Academic Journal
The Potential of AOP Pretreatment in the Biodegradation of PS and PVC Microplastics by Candida parapsilosis
| العنوان: | The Potential of AOP Pretreatment in the Biodegradation of PS and PVC Microplastics by Candida parapsilosis |
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| المؤلفون: | Kristina Bule Možar, Martina Miloloža, Viktorija Martinjak, Magdalena Ujević Bošnjak, Marinko Markić, Tomislav Bolanča, Matija Cvetnić, Dajana Kučić Grgić, Šime Ukić |
| المصدر: | Water, Vol 16, Iss 10, p 1389 (2024) |
| بيانات النشر: | MDPI AG |
| سنة النشر: | 2024 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | microplastics, polystyrene, poly(vinyl chloride), advanced oxidation, UV-C/H 2 O 2, UV-C/S 2 O 8 2−, Hydraulic engineering, TC1-978, Water supply for domestic and industrial purposes, TD201-500 |
| الوصف: | Microplastics are an emerging class of recalcitrant organic pollutants that are of general scientific and public interest nowadays. It would be ideal to remove microplastics from the environment through biodegradation, as biodegradation is a highly ecological and economically acceptable approach. Unfortunately, the efficiency of biodegradation of conventional plastic polymers is low. The application of a suitable pretreatment could increase the efficiency of biodegradation. In this study, the applicability of UV-C/H 2 O 2 and UV-C/S 2 O 8 2− advanced oxidation processes as pretreatments for the biodegradation of polystyrene and poly(vinyl chloride) microplastics by the yeast Candida parapsilosis was investigated. For the investigated range (pH 4–10, peroxide concentration up to 20 mM and treatment duration up to 90 min), the UV-C/H 2 O 2 process proved to be more effective in degrading polystyrene microplastics, while the UV-C/S 2 O 8 2− process was more efficient at degrading poly(vinyl chloride) microplastics. Samples pretreated under optimal conditions (90 min treatment time at a pH of 5.7 and H 2 O 2 concentration of 20.0 mM for polystyrene samples; 90 min treatment time at a pH of 8.6 and S 2 O 8 2− concentration of 11.1 mM for poly(vinyl chloride) samples) were subjected to biodegradation by Candida parapsilosis . The biodegradation conditions included an agitation speed of 156 rpm and an initial pH of 5.7 for the experiments with the polystyrene samples, while an agitation speed of 136 rpm and an initial pH of 4.9 were used for the poly(vinyl chloride) experiments. The initial value of the optical density of the yeast suspension was 1.0 in both cases. The experiments showed a positive effect of the pretreatment on the number of yeast cells on the surface of the microplastics. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2073-4441 |
| Relation: | https://www.mdpi.com/2073-4441/16/10/1389; https://doaj.org/toc/2073-4441; https://doaj.org/article/3c517a56a93d476997805d603dcb7b6a |
| DOI: | 10.3390/w16101389 |
| الاتاحة: | https://doi.org/10.3390/w16101389 https://doaj.org/article/3c517a56a93d476997805d603dcb7b6a |
| رقم الانضمام: | edsbas.3EBD4D15 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 20734441 |
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| DOI: | 10.3390/w16101389 |