Caffeine-photosensitized degradation has been studied in the presence of bio-based materials derived from urban biowaste after aerobic aging. A peculiar fraction (namely bio-based substances (BBSs)), soluble in all the pH range, has been used as photosensitizing agent. Several caffeine photodegradation tests have been performed, and positive results have been obtained in the presence of BBSs and H2O2, without and with additional Fe(II) (photo-Fenton-like process). Moreover, hybrid magnetite-BBS nanoparticles have been synthesized and characterized, in order to improve the sensitizer recovery and reuse after the caffeine degradation. In the presence of such nanoparticles and H2O2 and Fe(II), the complete caffeine degradation has been attained in very short time. Both homogeneous and heterogeneous processes were run at pH = 5, milder condition compared to the classic photo-Fenton process.
Urban biowaste-derived sensitizing materials for caffeine photodegradation / Bianco Prevot, Alessandra; Baino, Francesca; Fabbri, Debora; Franzoso, Flavia; Magnacca, Giuliana; Nisticò, Roberto; Arques, Antonio.. - In: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL. - ISSN 1614-7499. - ELETTRONICO. - 24(2017), pp. 12599-12607.
|Titolo:||Urban biowaste-derived sensitizing materials for caffeine photodegradation|
|Data di pubblicazione:||2017|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1007/s11356-016-7763-1|
|Appare nelle tipologie:||1.1 Articolo in rivista|