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Enhanced hexane biodegradation in a two phase partitioning bioreactor: Overcoming pollutant transport limitations

Munoz, Raul LU ; Arriaga, S ; Hernandez, S ; Guieysse, Benoit LU and Revah, S (2006) In Process Biochemistry 41(7). p.1614-1619
Abstract
The use of an organic solvent can allow to increase the mass transfer, and thereby biodegradation, of hydrophobic gaseous pollutants. The biodegradation of hexane by a Pseudomonas aeruginosa strain was thus optimized in a two phase partitioning bioreactor (TPPB). Silicone oil was first selected among various organic solvents based on its biocompatibility and resistance to R aeruginosa and its high affinity for hexane (air-organic partitioning of 0.0034). A silicone oil based TPPB was then compared with a conventional biofilter packed with foamed glass beads for the removal of hexane. The use of silicone oil significantly improved the process performance, allowing removal efficiencies (RE) and elimination capacities (EC) of 70 +/- 5% and... (More)
The use of an organic solvent can allow to increase the mass transfer, and thereby biodegradation, of hydrophobic gaseous pollutants. The biodegradation of hexane by a Pseudomonas aeruginosa strain was thus optimized in a two phase partitioning bioreactor (TPPB). Silicone oil was first selected among various organic solvents based on its biocompatibility and resistance to R aeruginosa and its high affinity for hexane (air-organic partitioning of 0.0034). A silicone oil based TPPB was then compared with a conventional biofilter packed with foamed glass beads for the removal of hexane. The use of silicone oil significantly improved the process performance, allowing removal efficiencies (RE) and elimination capacities (EC) of 70 +/- 5% and 135 +/- 17 g m(reactor)(-3), h(-1) respectively, which were approximately five times higher than those in a similar system deprived from organic phase. When a conventional packed-bed biofilter was used, the average RE and EC achieved were 74% and 12 +/- 7 g m(reactor)(-3) h(-1) respectively. This study therefore confirms the potential of TPPBs for enhancing the transport and subsequent biodegradation of poorly soluble gaseous contaminants. (Less)
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
phase partitioning bioreactors, two, mass transfer limitation, hexane, biodegradation, gas treatment
in
Process Biochemistry
volume
41
issue
7
pages
1614 - 1619
publisher
Elsevier
external identifiers
  • wos:000238237500021
  • scopus:33747380277
ISSN
1873-3298
DOI
10.1016/j.procbio.2006.03.007
language
English
LU publication?
yes
id
fc2aa869-de55-429d-be45-93b3bf65777c (old id 405844)
date added to LUP
2016-04-01 11:48:01
date last changed
2021-08-11 02:51:44
@article{fc2aa869-de55-429d-be45-93b3bf65777c,
  abstract     = {The use of an organic solvent can allow to increase the mass transfer, and thereby biodegradation, of hydrophobic gaseous pollutants. The biodegradation of hexane by a Pseudomonas aeruginosa strain was thus optimized in a two phase partitioning bioreactor (TPPB). Silicone oil was first selected among various organic solvents based on its biocompatibility and resistance to R aeruginosa and its high affinity for hexane (air-organic partitioning of 0.0034). A silicone oil based TPPB was then compared with a conventional biofilter packed with foamed glass beads for the removal of hexane. The use of silicone oil significantly improved the process performance, allowing removal efficiencies (RE) and elimination capacities (EC) of 70 +/- 5% and 135 +/- 17 g m(reactor)(-3), h(-1) respectively, which were approximately five times higher than those in a similar system deprived from organic phase. When a conventional packed-bed biofilter was used, the average RE and EC achieved were 74% and 12 +/- 7 g m(reactor)(-3) h(-1) respectively. This study therefore confirms the potential of TPPBs for enhancing the transport and subsequent biodegradation of poorly soluble gaseous contaminants.},
  author       = {Munoz, Raul and Arriaga, S and Hernandez, S and Guieysse, Benoit and Revah, S},
  issn         = {1873-3298},
  language     = {eng},
  number       = {7},
  pages        = {1614--1619},
  publisher    = {Elsevier},
  series       = {Process Biochemistry},
  title        = {Enhanced hexane biodegradation in a two phase partitioning bioreactor: Overcoming pollutant transport limitations},
  url          = {http://dx.doi.org/10.1016/j.procbio.2006.03.007},
  doi          = {10.1016/j.procbio.2006.03.007},
  volume       = {41},
  year         = {2006},
}