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Synthesis of PHAs from waster under various C:N ratios

  • Y. J. Wang
  • , F. L. Hua
  • , Y. F. Tsang
  • , S. Y. Chan
  • , S. N. Sin
  • , H. Chua*
  • , P. H.F. Yu
  • , N. Q. Ren
  • *Corresponding author for this work
  • Hong Kong Polytechnic University

Research output: Contribution to journalArticlepeer-review

Abstract

Polyhydroxyalkanoates (PHAs) production was carried out under various C:N ratios. A ratio of 100 resulted best polymer yield. C-source was an important factor in synthesis. For example, as the ratio of valeric acid (C5) to butyric acid (C4) in N-free medium was increased, the mole fraction of HV in the copolymer increased. When soy waste was used as a C-source a copolymer, a high HV mole fraction (HB:HV, 75:25) was produced while when malt waste was used, a much lower HV mole fraction (HB:HV, 90:10) was generated. It was concluded that activated sludge bacteria could be induced to produce PHAs using food wastes as C-sources and this could be the basis for production of biodegradable plastics.

Original languageEnglish
Pages (from-to)1690-1693
Number of pages4
JournalBioresource Technology
Volume98
Issue number8
DOIs
StatePublished - May 2007

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Activated sludge
  • PHAs
  • PHB-PHV
  • Waste

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