Naslov
Application of Candida parapsilosis in Biodegradation of UV/S2O82--pretreated MP-PS

Autori
Bule Možar, Kristina ; Miloloža, Martina ; Martinjak, Viktorija ; Cvetnić, Matija ; Ukić, Šime ; Bolanča, Tomislav ; Kučić Grgić, Dajana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Application of Candida parapsilosis in Biodegradation of UV/S2O82--pretreated MP-PS / Teparić, Renata ; Leboš Pavuc, Andreja ; Kifer, Domagoj - Zagreb : Hrvatsko mikrobiološko društvo, 2013, 95-95

Skup
Power of Microbes in Industry and Environment

Mjesto i datum
Poreč, Hrvatska, 15.05.2023. - 18.05.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
biodegradation ; AOP ; polystyrene ; microplastics

Sažetak
Microplastic (MP), particles ranging in size from 1 μm to 5 mm, are of concern due to their ubiquity in the environment. MP have harmful effects on living organisms and the environment in general. Various methods are being explored to remove these particles from the environment. In this study, polystyrene microplastic (MP-PS) were pretreated with UV/S2O82- and then used in a biodegradation process with the yeast Candida parapsilosis. The optimal UV/S2O82- conditions were determined using a full factorial experimental design with three parameters (pH of the medium, S2O82- oxidant concentration, and exposure time) in three levels. Before and after each process, the MP-PS particles were characterized by FTIR spectroscopy. After processing the data, the optimal conditions for the degradation of MP-PS by the UV/S2O82- process are the exposure time of 83.06 min at a concentration of S2O82- of 9.72 mM and a pH of the medium of 7.45. After the pretreatment of MP-PS under the above conditions, the processed MP was used for the biodegradation process, and a biodegradation experiment was also conducted with MP-PS, which had not been pretreated. The biodegradation experiments lasted for 30 days. During the experiment, the number of live yeast cells (CFU) and the concentration of total, organic and inorganic carbon (TC, TOC and TIC) were monitored. Considering the change in CFU over 30 days, it was concluded that biodegradability was improved by pretreatment of PS.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Interdisciplinarne tehničke znanosti

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