Accumulation of biopolymers in activated sludge biomass

@article{Chua1999AccumulationOB,
  title={Accumulation of biopolymers in activated sludge biomass},
  author={Hong Chua and Peter Hoi-fu Yu and Chee Keung Louis Ma},
  journal={Applied Biochemistry and Biotechnology},
  year={1999},
  volume={78},
  pages={389-399}
}
In this study, activated sludge bacteria from a conventional wastewater treatment process were induced to accumulate polyhydroxyalkanoates (PHAs) under different carbon-nitrogen (C:N) ratios. As the C:N ratio increased from 20 to 140, specific polymer yield increased to a maximum of 0.38 g of polymer/g of dry cell mass while specific growth yield decreased. The highest overall polymer production yield of 0.11 g of polymer/g of carbonaceous substrate consumed was achieved using a C:N ratio of… 
Polyhydroxyalkanoate (PHA) production in open mixed cultures using waste activated sludge as biomass
In this work, volatile fatty acids (VFAs) were used as a carbon source to assess the ability of bacteria present in waste activated sludge (WAS), as indigenous flora, to accumulate
Waste Activated Sludge as Biomass for Production of Commercial-Grade Polyhydroxyalkanoate (PHA)
PurposeThis paper presents an assessment of the production of polyhydroxyalkanoates (PHA) in biomass sourced from wastewater treatment plants (WWTPs). The purpose was to examine both the potential
Study of PHAs (polyhydroxyalkanoates) production from activated sludge.
Sludge deposition is of high concern for managers of wastewater treatment plants due to limited landfill space and increases in deposition fees. Reduction of the amount of sludge can benefit a
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Biological polymers produced by microbial fermentation are naturally biodegradable and are potential environment-friendly substitutes for synthetic plastics. However, broader applications are
Bioplastics from Waste Activated Sludge-Batch Process
Activated sludge from a full-scale pulp-paper industry wastewater treatment plant was used as a source of microorganisms to produce biodegradable plastics (polyhydroxyalkanoates) (PHA) at 25°C , pH 7
The composition analysis and preliminary cultivation optimization of a PHA-producing microbial consortium with xylose as a sole carbon source.
TLDR
Though this work is at the very beginning and the PHA yield is relatively low, producing PHA from xylose by using microbial consortia is a promising way to save the P HA production cost.
Influence of the C/N ratio on the performance of polyhydroxybutyrate (PHB) producing sequencing batch reactors at short SRTs.
TLDR
For the microbial selection and biomass production stage of a PHA production process carbon limitation seems favourable and nutrient deficient wastewaters may consequently require supplementation with nutrients for the selection of a stable PHA storing biomass with a high storage capacity.
Microstructure of copolymers of polyhydroxyalkanoates produced by glycogen accumulating organisms with acetate as the sole carbon source
The so-called glycogen accumulating organisms (GAOs), found in mixed culture anaerobic-aerobic wastewater treatment processes, are used to produce polyhydroxyalkanoates (PHAs) copolymers from a
The influence of process parameters on the characteristics of polyhydroxyalkanoates produced by mixed cultures.
TLDR
In this study PHA produced under aerobic dynamic feeding (ADF) conditions are characterized and the introduction of a purification step during the polymer extraction process allowed the elimination of possible contaminants but did not significantly improve the polymer quality.
Lipid storage compounds in raw activated sludge microorganisms for biofuels and oleochemicals production
Activated sludge contains a microbial population responsible for the biological treatment of wastewater. This microbial population mostly consists of heterothrophic bacteria which utilize the organic
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