Oxidative decomposition of atrazine in water in the presence of hydrogen peroxide using an innovative microwave photochemical reactor (Articolo in rivista)

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  • Oxidative decomposition of atrazine in water in the presence of hydrogen peroxide using an innovative microwave photochemical reactor (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jhazmat.2010.12.065 (literal)
Alternative label
  • Chen Huilun [ 2 ] ; Bramanti Emilia [ 1 ] ; Longo Iginio [ 3 ] ; Onor Massimo [ 1 ]; Ferrari Carlo [ 3 ] (2011)
    Oxidative decomposition of atrazine in water in the presence of hydrogen peroxide using an innovative microwave photochemical reactor
    in Journal of hazardous materials (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Chen Huilun [ 2 ] ; Bramanti Emilia [ 1 ] ; Longo Iginio [ 3 ] ; Onor Massimo [ 1 ]; Ferrari Carlo [ 3 ] (literal)
Pagina inizio
  • 1808 (literal)
Pagina fine
  • 1815 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 186 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2-3 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Ist Chim Composti Organometall ICCOM, CNR, Italian Natl Res Council, I-56124 Pisa, Italy [ 2 ] Univ Sci & Technol Beijing, Dept Environm Engn, Civil & Environm Engn Sch, Beijing 100083, Peoples R China [ 3 ] Natl Inst Opt INO, Italian Natl Res Council, I-56124 Pisa, Italy (literal)
Titolo
  • Oxidative decomposition of atrazine in water in the presence of hydrogen peroxide using an innovative microwave photochemical reactor (literal)
Abstract
  • The simultaneous application of microwave (MW) power and UV light leads to improved results in photochemical processes. This study investigates the oxidative decomposition of atrazine in water using an innovative MW and UV photochemical reactor, which activates a chemical reaction with MW and UV radiation using an immersed source without the need for a MW oven. We investigated the influence of reaction parameters such as initial H(2)O(2) concentrations, reaction temperatures and applied MW power and identified the optimal conditions for the oxidative decomposition of atrazine. Atrazine was completely degraded by MW/UV/H(2)O(2) in a very short time (i.e. t(1/2) = 1.1 min for 20.8 mg/L in optimal conditions). From the kinetic study, the disappearance rate of atrazine can be expressed as dX/dt = k(PH)[M](0)(b - X)(1 - X), where b equivalent to[H(2)O(2)](0)/[M](0) + k(OH)[(center dot)OH]/k(PH)[M](0), and X is the atrazine conversion, which correlates well with the experimental data. The kinetic analysis also showed that an indirect reaction of atrazine with an OH radical is dominant at low concentrations of H(2)O(2) and a direct reaction of atrazine with H(2)O(2) is dominant when the concentration of H(2)O(2) is more than 200 mg/L (C) 2010 Elsevier B.V. (literal)
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