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Biofilm photobioreactors for the treatment of industrial wastewaters.

Munoz, Raul LU ; Köllner, Claudia and Guieysse, Benoit LU (2009) In Journal of Hazardous Materials 161(1). p.29-34
Abstract
A flat plate and a tubular packed-bed photobioreactor with an algal-bacterial biofilm attached onto Poraver((R)) beads carriers, a flat plate and a tubular photobioreactor with the biofilm attached onto the reactor walls, and an algal-turf reactor were compared in terms of BOD removal efficiencies, elimination capacities, and stability. A control column photobioreactor with suspended algal-bacterial biomass was also tested to compare the performance of biofilm photobioreactors with conventional algal-based processes. When the algal-bacterial biomass was immobilized onto Poraver((R)) the process never reached a steady state due to a poor homogenization in the bioreactor. When the biofilm was formed onto the reactor wall (or reactor base)... (More)
A flat plate and a tubular packed-bed photobioreactor with an algal-bacterial biofilm attached onto Poraver((R)) beads carriers, a flat plate and a tubular photobioreactor with the biofilm attached onto the reactor walls, and an algal-turf reactor were compared in terms of BOD removal efficiencies, elimination capacities, and stability. A control column photobioreactor with suspended algal-bacterial biomass was also tested to compare the performance of biofilm photobioreactors with conventional algal-based processes. When the algal-bacterial biomass was immobilized onto Poraver((R)) the process never reached a steady state due to a poor homogenization in the bioreactor. When the biofilm was formed onto the reactor wall (or reactor base) the process was stable. A maximum degradation rate of 295mg BODl(-1)h(-1) was achieved in the algal-turf reactor although control experiments performed in the dark showed atmospheric O(2) diffusion represented 55% of the oxygenation capacity in this system. BOD removal rates of 108, and 92mg BODl(-1)h(-1) were achieved in the tubular and flat plate biofilm reactors, respectively, compared to 77mg BODl(-1)h(-1) in the control suspended bioreactor. In addition, all biofilm photobioreactors produced an easily settleable biomass. Evidence was found that biomass attachment to the reactor's wall improved stability. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Hazardous Materials
volume
161
issue
1
pages
29 - 34
publisher
Elsevier
external identifiers
  • wos:000262328000003
  • pmid:18436371
  • scopus:56349086594
ISSN
1873-3336
DOI
10.1016/j.jhazmat.2008.03.018
language
English
LU publication?
yes
id
9439439b-8997-4682-b304-33760a4696bd (old id 1147071)
date added to LUP
2009-03-09 09:26:07
date last changed
2017-12-10 03:44:58
@article{9439439b-8997-4682-b304-33760a4696bd,
  abstract     = {A flat plate and a tubular packed-bed photobioreactor with an algal-bacterial biofilm attached onto Poraver((R)) beads carriers, a flat plate and a tubular photobioreactor with the biofilm attached onto the reactor walls, and an algal-turf reactor were compared in terms of BOD removal efficiencies, elimination capacities, and stability. A control column photobioreactor with suspended algal-bacterial biomass was also tested to compare the performance of biofilm photobioreactors with conventional algal-based processes. When the algal-bacterial biomass was immobilized onto Poraver((R)) the process never reached a steady state due to a poor homogenization in the bioreactor. When the biofilm was formed onto the reactor wall (or reactor base) the process was stable. A maximum degradation rate of 295mg BODl(-1)h(-1) was achieved in the algal-turf reactor although control experiments performed in the dark showed atmospheric O(2) diffusion represented 55% of the oxygenation capacity in this system. BOD removal rates of 108, and 92mg BODl(-1)h(-1) were achieved in the tubular and flat plate biofilm reactors, respectively, compared to 77mg BODl(-1)h(-1) in the control suspended bioreactor. In addition, all biofilm photobioreactors produced an easily settleable biomass. Evidence was found that biomass attachment to the reactor's wall improved stability.},
  author       = {Munoz, Raul and Köllner, Claudia and Guieysse, Benoit},
  issn         = {1873-3336},
  language     = {eng},
  number       = {1},
  pages        = {29--34},
  publisher    = {Elsevier},
  series       = {Journal of Hazardous Materials},
  title        = {Biofilm photobioreactors for the treatment of industrial wastewaters.},
  url          = {http://dx.doi.org/10.1016/j.jhazmat.2008.03.018},
  volume       = {161},
  year         = {2009},
}