Up-scale challenges on biopolymer production from waste streams by Purple Phototrophic Bacteria mixed cultures: A critical review

Joana Fradinho, L. D. Allegue, M. Ventura, J. A. Melero, Maria A. M. Reis, D. Puyol

Research output: Contribution to journalReview articlepeer-review

4 Citations (Scopus)
1 Downloads (Pure)

Abstract

The increasing volume of waste streams require new biological technologies that can address pollution concerns while offering sustainable products. Purple phototrophic bacteria (PPB) are very versatile organisms that present a unique metabolism that allows them to adapt to a variety of environments, including the most complex waste streams. Their successful adaptation to such demanding conditions is partly the result of internal polymers accumulation which can be stored for electron/energy balance or as carbon and nutrients reserves for deprivation periods. Polyhydroxyalkanoates, glycogen, sulphur and polyphosphate are examples of polymers produced by PPB that can be economically explored due to their applications in the plastic, energy and fertilizers sectors. Their large-scale production implies the outdoor operation of PPB systems which brings new challenges, identified in this review. An overview of the current PPB polymer producing technologies and prospects for their future development is also provided.

Original languageEnglish
Article number124820
JournalBioresource Technology
Volume327
DOIs
Publication statusPublished - May 2021

Keywords

  • Anoxygenic photosynthesis
  • Photobioreactors
  • Polyhydroxyalkanoates
  • Polyphosphate
  • Purple phototrophic bacteria

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