PMID- 17709181
OWN - NLM
STAT- MEDLINE
DCOM- 20080702
LR  - 20121115
IS  - 0304-3894 (Print)
IS  - 0304-3894 (Linking)
VI  - 152
IP  - 2
DP  - 2008 Apr 1
TI  - High efficiency of batch operated biofilm hydrolytic-aerobic recycling process in 
      degradation of 2,4-dichlorophenol.
PG  - 536-44
AB  - The degradation of a model molecule, 2,4-dichlorophenol (2,4-DCP), was studied 
      using four biofilm processes: stand-alone hydrolytic process, stand-alone aerobic 
      process, hydrolytic-aerobic in-series process (in-series process) and 
      hydrolytic-aerobic recycling process (recycling process). The overall removal 
      efficiency of 2,4-DCP was far higher in the recycling process than in the 
      stand-alone hydrolytic process, the stand-alone aerobic process and the in-series 
      process. 2,4-DCP removal efficiency in the recycling process was 99% with the 
      recycling rate being 10 mL/min in 12h, while those in the stand-alone hydrolytic, 
      stand-alone aerobic and the in-series process were 96%, 82% and 89%, 
      respectively. COD removal efficiency could reach 91% in the recycling process in 
      4h whereas those were only 23%, 69% and 25% in the stand-alone hydrolytic, 
      stand-alone aerobic and the in-series process, respectively. In the recycling 
      process, the concentrations of volatile fatty acid (VFA) gradually increased to 
      3.5 mmol/L in first 5h and then declined to below 3 mmol/L, and the pH values 
      were all around 7.5 during the whole process. The alkalinity of the solution in 
      the recycling process was apparently higher than that in both the stand-alone 
      processes and in-series process within 12h. Moreover, the ratios of 
      VFA/alkalinity were all less than 0.8 in the recycling process, which indicated 
      the activity of hydrolytic microorganisms was not inhibited and the process 
      maintained a stable condition. Therefore, the recycling process could 
      successfully solve the problem of over-acidification and effectively enhanced the 
      removal efficiencies of 2,4-DCP and COD.
FAU - Li, Qingbiao
AU  - Li Q
AD  - Department of Chemical and Biochemical Engineering, College of Chemistry and 
      Chemical Engineering, Key Lab for Chemical Biology of Fujian Province, Xiamen 
      University, Xiamen 361005, China. kelqb@xmu.edu.cn
FAU - Wang, Haitao
AU  - Wang H
FAU - He, Ning
AU  - He N
FAU - Wang, Yuanpeng
AU  - Wang Y
FAU - Sun, Daohua
AU  - Sun D
FAU - Lu, Yinghua
AU  - Lu Y
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20070721
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 0 (Chlorophenols)
RN  - 0 (Industrial Waste)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - *Biodegradation, Environmental
MH  - Biofilms
MH  - *Bioreactors
MH  - Chlorophenols/*chemistry
MH  - *Industrial Waste
MH  - *Waste Management
EDAT- 2007/08/22 09:00
MHDA- 2008/07/03 09:00
CRDT- 2007/08/22 09:00
PHST- 2007/01/03 00:00 [received]
PHST- 2007/07/03 00:00 [revised]
PHST- 2007/07/09 00:00 [accepted]
PHST- 2007/08/22 09:00 [pubmed]
PHST- 2008/07/03 09:00 [medline]
PHST- 2007/08/22 09:00 [entrez]
AID - S0304-3894(07)01010-2 [pii]
AID - 10.1016/j.jhazmat.2007.07.046 [doi]
PST - ppublish
SO  - J Hazard Mater. 2008 Apr 1;152(2):536-44. doi: 10.1016/j.jhazmat.2007.07.046. 
      Epub 2007 Jul 21.