PMID- 22236949
OWN - NLM
STAT- MEDLINE
DCOM- 20120515
LR  - 20131121
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 205-206
DP  - 2012 Feb 29
TI  - Degradation of high concentration 2,4-dichlorophenol by simultaneous 
      photocatalytic-enzymatic process using TiO2/UV and laccase.
PG  - 150-5
LID - 10.1016/j.jhazmat.2011.12.052 [doi]
AB  - Removal of 2,4-dichlorophenol (2,4-DCP) by TiO2/UV photocatalytic, laccase, and 
      simultaneous photocatalytic-enzymatic treatments were investigated. Coupling of 
      native laccase with TiO2/UV showed a negative synergetic effect due to the rapid 
      inactivation of laccase. Immobilizing laccase covalently to controlled porous 
      glass (CPG) effectively enhanced the stability of laccase against TiO2/UV induced 
      inactivation. By coupling CPG-laccase with the TiO2/UV the degradation efficiency 
      of 2,4-DCP was significantly increased as compared with the results obtained when 
      immobilized laccase or TiO2/UV were separately used. Moreover, the enhancement 
      was more remarkable for the degradation of 2,4-DCP with high concentration, such 
      that for the degradation of 5mM 2,4-DCP, 90% removal percentage was achieved 
      within 2h with the coupled degradation process. While for the TiO2/UV and 
      CPG-laccase process, the removal percentage of 2,4-DCP at 2h were only 26.5% and 
      78.1%, respectively. The degradation kinetics were analyzed using a intermediate 
      model by taking into account of the intermediates formed during the degradation 
      of 2,4-DCP. The high efficiency of the coupled degradation process therefore 
      provided a novel strategy for degradation of concentrated 2,4-DCP. Furthermore, a 
      thermometric biosensor using the immobilized laccase as biorecognition element 
      was constructed for monitoring the degradation of 2,4-DCP, the result indicated 
      that the biosensor was precise and sensitive.
CI  - Copyright (c) 2011 Elsevier B.V. All rights reserved.
FAU - Jia, Jingbo
AU  - Jia J
AD  - National Key Laboratory of Biochemical Engineering, Institute of Process 
      Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
FAU - Zhang, Songping
AU  - Zhang S
FAU - Wang, Ping
AU  - Wang P
FAU - Wang, Huajun
AU  - Wang H
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20111226
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 0 (Chlorophenols)
RN  - 0 (Water Pollutants, Chemical)
RN  - 15FIX9V2JP (titanium dioxide)
RN  - D1JT611TNE (Titanium)
RN  - EC 1.10.3.2 (Laccase)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Biosensing Techniques
MH  - Chlorophenols/*chemistry/radiation effects
MH  - Laccase/*chemistry
MH  - Nanoparticles/chemistry
MH  - Photolysis
MH  - Titanium/*chemistry
MH  - *Ultraviolet Rays
MH  - Water Pollutants, Chemical/*chemistry/radiation effects
MH  - Water Purification/methods
EDAT- 2012/01/13 06:00
MHDA- 2012/05/16 06:00
CRDT- 2012/01/13 06:00
PHST- 2011/09/04 00:00 [received]
PHST- 2011/11/24 00:00 [revised]
PHST- 2011/12/19 00:00 [accepted]
PHST- 2012/01/13 06:00 [entrez]
PHST- 2012/01/13 06:00 [pubmed]
PHST- 2012/05/16 06:00 [medline]
AID - S0304-3894(11)01546-9 [pii]
AID - 10.1016/j.jhazmat.2011.12.052 [doi]
PST - ppublish
SO  - J Hazard Mater. 2012 Feb 29;205-206:150-5. doi: 10.1016/j.jhazmat.2011.12.052. 
      Epub 2011 Dec 26.