Ormosil hybrid coatings as a sustainable antibiofouling solution for microalgae cultivation in tubular photobioreactors

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dc.contributor.authorBelen, Sema Nur
dc.contributor.authorIpsalali, Ozde
dc.contributor.authorGunes, Kaniye
dc.contributor.authorKucuker, Mehmet Ali
dc.contributor.authorCengiz, Ugur
dc.date.accessioned2026-02-03T12:02:42Z
dc.date.available2026-02-03T12:02:42Z
dc.date.issued2026
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThis study demonstrated the potential of citric acid-APTES (Ormosil) coatings as an effective antifouling strategy to reduce biofilm formation in tubular photobioreactors used for microalgae cultivation. Among the tested coatings, CApTES2.7 exhibited superhydrophilic behavior in air and superoleophobic behavior underwater, significantly reducing the adhesion of Chlorella vulgaris compared to uncoated glass surfaces. Light transmission experiments and microscopic analyses showed that biofilm accumulation on coated surfaces decreased by more than 50 %, maintaining optical clarity within the reactor. Thermodynamic, DLVO, and XDLVO modeling supported these findings, indicating lower adhesion energies for algal cells on Ormosil-coated surfaces, consistent with their experimental antifouling performance. The application of CApTES2.7 coating in tubular PBR systems resulted in a 54.5 % increase in light transmittance compared to uncoated systems, thereby improving the photonic environment available for microalgal growth. Additionally, no chemical cleaning was required between cultivation cycles in coated reactors, demonstrating potential for reducing operational costs and water consumption in large-scale systems. In conclusion, this study presents an environmentally friendly and sustainable approach to overcoming biofilm-induced light attenuation-one of the main bottlenecks in industrial photobioreactors. Ormosil-based coatings not only extend the service life of PBRs but also enhance the economic feasibility of microalgae-based bioprocesses for biofuel, bioplastics, and high-value biomolecule production.
dc.description.sponsorshipScientific and Technological Research Council of Turkiye (TUBITAK) [220M013]
dc.description.sponsorshipTUBITAK
dc.description.sponsorshipThis study was supported by the Scientific and Technological Research Council of Turkiye (TUBITAK) under Grant No. 220M013. The authors gratefully acknowledge TUBITAK for its financial support. The authors would like to thank the Central Laboratory of Canakkale Onsekiz Mart University for providing SEM, and AFM facilities. The authors also sincerely thank Dr. Berat Z. Haznedaroglu from Bogazici University for his valuable support in providing algal strains. The authors also acknowledge the assistance of an AI-based language tool for improving the English clarity and readability of the manuscript.
dc.identifier.doi10.1016/j.jece.2025.120984
dc.identifier.issn2213-2929
dc.identifier.issn2213-3437
dc.identifier.issue1
dc.identifier.scopus2-s2.0-105026754296
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jece.2025.120984
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34836
dc.identifier.volume14
dc.identifier.wosWOS:001658711200001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofJournal of Environmental Chemical Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260130
dc.subjectAntibiofouling
dc.subjectPhotobioreactors
dc.subjectC. vulgaris
dc.subjectOrmosil coatings
dc.subjectThermodynamic approach
dc.titleOrmosil hybrid coatings as a sustainable antibiofouling solution for microalgae cultivation in tubular photobioreactors
dc.typeArticle

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