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Production of polyhydroxyalkanoates by activated sludge treating a paper mill wastewater

Bengtsson, Simon LU ; Werker, Alan; Christensson, Magnus and Welander, Thomas (2008) In Bioresource Technology 99(3). p.509-516
Abstract
Production of polyhydroxyalkanoates (PHAs) in activated sludge treating wastewater represents an economical and environmental promising alternative to pure culture fermentations. A process for production of PHA from a paper mill wastewater was examined at laboratory scale. The three stage process examined consisted of acidogenic fermentation to convert wastewater organic matter to volatile fatty acids (VFAs), an activated sludge system operating under feast/famine conditions to enrich for PHA producing organisms and accumulation of PHA in batch experiments. After fermentation of the wastewater, 74% of the soluble COD was present as VFA (acetate, propionate, butyrate and valerate) and the resulting PHA after batch accumulation consisted of... (More)
Production of polyhydroxyalkanoates (PHAs) in activated sludge treating wastewater represents an economical and environmental promising alternative to pure culture fermentations. A process for production of PHA from a paper mill wastewater was examined at laboratory scale. The three stage process examined consisted of acidogenic fermentation to convert wastewater organic matter to volatile fatty acids (VFAs), an activated sludge system operating under feast/famine conditions to enrich for PHA producing organisms and accumulation of PHA in batch experiments. After fermentation of the wastewater, 74% of the soluble COD was present as VFA (acetate, propionate, butyrate and valerate) and the resulting PHA after batch accumulation consisted of 31-47 mol% hydroxybutyrate and 5369 mol% hydroxyvalerate. The maximum PHA content achieved was 48% of the sludge dry weight and the three stage process exhibited a potential to produce 0.11 kg of PHA per kg of influent COD treated. (c) 2007 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
paper mill wastewater, polyhydroxyalkanoates (PHA), mixed culture, feast/famine, activated sludge
in
Bioresource Technology
volume
99
issue
3
pages
509 - 516
publisher
Elsevier
external identifiers
  • wos:000251491200008
  • scopus:35748938454
ISSN
1873-2976
DOI
10.1016/j.biortech.2007.01.020
language
English
LU publication?
yes
id
1d667c97-cf58-4f8d-a82b-77fcf51fdf23 (old id 966409)
date added to LUP
2009-07-10 15:00:31
date last changed
2017-11-12 03:45:47
@article{1d667c97-cf58-4f8d-a82b-77fcf51fdf23,
  abstract     = {Production of polyhydroxyalkanoates (PHAs) in activated sludge treating wastewater represents an economical and environmental promising alternative to pure culture fermentations. A process for production of PHA from a paper mill wastewater was examined at laboratory scale. The three stage process examined consisted of acidogenic fermentation to convert wastewater organic matter to volatile fatty acids (VFAs), an activated sludge system operating under feast/famine conditions to enrich for PHA producing organisms and accumulation of PHA in batch experiments. After fermentation of the wastewater, 74% of the soluble COD was present as VFA (acetate, propionate, butyrate and valerate) and the resulting PHA after batch accumulation consisted of 31-47 mol% hydroxybutyrate and 5369 mol% hydroxyvalerate. The maximum PHA content achieved was 48% of the sludge dry weight and the three stage process exhibited a potential to produce 0.11 kg of PHA per kg of influent COD treated. (c) 2007 Elsevier Ltd. All rights reserved.},
  author       = {Bengtsson, Simon and Werker, Alan and Christensson, Magnus and Welander, Thomas},
  issn         = {1873-2976},
  keyword      = {paper mill wastewater,polyhydroxyalkanoates (PHA),mixed culture,feast/famine,activated sludge},
  language     = {eng},
  number       = {3},
  pages        = {509--516},
  publisher    = {Elsevier},
  series       = {Bioresource Technology},
  title        = {Production of polyhydroxyalkanoates by activated sludge treating a paper mill wastewater},
  url          = {http://dx.doi.org/10.1016/j.biortech.2007.01.020},
  volume       = {99},
  year         = {2008},
}