{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T03:29:27Z","timestamp":1790825367565,"version":"4.1.0"},"reference-count":97,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2025,3,23]],"date-time":"2025-03-23T00:00:00Z","timestamp":1742688000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Bisphenol 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 \u03b2-cyclodextrin\u2013based 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 \u03b2-cyclodextrin nanosponges was investigated. After adsorption, Bisphenol A was efficiently recovered from the saturated \u03b2-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 \u00b1 0.82% under optimized conditions (C0 = 150 mg\/L, m\u03b2-CDNS = 0.15 g, T = 25 \u00b0C, and N = 200 rpm), with a maximum adsorption capacity of 47.75 \u00b1 0.28 mg\/g. The regeneration process achieved over 99% efficiency at 60 \u00b0C and 300 bar, with 10% (v\/v) ethanol as a co-solvent, nearly fully restoring the adsorbent\u2019s performance. Unlike conventional regeneration techniques, this green approach eliminates the need for environmentally harmful organic solvents while preserving the adsorbent\u2019s 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 \u03b2-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.<\/jats:p>","DOI":"10.3390\/polym17070856","type":"journal-article","created":{"date-parts":[[2025,3,25]],"date-time":"2025-03-25T12:18:52Z","timestamp":1742905132000},"page":"856","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Adsorption of Bisphenol A onto \u03b2-Cyclodextrin\u2013Based Nanosponges and Innovative Supercritical Green Regeneration of the Sustainable Adsorbent"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5683-7569","authenticated-orcid":false,"given":"U\u011fur","family":"Salg\u0131n","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering, Faculty of Engineering, Sivas Cumhuriyet University, 58140 Sivas, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u0130smail","family":"Alomari","sequence":"additional","affiliation":[{"name":"Abu Dhabi National Oil Company, Abu Dhabi P.O. Box 303, United Arab Emirates"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1342-2037","authenticated-orcid":false,"given":"Nagihan","family":"Soyer","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering, Faculty of Engineering, Sivas Cumhuriyet University, 58140 Sivas, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6354-3553","authenticated-orcid":false,"given":"Sema","family":"Salg\u0131n","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering, Faculty of Engineering, Sivas Cumhuriyet University, 58140 Sivas, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,3,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"119322","DOI":"10.1016\/j.watres.2022.119322","article-title":"Efficient capture of endocrine-disrupting compounds by a high-performance nanofiltration membrane for wastewater treatment","volume":"227","author":"Liu","year":"2022","journal-title":"Water Res."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"139538","DOI":"10.1016\/j.chemosphere.2023.139538","article-title":"The influence of magnetic particle incorporation on bisphenol A removal by \u03b2-cyclodextrin-derived sorbent","volume":"338","author":"Wikarska","year":"2023","journal-title":"Chemosphere"},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Gong, Y., Su, J., Li, M., Zhu, A., Liu, G., and Liu, P. 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