Chlorine-free Extractions of Mixed-Culture Polyhydroxyalkanoates Produced from Fermented Sewage Sludge at Pilot Scale
Gaia Salvatori,
Sara Alfano,
Andrea Martinelli
et al.
Abstract:In this study, various conventional and innovative methods were investigated for the recovery of polyhydroxyalkanoates (PHA) from a single batch of biomass produced at a pilot scale from mixed microbial cultures (MMCs) and fermented sewage sludge as a feedstock. Sustainable chlorine-free methods using NaOH and/or H 2 O 2 , as well as extraction in nontoxic ethyl acetate, were analyzed. Interestingly, the combined treatment of biomass with NaOH and H 2 O 2 solutions demonstrated good recovery (70 wt %) and high… Show more
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