PMID- 25560258
OWN - NLM
STAT- MEDLINE
DCOM- 20150622
LR  - 20181202
IS  - 1532-4117 (Electronic)
IS  - 1093-4529 (Linking)
VI  - 50
IP  - 2
DP  - 2015
TI  - Solar photocatalytic degradation of chlorophenols mixture (4-CP and 2,4-DCP): 
      Mechanism and kinetic modelling.
PG  - 125-34
LID - 10.1080/10934529.2015.975045 [doi]
AB  - The solar-photocatalytic degradation mechanisms and kinetics of 4-chlorophenol 
      (4-CP) and 2,4-dichlorophenol (2,4-DCP) using TiO2 have been investigated both 
      individually and combined. The individual solar-photocatalytic degradation of 
      both phenolic compounds showed that the reaction rates follow pseudo-first-order 
      reaction. During the individual photocatalytic degradation of both 4-CP and 
      2,4-DCP under the same condition of TiO2 (0.5 g L(-1)) and light intensities 
      (1000 mW cm(-2)) different intermediates were detected, three compounds 
      associated with 4-CP (hydroquinone (HQ), phenol (Ph) and 4-chlorocatechol 
      (4-cCat)) and two compounds associated with 2,4-DCP (4-CP and Ph). The 
      photocatalytic degradation of the combined mixture (4-CP and 2,4-DCP) was also 
      investigated at the same conditions and different 2,4-DCP initial concentrations. 
      The results showed that the degradation rate of 4-CP decreases when the 2,4-DCP 
      concentration increases. Furthermore, the intermediates detected were similar to 
      that found in the individual degradation but with high Ph concentration. 
      Therefore, a possible reaction mechanism for degradation of this combined mixture 
      was proposed. Moreover, a modified Langmuir-Hinshelwood (L-H) kinetic model 
      considering all detected intermediates was developed. A good agreement between 
      experimental and estimated results was achieved. This model can be useful for 
      scaling-up purposes more accurately as its considering the intermediates formed, 
      which has a significant effect on degrading the main pollutants (4-CP and 
      2,4-DCP).
FAU - Abeish, Abdulbasit M
AU  - Abeish AM
AD  - a Department of Chemical Engineering , Curtin University , Perth WA , Australia.
FAU - Ang, Ha Ming
AU  - Ang HM
FAU - Znad, Hussein
AU  - Znad H
LA  - eng
PT  - Journal Article
PL  - England
TA  - J Environ Sci Health A Tox Hazard Subst Environ Eng
JT  - Journal of environmental science and health. Part A, Toxic/hazardous substances & 
      environmental engineering
JID - 9812551
RN  - 0 (Catechols)
RN  - 0 (Chlorophenols)
RN  - 0 (Complex Mixtures)
SB  - IM
MH  - Catalysis
MH  - Catechols/*chemistry
MH  - Chlorophenols/*chemistry
MH  - Complex Mixtures/*chemistry
MH  - Kinetics
MH  - *Models, Chemical
MH  - Photolysis
MH  - Sunlight
OTO - NOTNLM
OT  - 2
OT  - 4-CP
OT  - 4-DCP
OT  - chlorophenols mixture
OT  - degradation
OT  - kinetic modelling
OT  - mechanism
OT  - solar photocatalytic
EDAT- 2015/01/07 06:00
MHDA- 2015/06/24 06:00
CRDT- 2015/01/07 06:00
PHST- 2015/01/07 06:00 [entrez]
PHST- 2015/01/07 06:00 [pubmed]
PHST- 2015/06/24 06:00 [medline]
AID - 10.1080/10934529.2015.975045 [doi]
PST - ppublish
SO  - J Environ Sci Health A Tox Hazard Subst Environ Eng. 2015;50(2):125-34. doi: 
      10.1080/10934529.2015.975045.