PMID- 18656222
OWN - NLM
STAT- MEDLINE
DCOM- 20090107
LR  - 20151119
IS  - 0043-1354 (Print)
IS  - 0043-1354 (Linking)
VI  - 42
IP  - 14
DP  - 2008 Aug
TI  - Biodegradation of 2-fluorobenzoate and dichloromethane under simultaneous and 
      sequential alternating pollutant feeding.
PG  - 3857-69
LID - 10.1016/j.watres.2008.05.011 [doi]
AB  - Two up-flow fixed-bed reactors (UFBRs), inoculated with activated sludge and 
      operated for 162 days, were fed 1mmolL(-1)d(-1) with two model halogenated 
      compounds, 2-fluorobenzoate (2-FB) and dichloromethane (DCM). Expanded clay (EC) 
      and granular activated carbon (GAC) were used as biofilm carrier. EC did not have 
      any adsorption capacity for both model compounds tested, whereas GAC could adsorb 
      1.3mmolg(-1) GAC for 2-FB and 4.5mmolg(-1) GAC for DCM. Both pollutants were 
      degraded in both reactors under simultaneous feeding. However, biodegradation in 
      the EC reactor was more pronounced, and re-inoculation of the GAC reactor was 
      required to initiate 2-FB degradation. Imposing sequential alternating pollutant 
      (SAP) feeding caused starvation periods in the EC reactor, requiring 
      time-consuming recovery of 2-FB biodegradation after resuming its feeding, 
      whereas DCM degradation recovered significantly faster. The SAP feeding did not 
      affect performance in the GAC reactor as biodegradation of both pollutants was 
      continuously observed during SAP feeding, indicating the absence of true 
      starvation.
FAU - Osuna, M Begona
AU  - Osuna MB
AD  - Escola Superior de Biotecnologia, Universidade Catolica Portuguesa, 4200-072 
      Porto, Portugal; CSIC-CEAB, Blanes, Spain. bosuna@ceab.ceic.es
FAU - Sipma, Jan
AU  - Sipma J
FAU - Emanuelsson, Maria A E
AU  - Emanuelsson MA
FAU - Carvalho, M Fatima
AU  - Carvalho MF
FAU - Castro, Paula M L
AU  - Castro PM
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20080621
PL  - England
TA  - Water Res
JT  - Water research
JID - 0105072
RN  - 0 (Benzoates)
RN  - 0 (Sewage)
RN  - 0 (Water Pollutants, Chemical)
RN  - 588X2YUY0A (Methylene Chloride)
RN  - 64UZ32KOO4 (2-fluorobenzoic acid)
SB  - IM
MH  - Bacteria/metabolism
MH  - Benzoates/*chemistry/metabolism
MH  - *Biodegradation, Environmental
MH  - Bioreactors
MH  - Methylene Chloride/*chemistry/metabolism
MH  - Sewage/chemistry/microbiology
MH  - Time Factors
MH  - Water Pollutants, Chemical/*chemistry/metabolism
MH  - Water Purification
EDAT- 2008/07/29 09:00
MHDA- 2009/01/08 09:00
CRDT- 2008/07/29 09:00
PHST- 2008/01/30 00:00 [received]
PHST- 2008/05/02 00:00 [revised]
PHST- 2008/05/09 00:00 [accepted]
PHST- 2008/07/29 09:00 [pubmed]
PHST- 2009/01/08 09:00 [medline]
PHST- 2008/07/29 09:00 [entrez]
AID - S0043-1354(08)00231-5 [pii]
AID - 10.1016/j.watres.2008.05.011 [doi]
PST - ppublish
SO  - Water Res. 2008 Aug;42(14):3857-69. doi: 10.1016/j.watres.2008.05.011. Epub 2008 
      Jun 21.