Neutral solar photo-Fenton degradation of 4-nitrophenol oniron-enriched hybrid montmorillonite-alginate beads (Fe-MABs)

Santino Orecchio, Salvatore Barreca, Andrea Pace, Andrea Pace, Julia Janeth Velez Colmenares, Salvatore Barreca, Cesar Pulgarin

Risultato della ricerca: Articlepeer review

44 Citazioni (Scopus)

Abstract

Hybrid montmorillonite-alginate beads (MABs) were prepared by the ion-gelation method from alginateand montmorillonite clay suspension dropped in a calcium chloride solution. Similarly, iron-enrichedbeads (Fe-MABs) were prepared using iron-exchanged montmorillonite. All beads were characterized byatomic absorption and Fourier-transform infrared spectroscopy. The efficiency of Fe-MABs as catalystsfor the solar photo-Fenton performed at initial pH = 7.0 was evaluated by varying the catalyst amountand hydrogen peroxide concentration, and monitoring the removal of 4-nitrophenol (4-NP) at initialconcentration of 10 ppm. A kinetic analysis showed that the removal of 4-NP by Fe-MABs followed apseudo first-order kinetics model (R2 = 0.966).High 4-NP removal (75%) was achieved with 25 Fe-MABs by using 150 ppm of hydrogen peroxide and40 min of irradiation, while total 4-NP removal was obtained by using 500 ppm of hydrogen peroxide.Moreover, preliminary studies about beads’ recycling showed good removal efficiencies for the first threecycles.
Lingua originaleEnglish
Numero di pagine8
RivistaJOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. A, CHEMISTRY
Volume282
Stato di pubblicazionePublished - 2014

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.1500.1500???
  • ???subjectarea.asjc.3100.3100???

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