PMID- 12111171
OWN - NLM
STAT- MEDLINE
DCOM- 20020910
LR  - 20121115
IS  - 0175-7598 (Print)
IS  - 0175-7598 (Linking)
VI  - 59
IP  - 2-3
DP  - 2002 Jul
TI  - Effects of 2,4-dichlorophenol on activated sludge.
PG  - 361-7
AB  - The effects of 2,4-dichlorophenol (2,4-DCP) on both acclimated and unacclimated 
      activated sludge were investigated in batch reactors. The IC(50) values on the 
      basis of maximum specific growth rate ( micro(m)), percent chemical oxygen demand 
      (COD) removal efficiency and sludge activity were found to be 72, 60 and 47 mg 
      l(-1), respectively, for unacclimated culture. The percent COD removal 
      efficiencies of unacclimated culture were affected adversely, even at low 
      concentrations, whereas culture acclimated to 75 mg 2,4-DCP l(-1) could tolerate 
      about 200 mg 2,4-DCP l(-1)on the basis of COD removal efficiency. Although yield 
      coefficient values of unacclimated culture increased surprisingly to very high 
      values with the addition of 2,4-DCP, a linear decrease with respect to 2,4-DCP 
      concentrations was observed for acclimated culture. Although no removal was 
      observed with unacclimated culture, almost complete removal of 2,4-DCP up to a 
      concentration of 148.7 mg l(-1) was observed with acclimated culture. It was 
      showed that the culture could use 2,4-DCP as sole organic carbon source, although 
      higher removal efficiencies in the presence of a readily degradable substrate 
      were observed. Culture acclimated to 4-chlorophenol used 2,4-DCP as sole organic 
      carbon source better than those acclimated to 2,4-DCP.
FAU - Sahinkaya, E
AU  - Sahinkaya E
AD  - Environmental Engineering Department, Middle East Technical University, 06531 
      Ankara, Turkey.
FAU - Dilek, F B
AU  - Dilek FB
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20020601
PL  - Germany
TA  - Appl Microbiol Biotechnol
JT  - Applied microbiology and biotechnology
JID - 8406612
RN  - 0 (Chlorophenols)
RN  - 0 (Sewage)
RN  - 3DLC36A01X (4-chlorophenol)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Bioreactors
MH  - Chlorophenols/metabolism/*toxicity
MH  - Chromatography, High Pressure Liquid
MH  - *Sewage
EDAT- 2002/07/12 10:00
MHDA- 2002/09/11 10:01
CRDT- 2002/07/12 10:00
PHST- 2001/10/19 00:00 [received]
PHST- 2002/02/25 00:00 [revised]
PHST- 2002/03/07 00:00 [accepted]
PHST- 2002/07/12 10:00 [pubmed]
PHST- 2002/09/11 10:01 [medline]
PHST- 2002/07/12 10:00 [entrez]
AID - 10.1007/s00253-002-0989-5 [doi]
PST - ppublish
SO  - Appl Microbiol Biotechnol. 2002 Jul;59(2-3):361-7. doi: 
      10.1007/s00253-002-0989-5. Epub 2002 Jun 1.