Adsorption of Bisphenol A onto β-Cyclodextrin-Based Nanosponges and Innovative Supercritical Green Regeneration of the Sustainable Adsorbent

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dc.contributor.authorSalgin, Ugur
dc.contributor.authorAlomari, Ismail
dc.contributor.authorSoyer, Nagihan
dc.contributor.authorSalgin, Sema
dc.date.accessioned2025-05-04T16:45:40Z
dc.date.available2025-05-04T16:45:40Z
dc.date.issued2025
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractBisphenol A is a widely recognized endocrine disruptor that persists in ecosystems, harms aquatic organisms, and contributes to ecological degradation, raising global environmental concerns. Numerous studies have explored beta-cyclodextrin-based adsorbents for Bisphenol A removal; however, their regeneration remains a major challenge, often relying on energy-intensive processes and excessive use of organic solvents. In this study, Bisphenol A was selected as a model pollutant, and its adsorption onto beta-cyclodextrin nanosponges was investigated. After adsorption, Bisphenol A was efficiently recovered from the saturated beta-cyclodextrin nanosponges using an innovative and sustainable supercritical CO2-based green process, which simultaneously regenerated the adsorbent. The adsorption process achieved an efficiency of 95.51 +/- 0.82% under optimized conditions (C-0 = 150 mg/L, m(beta-CDNS) = 0.15 g, T = 25 degrees C, and N = 200 rpm), with a maximum adsorption capacity of 47.75 +/- 0.28 mg/g. The regeneration process achieved over 99% efficiency at 60 degrees C and 300 bar, with 10% (v/v) ethanol as a co-solvent, nearly fully restoring the adsorbent's performance. Unlike conventional regeneration techniques, this green approach eliminates the need for environmentally harmful organic solvents while preserving the adsorbent's structural integrity, making it a highly efficient and sustainable alternative. This study is the first to demonstrate the effective application of supercritical CO2-based regeneration for beta-cyclodextrin nanosponges in Bisphenol A removal, providing a scalable and environmentally sustainable solution for wastewater treatment. Furthermore, characterization analyses confirmed that the adsorbent retained its chemical and morphological stability after adsorption and regeneration.
dc.identifier.doi10.3390/polym17070856
dc.identifier.issn2073-4360
dc.identifier.issue7
dc.identifier.pmid40219247
dc.identifier.scopus2-s2.0-105002370568
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.3390/polym17070856
dc.identifier.urihttps://hdl.handle.net/20.500.12418/35183
dc.identifier.volume17
dc.identifier.wosWOS:001465426500001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherMDPI
dc.relation.ispartofPolymers
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250504
dc.subjectBisphenol A
dc.subjectbeta-Cyclodextrin nanosponges
dc.subjectadsorption
dc.subjectsupercritical CO2-based green regeneration
dc.subjectsustainable adsorbent materials
dc.titleAdsorption of Bisphenol A onto β-Cyclodextrin-Based Nanosponges and Innovative Supercritical Green Regeneration of the Sustainable Adsorbent
dc.typeArticle

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