PMID- 26800432
OWN - NLM
STAT- MEDLINE
DCOM- 20161011
LR  - 20181202
IS  - 1095-8630 (Electronic)
IS  - 0301-4797 (Linking)
VI  - 170
DP  - 2016 Apr 1
TI  - Photo-Fenton degradation of the herbicide 2,4-D in aqueous medium at pH 
      conditions close to neutrality.
PG  - 60-9
LID - S0301-4797(16)30002-0 [pii]
LID - 10.1016/j.jenvman.2016.01.002 [doi]
AB  - A theoretical and experimental study of the photo-Fenton degradation of the 
      herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) in water is presented. A kinetic 
      model derived from a reaction sequence is proposed using the ferrioxalate complex 
      as iron source for conditions of pH = 5. The kinetic model was employed to 
      predict the concentrations of 2,4-D, 2,4-dichlorophenol (2,4-DCP), hydrogen 
      peroxide (HP) and oxalate (Ox) in a flat plate laboratory reactor irradiated with 
      a solar simulator. Two types of incident irradiation levels were tested by 
      different combinations of attenuation filters. The effects of the oxalate/Fe(+3) 
      molar ratio (Ox/Fe), the reaction temperature (T) and the 2,4-D/HP molar ratio 
      (R) on the photo-Fenton process were also investigated. For low radiation level 
      and operating conditions of R = 50 and T = 50  degrees C, a 2,4-D conversion of 95.6% was 
      obtained after 180 min. Moreover, the 2,4-D conversion was almost 100% in only 
      120 min when the system was operated under the same operating conditions and high 
      radiation level. From the proposed model and the experimental data, the 
      corresponding kinetic parameters were estimated applying a nonlinear regression 
      method. A good agreement between the kinetic model and experimental data, for a 
      wide range of simulated solar operating conditions, was observed. For 2,4-D, 
      2,4-DCP, HP and Ox concentrations, the calculated RMSE were 1.21 x 10(-2), 5.45 x 
      10(-3), 2.86 x 10(-1) and 2.65 x 10(-2) mM, respectively.
CI  - Copyright (c) 2016 Elsevier Ltd. All rights reserved.
FAU - Conte, Leandro O
AU  - Conte LO
AD  - INTEC (CONICET-UNL), Ruta Nacional N masculine 168, 3000, Santa Fe, Argentina.
FAU - Schenone, Agustina V
AU  - Schenone AV
AD  - INTEC (CONICET-UNL), Ruta Nacional N masculine 168, 3000, Santa Fe, Argentina.
FAU - Alfano, Orlando M
AU  - Alfano OM
AD  - INTEC (CONICET-UNL), Ruta Nacional N masculine 168, 3000, Santa Fe, Argentina. Electronic 
      address: alfano@intec.unl.edu.ar.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20160119
PL  - England
TA  - J Environ Manage
JT  - Journal of environmental management
JID - 0401664
RN  - 0 (Fenton's reagent)
RN  - 0 (Herbicides)
RN  - 0 (Oxalates)
RN  - 0 (Water Pollutants, Chemical)
RN  - 15321-61-6 (ferrioxalate)
RN  - 2577AQ9262 (2,4-Dichlorophenoxyacetic Acid)
RN  - BBX060AN9V (Hydrogen Peroxide)
RN  - E1UOL152H7 (Iron)
SB  - IM
MH  - 2,4-Dichlorophenoxyacetic Acid/*chemistry
MH  - Herbicides/*chemistry
MH  - Humans
MH  - Hydrogen Peroxide/chemistry
MH  - Hydrogen-Ion Concentration
MH  - Iron/chemistry
MH  - Oxalates/chemistry
MH  - Water Pollutants, Chemical/*chemistry
MH  - Water Purification/methods
OTO - NOTNLM
OT  - Ferrioxalate
OT  - Herbicide 2,4-D
OT  - Neutral pH
OT  - Photo-Fenton
EDAT- 2016/01/23 06:00
MHDA- 2016/10/12 06:00
CRDT- 2016/01/23 06:00
PHST- 2015/10/05 00:00 [received]
PHST- 2015/12/29 00:00 [revised]
PHST- 2016/01/03 00:00 [accepted]
PHST- 2016/01/23 06:00 [entrez]
PHST- 2016/01/23 06:00 [pubmed]
PHST- 2016/10/12 06:00 [medline]
AID - S0301-4797(16)30002-0 [pii]
AID - 10.1016/j.jenvman.2016.01.002 [doi]
PST - ppublish
SO  - J Environ Manage. 2016 Apr 1;170:60-9. doi: 10.1016/j.jenvman.2016.01.002. Epub 
      2016 Jan 19.