PMID- 22377173
OWN - NLM
STAT- MEDLINE
DCOM- 20120727
LR  - 20191210
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 87
IP  - 10
DP  - 2012 Jun
TI  - Electrogeneration of H(2) for Pd-catalytic hydrodechlorination of 
      2,4-dichlorophenol in groundwater.
PG  - 1097-104
LID - 10.1016/j.chemosphere.2012.01.058 [doi]
AB  - A novel electrolytic groundwater remediation process, which used the H(2) 
      continuously generated at cathode to achieve in situ catalytic 
      hydrodechlorination, was developed for the treatment of 2,4-dichlorophenol 
      (2,4-DCP) in groundwater. Catalytic hydrodechlorination using Pd supported on 
      bamboo charcoal and external H(2) showed that 2,4-DCP was completely 
      dechlorinated to phenol within 30 min at pH </= 5.5. In a divided electrolytic 
      system, the catalytic hydrodechlorination of 2,4-DCP in cathodic compartment by 
      H(2) generated at the cathode under 20 and 50 mA reached 100% at 120 and 60 min, 
      respectively. Two column experiments with influent pHs of 5.5 (unconditioned) and 
      2 were conducted to evaluate the feasibility of this process. The 2,4-DCP removal 
      efficiencies were about 63% and nearly 100% at influent pHs of 5.5 and 2, 
      respectively. Phenol was solely produced by 2,4-DCP hydrodechlorination, and was 
      subsequently degraded at the anode. A low pH could enhance the 
      hydrodechlorination, but was not necessarily required. This study provides the 
      preliminary results of a novel effective electrolytic process for the remediation 
      of groundwater contaminated by chlorinated aromatics.
CI  - Copyright (c) 2012 Elsevier Ltd. All rights reserved.
FAU - Zheng, Mingming
AU  - Zheng M
AD  - State Key Lab of Biogeology and Environmental Geology, China University of 
      Geosciences, Wuhan 430074, PR China.
FAU - Bao, Jianguo
AU  - Bao J
FAU - Liao, Peng
AU  - Liao P
FAU - Wang, Kun
AU  - Wang K
FAU - Yuan, Songhu
AU  - Yuan S
FAU - Tong, Man
AU  - Tong M
FAU - Long, Huayun
AU  - Long H
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120227
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Chlorophenols)
RN  - 0 (Water Pollutants, Chemical)
RN  - 16291-96-6 (Charcoal)
RN  - 5TWQ1V240M (Palladium)
RN  - 7782-42-5 (Graphite)
RN  - 7YNJ3PO35Z (Hydrogen)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Charcoal/chemistry
MH  - Chlorophenols/*chemistry
MH  - Chromatography, High Pressure Liquid
MH  - Electrodes
MH  - Electrolysis/*methods
MH  - Environmental Restoration and Remediation/*methods
MH  - Graphite/chemistry
MH  - Groundwater/chemistry
MH  - Hydrogen/*chemistry
MH  - Microscopy, Electron, Scanning
MH  - Palladium/chemistry
MH  - Poaceae/chemistry
MH  - Water Pollutants, Chemical/*chemistry
EDAT- 2012/03/02 06:00
MHDA- 2012/07/28 06:00
CRDT- 2012/03/02 06:00
PHST- 2011/10/17 00:00 [received]
PHST- 2012/01/30 00:00 [revised]
PHST- 2012/01/30 00:00 [accepted]
PHST- 2012/03/02 06:00 [entrez]
PHST- 2012/03/02 06:00 [pubmed]
PHST- 2012/07/28 06:00 [medline]
AID - S0045-6535(12)00164-6 [pii]
AID - 10.1016/j.chemosphere.2012.01.058 [doi]
PST - ppublish
SO  - Chemosphere. 2012 Jun;87(10):1097-104. doi: 10.1016/j.chemosphere.2012.01.058. 
      Epub 2012 Feb 27.