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Two-phase partitioning bioreactor for the biodegradation of high concentrations of pentachlorophenol using Sphingobium chlorophenolicum DSM 8671.

Zilouei, Hamid LU ; Guieysse, Benoit LU and Mattiasson, Bo LU (2008) In Chemosphere 72(11). p.1788-1794
Abstract
An organic-aqueous two-liquid-phase partitioning system was developed to degrade high concentrations of pentachlorophenol (PCP). Dioctyl sebacate was selected among 12 non-aqueous phases as the most suitable solvent to control the delivery of PCP to the aqueous phase for being non-biodegradable and biocompatible. In shake-flask experiments, the two-phase system was able to support the removal of 1g PCPl(-1) of total liquid phase. The performance of the two-liquid phase partitioning system (TLPPS) in shake-flask was evaluated under different conditions. At the initial biomass concentrations of 7, 25, and 58mg dry weightl(-1), the volumetric removal rates of PCP obtained were 25.7+/-0.5, 32.1+/-0.1, and 39.3+/-2.9mg PCP l(-1)h(-1),... (More)
An organic-aqueous two-liquid-phase partitioning system was developed to degrade high concentrations of pentachlorophenol (PCP). Dioctyl sebacate was selected among 12 non-aqueous phases as the most suitable solvent to control the delivery of PCP to the aqueous phase for being non-biodegradable and biocompatible. In shake-flask experiments, the two-phase system was able to support the removal of 1g PCPl(-1) of total liquid phase. The performance of the two-liquid phase partitioning system (TLPPS) in shake-flask was evaluated under different conditions. At the initial biomass concentrations of 7, 25, and 58mg dry weightl(-1), the volumetric removal rates of PCP obtained were 25.7+/-0.5, 32.1+/-0.1, and 39.3+/-2.9mg PCP l(-1)h(-1), respectively. Higher performance was observed at lower organic-aqueous phase ratios (16% and 28%) than higher ones (37% and 44%). In a 2-l TLPPS, the degradation of 10g PCP was completed in less than 100h at a total volumetric rate of 142mg l(-1)h(-1). Kinetics study using Monod model showed that compared to monophasic systems, the biphasic system significantly enhanced the maximum specific growth rate and PCP removal rate. Results of this biphasic system showed no accumulation of unknown by-product(s) which has been reported for physical-pretreatment or high-performance biphasic systems of PCP degradation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Chemosphere
volume
72
issue
11
pages
1788 - 1794
publisher
Elsevier
external identifiers
  • wos:000258901300025
  • pmid:18555512
  • scopus:47849108783
ISSN
1879-1298
DOI
10.1016/j.chemosphere.2008.04.035
language
English
LU publication?
yes
id
a7c6c29a-d21b-408f-aaaa-4353d9c28d5f (old id 1168780)
date added to LUP
2009-03-10 15:54:12
date last changed
2017-08-27 04:24:03
@article{a7c6c29a-d21b-408f-aaaa-4353d9c28d5f,
  abstract     = {An organic-aqueous two-liquid-phase partitioning system was developed to degrade high concentrations of pentachlorophenol (PCP). Dioctyl sebacate was selected among 12 non-aqueous phases as the most suitable solvent to control the delivery of PCP to the aqueous phase for being non-biodegradable and biocompatible. In shake-flask experiments, the two-phase system was able to support the removal of 1g PCPl(-1) of total liquid phase. The performance of the two-liquid phase partitioning system (TLPPS) in shake-flask was evaluated under different conditions. At the initial biomass concentrations of 7, 25, and 58mg dry weightl(-1), the volumetric removal rates of PCP obtained were 25.7+/-0.5, 32.1+/-0.1, and 39.3+/-2.9mg PCP l(-1)h(-1), respectively. Higher performance was observed at lower organic-aqueous phase ratios (16% and 28%) than higher ones (37% and 44%). In a 2-l TLPPS, the degradation of 10g PCP was completed in less than 100h at a total volumetric rate of 142mg l(-1)h(-1). Kinetics study using Monod model showed that compared to monophasic systems, the biphasic system significantly enhanced the maximum specific growth rate and PCP removal rate. Results of this biphasic system showed no accumulation of unknown by-product(s) which has been reported for physical-pretreatment or high-performance biphasic systems of PCP degradation.},
  author       = {Zilouei, Hamid and Guieysse, Benoit and Mattiasson, Bo},
  issn         = {1879-1298},
  language     = {eng},
  number       = {11},
  pages        = {1788--1794},
  publisher    = {Elsevier},
  series       = {Chemosphere},
  title        = {Two-phase partitioning bioreactor for the biodegradation of high concentrations of pentachlorophenol using Sphingobium chlorophenolicum DSM 8671.},
  url          = {http://dx.doi.org/10.1016/j.chemosphere.2008.04.035},
  volume       = {72},
  year         = {2008},
}