Production of polyhydroxyalkanoates by mixed microbial cultures

Research output: Contribution to journalArticle

175 Citations (Scopus)

Abstract

Polyhydroxyalkanoates (PHAs) are biodegradable bioplastics formed from renewable resources, like sugars, with similar characteristics of polypropylene. These bioplastics are industrially produced by pure cultures using expensive pure substrates. These factors lead to a much higher selling price of PHAs compared to petroleum-based plastics, like polypropylene. The use of mixed cultures and cheap substrates (waste materials) can reduce costs of PHA production by more than 50%. Storage of PHAs by mixed populations occurs under transient conditions mainly caused by discontinuous feeding and variation in the electron donor/acceptor presence. In the last years the mechanisms of storage, metabolism and kinetics of mixed cultures have been studied. The maximum capacity of PHA storage and production rate is dependent on the substrate and on the operating conditions used. In this paper an overview and discussion of various mechanisms and processes for PHA production by mixed cultures is presented.

Original languageEnglish
Pages (from-to)377-385
Number of pages9
JournalBioprocess and Biosystems Engineering
Volume25
Issue number6
DOIs
Publication statusPublished - 1 Jul 2003

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Polyhydroxyalkanoates
Polypropylenes
Substrates
Enzyme kinetics
Metabolism
Sugars
Sales
Crude oil
Plastics
Electrons
Petroleum
Costs
Costs and Cost Analysis
Population

Keywords

  • Activated sludge
  • Characterisation
  • Kinetics
  • Metabolism
  • Polyhydroxyalkanoates (PHAs)
  • Processes

Cite this

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Production of polyhydroxyalkanoates by mixed microbial cultures. / Reis, M. A. M.; Serafim, L. S.; Lemos, P. C.; Ramos, A. M.; Aguiar, F. R.; Van Loosdrecht, M. C. M.

In: Bioprocess and Biosystems Engineering, Vol. 25, No. 6, 01.07.2003, p. 377-385.

Research output: Contribution to journalArticle

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