PMID- 12604075
OWN - NLM
STAT- MEDLINE
DCOM- 20030421
LR  - 20131121
IS  - 0045-6535 (Print)
IS  - 0045-6535 (Linking)
VI  - 51
IP  - 4
DP  - 2003 Apr
TI  - Observations of 2,4,6-trichlorophenol degradation by ozone.
PG  - 237-43
AB  - The aqueous reactivity of 2,4,6-trichlorophenol (TCP) with ozone has been studied 
      at laboratory-scale using a simple gas bubble/liquid contacting system. 
      Degradation rate constants were measured directly and found to be 7.6 and 77.2 
      M(-1)s(-1) at pH 2 and 7.5, respectively. At pH 7.5, 10 min of ozonation ( 
      identical with 15 mM ozone consumption) achieved a 90% degradation of TCP, which 
      corresponded to the release of approximately 2 mol Cl(-) per mol TCP. The 
      presence of hydrogen peroxide in solution did not significantly increase the TCP 
      degradation but increased the overall dechlorination to 2.7 mol Cl(-) per mol 
      TCP. The presence of humic acid (HA) in solution was found to enhance the 
      degradation rate of TCP at low relative HA concentrations (<0.6 g/g HA:TCP), but 
      to reduce the rate at higher HA concentrations.
FAU - Graham, Nigel
AU  - Graham N
AD  - Department of Civil and Structural Engineering, Research Centre for Urban 
      Environmental Technology and Management, The Hong Kong Polytechnic University, 
      Hung Hom, Kowloon, Hong Kong.
FAU - Chu, Wei
AU  - Chu W
FAU - Lau, Catherine
AU  - Lau C
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Chlorophenols)
RN  - 0 (Humic Substances)
RN  - 0 (Mutagens)
RN  - 0 (Oxidants)
RN  - 0 (Oxidants, Photochemical)
RN  - 66H7ZZK23N (Ozone)
RN  - BBX060AN9V (Hydrogen Peroxide)
RN  - MHS8C5BAUZ (2,4,6-trichlorophenol)
SB  - IM
MH  - Chlorophenols/*chemistry
MH  - Environmental Pollution/*prevention & control
MH  - Humic Substances/chemistry
MH  - Hydrogen Peroxide/chemistry
MH  - Hydrogen-Ion Concentration
MH  - Kinetics
MH  - Mutagens/*chemistry
MH  - Oxidants/chemistry
MH  - Oxidants, Photochemical/*chemistry
MH  - Ozone/*chemistry
EDAT- 2003/02/27 04:00
MHDA- 2003/04/22 05:00
CRDT- 2003/02/27 04:00
PHST- 2003/02/27 04:00 [pubmed]
PHST- 2003/04/22 05:00 [medline]
PHST- 2003/02/27 04:00 [entrez]
AID - S0045-6535(02)00815-9 [pii]
AID - 10.1016/S0045-6535(02)00815-9 [doi]
PST - ppublish
SO  - Chemosphere. 2003 Apr;51(4):237-43. doi: 10.1016/S0045-6535(02)00815-9.