v RUL: 11.04.2025

Gradivo je del monografije

• Naslov: Socratic Lectures : 12th international symposium, Ljubljana, January 11, 2025
• Uredniki: Veronika Kralj-Iglič, Anna Romolo, Yelena Istileulova
• Kraj izida: Ljubljana
• Založnik: University of Ljubljana Press
• Leto izida: 2025
• ISBN: 978-961-297-551-7
• COBISS.SI-ID: 228834307

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.

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P3-0388-2022
• Naslov: Mehanizmi varovanja zdravja

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: J2-4427-2022
• Naslov: Algne tehnologije za zelene produkte - ALGreen