PMID- 15302021
OWN - NLM
STAT- MEDLINE
DCOM- 20041015
LR  - 20131121
IS  - 1350-4177 (Print)
IS  - 1350-4177 (Linking)
VI  - 11
IP  - 6
DP  - 2004 Sep
TI  - A new sono-electrochemical method for enhanced detoxification of hydrophilic 
      chloroorganic pollutants in water.
PG  - 365-72
AB  - A new method for detoxification of hydrophilic chloroorganic pollutants in 
      effluent water was developed, using a combination of ultrasound waves, 
      electrochemistry and Fenton's reagent. The advantages of the method are 
      exemplified using two target compounds: the common herbicide 
      2,4-dichlorophenoxyacetic acid (2,4-D) and its derivative 2,4-dichlorophenol 
      (2,4-DCP). The high degradation power of this process is due to the large 
      production of oxidizing hydroxyl radicals and high mass transfer due to 
      sonication. Application of this sono-electrochemical Fenton process (SEF) 
      treatment (at 20 kHz) with quite a small current density, accomplished almost 50% 
      oxidation of 2,4-D solution (300 ppm, 1.2 mM) in just 60 s. Similar treatments 
      ran for 600 s resulted in practically full degradation of the herbicide; sizable 
      oxidation of 2,4-DCP also occurs. The main intermediate compounds produced in the 
      SEF process were identified. Their kinetic profile was measured and a chemical 
      reaction scheme was suggested. The efficiency of the SEF process is tentatively 
      much higher than the reference degradation methods and the time required for full 
      degradation is considerably shorter. The SEF process maintains high performance 
      up to concentrations which are higher than reference methods. The optimum 
      concentration of Fe2+ ions required for this process was found to be of about 2 
      mM, which is lower than that in reference techniques. These findings indicate 
      that SEF process may be an effective method for detoxification of environmental 
      water.
FAU - Yasman, Yakov
AU  - Yasman Y
AD  - Department of Chemistry, The Grand Water Research Institute, Technion-Israel 
      Institute of Technology, Technion City, Haifa 32000.
FAU - Bulatov, Valery
AU  - Bulatov V
FAU - Gridin, Vladimir V
AU  - Gridin VV
FAU - Agur, Sabina
AU  - Agur S
FAU - Galil, Noah
AU  - Galil N
FAU - Armon, Robert
AU  - Armon R
FAU - Schechter, Israel
AU  - Schechter I
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Netherlands
TA  - Ultrason Sonochem
JT  - Ultrasonics sonochemistry
JID - 9433356
RN  - 0 (Herbicides)
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Indicators and Reagents)
RN  - 0 (Water Pollutants, Chemical)
RN  - 2577AQ9262 (2,4-Dichlorophenoxyacetic Acid)
RN  - E1UOL152H7 (Iron)
SB  - IM
MH  - 2,4-Dichlorophenoxyacetic Acid/chemistry/toxicity
MH  - *Electrochemistry
MH  - Herbicides/chemistry/toxicity
MH  - Hydrocarbons, Chlorinated/*chemistry/*toxicity
MH  - Indicators and Reagents
MH  - Iron/chemistry
MH  - Kinetics
MH  - *Ultrasonics
MH  - Water Pollutants, Chemical/*analysis
MH  - *Water Supply
EDAT- 2004/08/11 05:00
MHDA- 2004/10/16 09:00
CRDT- 2004/08/11 05:00
PHST- 2003/04/24 00:00 [received]
PHST- 2003/10/12 00:00 [accepted]
PHST- 2004/08/11 05:00 [pubmed]
PHST- 2004/10/16 09:00 [medline]
PHST- 2004/08/11 05:00 [entrez]
AID - S1350-4177(03)00201-3 [pii]
AID - 10.1016/j.ultsonch.2003.10.004 [doi]
PST - ppublish
SO  - Ultrason Sonochem. 2004 Sep;11(6):365-72. doi: 10.1016/j.ultsonch.2003.10.004.