PMID- 21750905
OWN - NLM
STAT- MEDLINE
DCOM- 20120620
LR  - 20151119
IS  - 1572-9729 (Electronic)
IS  - 0923-9820 (Linking)
VI  - 23
IP  - 1
DP  - 2012 Feb
TI  - Integrated photocatalytic-biological reactor for accelerated 
      2,4,6-trichlorophenol degradation and mineralization.
PG  - 189-98
LID - 10.1007/s10532-011-9498-5 [doi]
AB  - An integrated photocatalytic-biological reactor (IPBR) was used for accelerated 
      degradation and mineralization of 2,4,6-trichlorophenol (TCP) through 
      simultaneous, intimate coupling of photocatalysis and biodegradation in one 
      reactor. Intimate coupling was realized by circulating the IPBR's liquid contents 
      between a TiO(2) film on mat glass illuminated by UV light and honeycomb ceramics 
      as biofilm carriers. Three protocols-photocatalysis alone (P), biodegradation 
      alone (B), and integrated photocatalysis and biodegradation (photobiodegradation, 
      P&B)-were used for degradation of different initial TCP concentrations. 
      Intimately coupled P&B also was compared with sequential P and B. TCP removal by 
      intimately coupled P&B was faster than that by P and B alone or sequentially 
      coupled P and B. Because photocatalysis relieved TCP inhibition to biodegradation 
      by decreasing its concentration, TCP biodegradation could become more important 
      over the full batch P&B experiments. When phenol, an easy biodegradable 
      compounds, was added to TCP in order to promote TCP mineralization by means of 
      secondary utilization, P&B was superior to P and B in terms of mineralization of 
      TCP, giving 95% removal of chemical oxygen demand. Cl(-) was only partially 
      released during P experiments (24%), and this corresponded to its poor 
      mineralization in P experiments (32%). Thus, intimately coupled P&B in the IPBR 
      made it possible obtain the best features of each: rapid photocatalytic 
      transformation in parallel with mineralization of photocatalytic products.
FAU - Zhang, Yongming
AU  - Zhang Y
AD  - Department of Environmental Engineering, College of Life and Environmental 
      Science, Shanghai Normal University, Shanghai, People's Republic of China. 
      zhym@shnu.edu.cn
FAU - Sun, Xia
AU  - Sun X
FAU - Chen, Lujun
AU  - Chen L
FAU - Rittmann, Bruce E
AU  - Rittmann BE
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20110713
PL  - Netherlands
TA  - Biodegradation
JT  - Biodegradation
JID - 9100834
RN  - 0 (Chlorophenols)
RN  - 0 (Sewage)
RN  - 0 (Water Pollutants, Chemical)
RN  - 15FIX9V2JP (titanium dioxide)
RN  - D1JT611TNE (Titanium)
RN  - MHS8C5BAUZ (2,4,6-trichlorophenol)
SB  - IM
MH  - Bacteria, Aerobic/*physiology
MH  - Biodegradation, Environmental
MH  - *Biofilms
MH  - Bioreactors
MH  - Ceramics
MH  - Chlorophenols/*metabolism
MH  - Photochemical Processes
MH  - Sewage
MH  - Titanium
MH  - Ultraviolet Rays
MH  - Water Pollutants, Chemical/*metabolism
EDAT- 2011/07/14 06:00
MHDA- 2012/06/21 06:00
CRDT- 2011/07/14 06:00
PHST- 2011/03/25 00:00 [received]
PHST- 2011/06/30 00:00 [accepted]
PHST- 2011/07/14 06:00 [entrez]
PHST- 2011/07/14 06:00 [pubmed]
PHST- 2012/06/21 06:00 [medline]
AID - 10.1007/s10532-011-9498-5 [doi]
PST - ppublish
SO  - Biodegradation. 2012 Feb;23(1):189-98. doi: 10.1007/s10532-011-9498-5. Epub 2011 
      Jul 13.