PMID- 15327153
OWN - NLM
STAT- MEDLINE
DCOM- 20041006
LR  - 20191108
IS  - 0167-6369 (Print)
IS  - 0167-6369 (Linking)
VI  - 96
IP  - 1-3
DP  - 2004 Aug-Sep
TI  - Kinetics of biotransformation of 2,4-dichlorophenol using UASB-reactor.
PG  - 129-41
AB  - Chlorophenol compounds are environmental pollutants that are both anthropogenic 
      and xenobiotics. Some of these chemicals are carcinogens and are both toxic to a 
      number biochemical processes. Biotransformation of 2,4-dichlorophenol (2,4-DCP) 
      was studied in the presence of glucose on an upflow anaerobic sludge blanket 
      reactor (UASB) using mixed culture. A continuously operated UASB reactor was 
      employed using mixed synthetic wastewater. Results obtained from the 1.8 L volume 
      capacity UASB reactor were subjected to kinetic evaluation constants. Results 
      indicate that the degradation of 2,4-DCP in the presence of glucose was strongly 
      influenced by the concentration of the compound. High degradation levels were 
      observed when the concentration of 2,4-DCP was in the range of 50-150 mg L(-1). 
      Concentrations of 2,4-DCP above 160 mg L(-1) were toxic to microbes even in the 
      presence of glucose. The maximum degradation of 2,4-DCP was found to be 70.4% 
      when initial concentration of 2,4-DCP was 124 mg L(-1) and glucose concentration 
      of 500 mg L(-1) at hydraulic retention time of 13.2 hr. The biodegradation 
      followed first order reaction kinetics with a rate constant (K) of 0.67, Vmax of 
      0.244 kg m(-3) day(-1), Ks of 0.117 kg m(-3) day(-1) and correlation coefficient 
      of 0.766.
FAU - Atuanya, E I
AU  - Atuanya EI
AD  - Department of Microbiology, University of Benin, Benin City, Nigeria. 
      atuei@uniben.edu.ng
FAU - Chakrabarti, T
AU  - Chakrabarti T
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Netherlands
TA  - Environ Monit Assess
JT  - Environmental monitoring and assessment
JID - 8508350
RN  - 0 (Anthelmintics)
RN  - 0 (Chlorophenols)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Anaerobiosis
MH  - Anthelmintics
MH  - *Bioreactors
MH  - Biotransformation
MH  - Chlorophenols/*pharmacokinetics
MH  - Kinetics
EDAT- 2004/08/26 05:00
MHDA- 2004/10/07 09:00
CRDT- 2004/08/26 05:00
PHST- 2004/08/26 05:00 [pubmed]
PHST- 2004/10/07 09:00 [medline]
PHST- 2004/08/26 05:00 [entrez]
AID - 10.1023/b:emas.0000031720.86980.2e [doi]
PST - ppublish
SO  - Environ Monit Assess. 2004 Aug-Sep;96(1-3):129-41. doi: 
      10.1023/b:emas.0000031720.86980.2e.