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.

Bianco Prevot, A., Baino, F., Fabbri, D., Franzoso, F., Magnacca, G., Nistico', R., et al. (2017). Urban biowaste-derived sensitizing materials for caffeine photodegradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL, 24(14), 12599-12607 [10.1007/s11356-016-7763-1].

Urban biowaste-derived sensitizing materials for caffeine photodegradation

NISTICO', ROBERTO
Penultimo
;
2017

Abstract

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.
Articolo in rivista - Articolo scientifico
Caffeine photodegradation; Bio-based substances; Fenton; Photo-Fenton; magnetic nanoparticles; Urban waste;
English
12599
12607
9
Bianco Prevot, A., Baino, F., Fabbri, D., Franzoso, F., Magnacca, G., Nistico', R., et al. (2017). Urban biowaste-derived sensitizing materials for caffeine photodegradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL, 24(14), 12599-12607 [10.1007/s11356-016-7763-1].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/349600
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