PMID- 22105138
OWN - NLM
STAT- MEDLINE
DCOM- 20120227
LR  - 20141120
IS  - 0273-1223 (Print)
IS  - 0273-1223 (Linking)
VI  - 64
IP  - 10
DP  - 2011
TI  - Effective degradation of para-chloronitrobenzene through a sequential treatment 
      using zero-valent iron reduction and Fenton oxidation.
PG  - 2126-31
LID - 10.2166/wst.2011.803 [doi]
AB  - In this study, zero-valent iron (ZVI) was used to pretreat 
      para-chloronitrobenzene (p-CNB), and the major product was para-chloroaniline 
      (p-CAN). By adding H(2)O(2) directly, further p-CAN degradation can be attributed 
      to Fenton oxidation because ferrous ions (Fe(2+)) released during the ZVI 
      corrosion could be used as an activator for H(2)O(2) decomposition. In the 
      reduction process, the reduction efficiency of p-CNB as well as Fe(2+) 
      concentration increased with increasing iron dosage and decreasing solution pH. 
      Under the optimal conditions, 25 mg L(-1) of p-CNB could be transformed in 3 h 
      when initial solution pH was 3.0 and ZVI dosage was 2.0 g L(-1). A sufficient 
      amount of Fe(2+) (50.4 mg L(-1)) was obtained after the above reaction to 
      activate H(2)O(2). In the Fenton process, the oxidization of p-CAN was also more 
      effective in acidic conditions and it increased with increasing H(2)O(2) 
      concentration. The control experiments showed that the sequential treatment was 
      more effective than Fenton oxidation alone in treating p-CNB wastewater since the 
      removal rate of total organic carbon (TOC) was improved by about 34%. It 
      suggested that the amino function group is more susceptible to oxidative radical 
      attack than the nitro function group. Therefore, sequential treatment using 
      zero-valent iron reduction followed by Fenton oxidation is a promising method for 
      p-CNB degradation.
FAU - Le, Chen
AU  - Le C
AD  - School of Environmental Science and Engineering, South China University of 
      Technology, Guangzhou, China.
FAU - Liang, Junqian
AU  - Liang J
FAU - Wu, Jinhua
AU  - Wu J
FAU - Li, Ping
AU  - Li P
FAU - Wang, Xiangde
AU  - Wang X
FAU - Zhu, Nengwu
AU  - Zhu N
FAU - Wu, Pingxiao
AU  - Wu P
FAU - Yang, Bo
AU  - Yang B
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Water Sci Technol
JT  - Water science and technology : a journal of the International Association on 
      Water Pollution Research
JID - 9879497
RN  - 0 (Fenton's reagent)
RN  - 0 (Nitrobenzenes)
RN  - 0 (Water Pollutants, Chemical)
RN  - BBX060AN9V (Hydrogen Peroxide)
RN  - CVL66U249D (4-chloronitrobenzene)
RN  - E1UOL152H7 (Iron)
SB  - IM
MH  - China
MH  - Environmental Restoration and Remediation
MH  - Hydrogen Peroxide/*chemistry
MH  - Hydrogen-Ion Concentration
MH  - Iron/*chemistry
MH  - Nitrobenzenes/*analysis
MH  - Oxidation-Reduction
MH  - Time Factors
MH  - Water Pollutants, Chemical/*analysis
MH  - Water Purification/*methods
EDAT- 2011/11/23 06:00
MHDA- 2012/03/01 06:00
CRDT- 2011/11/23 06:00
PHST- 2011/11/23 06:00 [entrez]
PHST- 2011/11/23 06:00 [pubmed]
PHST- 2012/03/01 06:00 [medline]
AID - 10.2166/wst.2011.803 [doi]
PST - ppublish
SO  - Water Sci Technol. 2011;64(10):2126-31. doi: 10.2166/wst.2011.803.