PMID- 16468408
OWN - NLM
STAT- MEDLINE
DCOM- 20060705
LR  - 20190715
IS  - 0013-936X (Print)
IS  - 0013-936X (Linking)
VI  - 40
IP  - 2
DP  - 2006 Jan 15
TI  - An oil-absorber-bioscrubber system to stabilize biotreatment of pollutants 
      present in waste gas. Fluctuating loads of 1,2-dichloroethane.
PG  - 595-602
AB  - Biotreatment technologies offer a cost-effective and efficient method for dealing 
      with point-source releases of solvents. However, a major problem hampering these 
      technologies is the fluctuating pollutant loads, which is especially critical for 
      inhibitory pollutants. Provision of biotreatment systems able to cope with this 
      problem is a significant technological and environmental challenge. This study 
      investigates the potential for an absorber to act as buffer for shock loadings of 
      inhibitory pollutants in waste-gas streams undergoing biological treatment. 
      1,2-Dichloroethane (DCE) was used as an example of a toxic and inhibitory organic 
      pollutant. The stability of a combined oil-absorber-bioscrubber (OAB) system was 
      compared to that of a bioscrubber only (BO) system when each was subjected to 
      shock loads of DCE. The BO system was inoculated with Xanthobacter autotrophicus 
      strain GJ10 and was submitted to sharp, sequential pulses in DCE inlet load, 
      which caused system instability. Complete inhibition of the BO process occurred 
      for a 3 h DCE pulse, leading to 9125 g of DCE m(-3)bioscrubber total organic 
      discharged (TODDCE). Following the pulse, fluorescence in situ hybridization 
      (FISH) showed that the active strain GJ10 was effectively washed-out. In 
      contrast, the performance of the OAB system was stable during DCE shock loads. 
      The carbon dioxide production remained stable, and low levels of effluent DCE and 
      total organic carbon concentrations were found. For the 3 h pulse TODDCE was only 
      173 g of DCE m(-3)bioscrubber, and FISH indicated that the GJ10 strain remained 
      active. We conclude that the OAB system offers an effective solution to the 
      biological treatment of waste-gas containing fluctuating pollutant 
      concentrations.
FAU - Koutinas, Michalis
AU  - Koutinas M
AD  - Department of Chemical Engineering and Chemical Technology, Imperial College 
      London, United Kingdom.
FAU - Martin, James
AU  - Martin J
FAU - Peeva, Ludmila G
AU  - Peeva LG
FAU - Mantalaris, Athanasios
AU  - Mantalaris A
FAU - Livingston, Andrew G
AU  - Livingston AG
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Air Pollutants)
RN  - 0 (Ethylene Dichlorides)
RN  - 0 (Oils)
RN  - 55163IJI47 (ethylene dichloride)
SB  - IM
MH  - Air Pollutants/*chemistry/metabolism
MH  - Ethylene Dichlorides/*chemistry/metabolism
MH  - *Oils
MH  - Xanthobacter/*metabolism
EDAT- 2006/02/14 09:00
MHDA- 2006/07/06 09:00
CRDT- 2006/02/14 09:00
PHST- 2006/02/14 09:00 [pubmed]
PHST- 2006/07/06 09:00 [medline]
PHST- 2006/02/14 09:00 [entrez]
AID - 10.1021/es051073r [doi]
PST - ppublish
SO  - Environ Sci Technol. 2006 Jan 15;40(2):595-602. doi: 10.1021/es051073r.