Argentina | Articulo

Photoinduced transformation of waste-derived soluble bio-based substances

dc.creatorAvetta, P.
dc.creatorBerto, S.
dc.creatorBianco Prevot, A.
dc.creatorMinella, M.
dc.creatorMontoneri, E.
dc.creatorPersico, D.
dc.creatorVione, D.
dc.creatorGonzález, Mónica Cristina
dc.creatorMártire, Daniel Osvaldo
dc.creatorCarlos, Luciano
dc.creatorArques, A.
dc.date2015-04-03
dc.date2020-06-18T21:13:29Z
dc.date.accessioned2023-07-14T20:35:02Z
dc.date.available2023-07-14T20:35:02Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/98556
dc.identifierhttps://ri.conicet.gov.ar/11336/44578
dc.identifierissn:1385-8947
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7439813
dc.descriptionWaste-derived, soluble bio-based substances (SBO), are effective low-cost photosensitizers that couldfind application in pollutant photodegradation. For this reason, it is important to understand if and towhat extent irradiation could modify their properties. The exposure of SBO to simulated sunlight inducedimportant spectral and structural modifications. Both the whole material and its acid-soluble fractionwere characterized, highlighting several properties in common with humic and fulvic substances, includingabsorption spectra, specific absorbance and fluorescence behavior. The latter was described with athree-component model using PARAFAC analysis. Irradiation induced SBO photobleaching, but the absorbanceof the acid-soluble fraction increased with irradiation. This finding suggests a progressivephotochemical solubilization of SBO, which is confirmed by the increase of the carboxylic groups. In additionto absorbance, the fluorescence of whole SBO was also decreased by irradiation, thereby suggestingthat both chromophores and fluorophores were photodegraded. The increasingly hydrophilic charactergiven to SBO by irradiation also accounted for the photoinduced decrease of the surfactant propertiesof the material.
dc.descriptionInstituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
dc.descriptionConsejo Nacional de Investigaciones Científicas y Técnicas
dc.formatapplication/pdf
dc.format247-255
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectQuímica
dc.subjectPhototransformation processes
dc.subjectBiowaste
dc.subjectSoluble bio-based substances
dc.subjectFluorescence matrix
dc.titlePhotoinduced transformation of waste-derived soluble bio-based substances
dc.typeArticulo
dc.typePreprint


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