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Combined carbon and nitrogen removal from acetonitrile using algal-bacterial bioreactors

Munoz, Raul LU ; Jacinto, Marco; Guieysse, Benoit LU and Mattiasson, Bo LU (2005) In Applied Microbiology and Biotechnology 67(5). p.699-707
Abstract
When compared with Chlorella vulgaris, Scenedesmus obliquus and Selenastrum capricornutum, C. sorokiniana presented the highest tolerance to acetonitrile and the highest O-2 production capacity. It also supported the fastest acetonitrile biodegradation when mixed with a suitable acetonitrile-degrading bacterial consortium. Consequently, this microalga was tested in symbiosis with the bacterial culture for the continuous biodegradation of acetonitrile at 2 g l(-1) in a stirred tank photobioreactor and in a column photobioreactor under continuous illumination (250 mu E m(-2) s(-1)). Acetonitrile removal rates of up to 2.3 g l(-1) day(-1) and 1.9 g l(-1) day(-1) were achieved in the column photobioreactor and the stirred-tank photobioreactor,... (More)
When compared with Chlorella vulgaris, Scenedesmus obliquus and Selenastrum capricornutum, C. sorokiniana presented the highest tolerance to acetonitrile and the highest O-2 production capacity. It also supported the fastest acetonitrile biodegradation when mixed with a suitable acetonitrile-degrading bacterial consortium. Consequently, this microalga was tested in symbiosis with the bacterial culture for the continuous biodegradation of acetonitrile at 2 g l(-1) in a stirred tank photobioreactor and in a column photobioreactor under continuous illumination (250 mu E m(-2) s(-1)). Acetonitrile removal rates of up to 2.3 g l(-1) day(-1) and 1.9 g l(-1) day(-1) were achieved in the column photobioreactor and the stirred-tank photobioreactor, respectively, when operated at the shortest retention times tested (0.4 days, 0.6 days, respectively). In addition, when the stirred-tank photobioreactor was operated with a retention time of 3.5 days, the microbial culture was capable of assimilating up to 71% and nitrifying up to 12% of the NH4+ theoretically released through the biodegradation of acetonitrile, thus reducing the need for subsequent nitrogen removal. This study suggests that complete removal of N-organics can be combined with a significant removal of nitrogen by using algal - bacterial systems and that further residual biomass digestion could pay-back part of the operation costs of the treatment plant. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Microbiology and Biotechnology
volume
67
issue
5
pages
699 - 707
publisher
Springer
external identifiers
  • wos:000229722400016
  • pmid:15666149
  • scopus:21244467549
ISSN
1432-0614
DOI
10.1007/s00253-004-1811-3
language
English
LU publication?
yes
id
74a76d67-2331-4e9c-ad98-8732376ecfe8 (old id 155147)
date added to LUP
2007-07-02 14:10:35
date last changed
2017-08-20 04:30:30
@article{74a76d67-2331-4e9c-ad98-8732376ecfe8,
  abstract     = {When compared with Chlorella vulgaris, Scenedesmus obliquus and Selenastrum capricornutum, C. sorokiniana presented the highest tolerance to acetonitrile and the highest O-2 production capacity. It also supported the fastest acetonitrile biodegradation when mixed with a suitable acetonitrile-degrading bacterial consortium. Consequently, this microalga was tested in symbiosis with the bacterial culture for the continuous biodegradation of acetonitrile at 2 g l(-1) in a stirred tank photobioreactor and in a column photobioreactor under continuous illumination (250 mu E m(-2) s(-1)). Acetonitrile removal rates of up to 2.3 g l(-1) day(-1) and 1.9 g l(-1) day(-1) were achieved in the column photobioreactor and the stirred-tank photobioreactor, respectively, when operated at the shortest retention times tested (0.4 days, 0.6 days, respectively). In addition, when the stirred-tank photobioreactor was operated with a retention time of 3.5 days, the microbial culture was capable of assimilating up to 71% and nitrifying up to 12% of the NH4+ theoretically released through the biodegradation of acetonitrile, thus reducing the need for subsequent nitrogen removal. This study suggests that complete removal of N-organics can be combined with a significant removal of nitrogen by using algal - bacterial systems and that further residual biomass digestion could pay-back part of the operation costs of the treatment plant.},
  author       = {Munoz, Raul and Jacinto, Marco and Guieysse, Benoit and Mattiasson, Bo},
  issn         = {1432-0614},
  language     = {eng},
  number       = {5},
  pages        = {699--707},
  publisher    = {Springer},
  series       = {Applied Microbiology and Biotechnology},
  title        = {Combined carbon and nitrogen removal from acetonitrile using algal-bacterial bioreactors},
  url          = {http://dx.doi.org/10.1007/s00253-004-1811-3},
  volume       = {67},
  year         = {2005},
}