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http://hdl.handle.net/1942/43244
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DC Field | Value | Language |
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dc.contributor.author | Demir-Yilmaz, Irem | - |
dc.contributor.author | PAPPA, Michaela | - |
dc.contributor.author | LAMA, Sanjaya | - |
dc.contributor.author | Guiraud, Pascal | - |
dc.contributor.author | VANDAMME, Dries | - |
dc.contributor.author | Formosa-Dague, Cecile | - |
dc.date.accessioned | 2024-06-24T06:54:55Z | - |
dc.date.available | 2024-06-24T06:54:55Z | - |
dc.date.issued | 2024 | - |
dc.date.submitted | 2024-06-24T06:48:15Z | - |
dc.identifier.citation | ACS applied bio materials, 7 (6) , p. 4017 -4028 | - |
dc.identifier.uri | http://hdl.handle.net/1942/43244 | - |
dc.description.abstract | Microalgae show great promise for producing valuable molecules like biofuels, but their large-scale production faces challenges, with harvesting being particularly expensive due to their low concentration in water, necessitating extensive treatment. While methods such as centrifugation and filtration have been proposed, their efficiency and cost-effectiveness are limited. Flotation, involving air-bubbles lifting microalgae to the surface, offers a viable alternative, yet the repulsive interaction between bubbles and cells can hinder its effectiveness. Previous research from our group proposed using an amphiphilic chitosan derivative, polyoctyl chitosan (PO-chitosan), to functionalize bubbles used in dissolved air flotation (DAF). Molecular-scale studies performed using atomic force microscopy (AFM) revealed that PO-chitosan's efficiency correlates with cell surface properties, particularly hydrophobic ones, raising the question of whether this molecule can in fact be used more generally to harvest different microalgae. Evaluating this, we used a different strain of Chlorella vulgaris and first characterized its surface properties using AFM. Results showed that cells were hydrophilic but could still interact with PO-chitosan on bubble surfaces through a different mechanism based on specific interactions. Although force levels were low, flotation resulted in 84% separation, which could be explained by the presence of AOM (algal organic matter) that also interacts with functionalized bubbles, enhancing the overall separation. Finally, flocculation was also shown to be efficient and pH-independent, demonstrating the potential of PO-chitosan for harvesting microalgae with different cell surface properties and thus for further sustainable large-scale applications. | - |
dc.description.sponsorship | C.F.-D. is a researcher at CNRS. C.F.-D. acknowledges financial support for this work from the Agence Nationale de la Recherche, JCJC project FLOTALG (ANR-18-CE43-0001- 01). C.F.-D. and D.V. acknowledge support from the Partenariat Hubert Curien program TOURNESOL (project 47631YB). This work was partly supported by LAAS-CNRS micro- and nanotechnologies platform, member of the French RENATECH network. M.P. and S.L. are PhD researchers at ACC, UHasselt with financial support from FWO junior fundamental research project G050220N and UHasselt BOF Project R-9781, respectively. In addition, we thank the PICTICEO facility dedicated to enzyme screening and discovery, and part of the Integrated Screening Platform of Toulouse (PICT, IBiSA) for providing access to the plasma generator. PICT-ICEO is a member of IBISBA-FR (https://doi.org/10. 15454/08BX-VJ91), the French node of the European research infrastructure, IBISBA (www.ibisba.eu). PICT-ICEO acknowledges funding support by the ANR grant Aladin (EQUIPEX+ grant number 15000882). | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.rights | 2024 American Chemical Society | - |
dc.subject.other | Chlorella vulgaris; hydrophobicity; flocculation; flotation; algal | - |
dc.subject.other | organic matter; force spectroscopy | - |
dc.title | The Biophysical Properties of Microalgal Cell Surfaces Govern Their Interactions with an Amphiphilic Chitosan Derivative Used for Flocculation and Flotation | - |
dc.type | Journal Contribution | - |
dc.identifier.epage | 4028 | - |
dc.identifier.issue | 6 | - |
dc.identifier.spage | 4017 | - |
dc.identifier.volume | 7 | - |
local.format.pages | 12 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | Formosa-Dague, C (corresponding author), Univ Toulouse, CNRS, TBI, INSA,INRAE, F-31400 Toulouse, France. | - |
dc.description.notes | formosa@insa-toulouse.fr | - |
local.publisher.place | 1155 16TH ST, NW, WASHINGTON, DC 20036 USA | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
dc.identifier.doi | 10.1021/acsabm.4c00363 | - |
dc.identifier.pmid | 38788153 | - |
dc.identifier.isi | 001231817000001 | - |
dc.contributor.orcid | PAPPA, MICHAELA/0000-0002-4029-3317; Vandamme, | - |
dc.contributor.orcid | Dries/0000-0003-0941-2434; Formosa-Dague, Cecile/0000-0002-8627-3784 | - |
local.provider.type | wosris | - |
local.description.affiliation | [Demir-Yilmaz, Irem; Guiraud, Pascal; Formosa-Dague, Cecile] Univ Toulouse, CNRS, TBI, INSA,INRAE, F-31400 Toulouse, France. | - |
local.description.affiliation | [Pappa, Michaela; Lama, Sanjaya; Vandamme, Dries] Hasselt Univ, Inst Mat Res, Analyt & Circular Chem, B-3590 Diepenbeek, Belgium. | - |
local.uhasselt.international | yes | - |
item.fulltext | With Fulltext | - |
item.contributor | Demir-Yilmaz, Irem | - |
item.contributor | PAPPA, Michaela | - |
item.contributor | LAMA, Sanjaya | - |
item.contributor | Guiraud, Pascal | - |
item.contributor | VANDAMME, Dries | - |
item.contributor | Formosa-Dague, Cecile | - |
item.embargoEndDate | 2024-11-24 | - |
item.fullcitation | Demir-Yilmaz, Irem; PAPPA, Michaela; LAMA, Sanjaya; Guiraud, Pascal; VANDAMME, Dries & Formosa-Dague, Cecile (2024) The Biophysical Properties of Microalgal Cell Surfaces Govern Their Interactions with an Amphiphilic Chitosan Derivative Used for Flocculation and Flotation. In: ACS applied bio materials, 7 (6) , p. 4017 -4028. | - |
item.accessRights | Embargoed Access | - |
crisitem.journal.issn | 2576-6422 | - |
crisitem.journal.eissn | 2576-6422 | - |
Appears in Collections: | Research publications |
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