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June 20, 2026

Efficient Routes for the Purification of Polyhydroxyalkanoates from Mixed Cultures in Wastewater Sludge

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Authors

NCNatalia CuevasJGJeniffer GraciaICIván Cabeza

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Overview

Randomized trial identifies effective methods for purifying polyhydroxyalkanoates from mixed cultures, indicating potential for sustainable plastics.

Key Points

  • This research aims to find efficient methods for extracting and purifying polyhydroxyalkanoates (PHAs) from wastewater sludge.
  • Designed a fermentation process for selecting PHA-producing microorganisms.
  • Evaluated three cell lysis reagents (18% SDS, 4% NaOH, 20% H2SO4) and tested different acetic acid concentrations.
  • Used two methanol purification methods (solvent casting and precipitation) and analyzed results through gravimetry and HPLC.
  • The optimal lysis with SDS (10 ml/g), extraction with acetic acid (15 ml/g), and purification with methanol (100 ml/g) yielded 1.22%.
  • The recovery rate of the process was 54.61% with a purity level of 19.62%.
  • This method significantly optimizes PHA recovery compared to other techniques.

Cite This Study

Cuevas et al. (2026) studied this question.

synapsesocial.com/papers/6a3631fbdb0793dc1a538b5bhttps://doi.org/10.3303/cet26125064
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