PMID- 25119276
OWN - NLM
STAT- MEDLINE
DCOM- 20150618
LR  - 20211021
IS  - 1614-7499 (Electronic)
IS  - 0944-1344 (Linking)
VI  - 22
IP  - 2
DP  - 2015 Jan
TI  - Simultaneously degradation of 2,4-dichlorophenol and EDTA in aqueous solution by 
      the bimetallic Cu-Fe/O(2) system.
PG  - 1186-98
LID - 10.1007/s11356-014-3372-z [doi]
AB  - Oxidative degradation of aqueous organic contaminants 2,4-dichlorophenol 
      (2,4-DCP) using ethylenediaminetetraacetic acid (EDTA)-enhanced bimetallic Cu-Fe 
      system in the presence of dissolved oxygen was investigated. The proposed process 
      was applied for the pH range of 3~7 with the degradation efficiency of 2,4-DCP 
      and EDTA varying within 10 %, and achieved at 100 % degradation of 40 mg L(-1) 
      2,4-DCP in 1 h, at the initial pH of 3, 25 g L(-1) of bimetallic Fe-Cu powder 
      (WCu/WFe = 0.01289) and initial EDTA of 0.57 mM. However, the removal efficiency 
      of 2,4-DCP in control tests were 7.52 % (Cu-Fe/O2 system) and 84.32 % 
      (EDTA-enhanced Fe/O2 process), respectively, after 3 h, reaction. The proposed 
      main mechanism, involves the in situ generation of H2O2 by the electron transfer 
      from Fe(0) to O2 which was enhanced by ethylenediaminetetraacetic acid (EDTA), 
      and the in situ generation of .OH via advanced oxidation reaction. Accordingly, 
      2,4-DCP was attacked by .OH to achieve complete dechlorination and low molecular 
      weight organic acids, even mineralized. Systematic studies on the effects of 
      initial EDTA and 2,4-DCP concentration, Cu-Fe dosing, Cu content, and pH revealed 
      that these effects need to be optimized to avoid the excessive consumption of .OH 
      and new EDTA and heavy metal Cu pollution.
FAU - Liu, Xin
AU  - Liu X
AD  - National Engineering Research Center for Urban Pollution Control, Tongji 
      University, Shanghai, 200092, China.
FAU - Fan, Jin-Hong
AU  - Fan JH
FAU - Ma, Lu-Ming
AU  - Ma LM
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20140815
PL  - Germany
TA  - Environ Sci Pollut Res Int
JT  - Environmental science and pollution research international
JID - 9441769
RN  - 0 (Chlorophenols)
RN  - 0 (Environmental Pollutants)
RN  - 0 (Solutions)
RN  - 059QF0KO0R (Water)
RN  - 789U1901C5 (Copper)
RN  - 9G34HU7RV0 (Edetic Acid)
RN  - E1UOL152H7 (Iron)
RN  - R669TG1950 (2,4-dichlorophenol)
RN  - S88TT14065 (Oxygen)
SB  - IM
MH  - Chlorophenols/*chemistry
MH  - Copper/*chemistry
MH  - Edetic Acid/*chemistry
MH  - Electron Transport
MH  - Environmental Pollutants/*chemistry
MH  - Hydrogen-Ion Concentration
MH  - Iron/*chemistry
MH  - Light
MH  - Oxygen/*chemistry
MH  - Pressure
MH  - Solutions
MH  - Temperature
MH  - Time Factors
MH  - Water/*chemistry
EDAT- 2014/08/15 06:00
MHDA- 2015/06/19 06:00
CRDT- 2014/08/15 06:00
PHST- 2014/01/07 00:00 [received]
PHST- 2014/07/22 00:00 [accepted]
PHST- 2014/08/15 06:00 [entrez]
PHST- 2014/08/15 06:00 [pubmed]
PHST- 2015/06/19 06:00 [medline]
AID - 10.1007/s11356-014-3372-z [doi]
PST - ppublish
SO  - Environ Sci Pollut Res Int. 2015 Jan;22(2):1186-98. doi: 
      10.1007/s11356-014-3372-z. Epub 2014 Aug 15.