Journal ArticleDOI
Up-Cycling of PET (Polyethylene Terephthalate) to the Biodegradable Plastic PHA (Polyhydroxyalkanoate)
Shane T. Kenny,Jasmina Nikodinovic Runic,Walter Kaminsky,Trevor Woods,Ramesh Babu,Chris M. Keely,Werner J. Blau,Kevin E. O’Connor +7 more
TLDR
The conversion of the petrochemical polymer polyethylene terephthalate to a biodegradable plastic polyhydroxyal-kanoate (PHA) is described here and PHA was detected in all three strains when nitrogen depleted below detectable levels in the growth medium.Abstract:
The conversion of the petrochemical polymer polyethylene terephthalate (PET) to a biodegradable plastic polyhydroxyalkanoate (PHA) is described here. PET was pyrolised at 450 °C resulting in the production of a solid, liquid, and gaseous fraction. The liquid and gaseous fractions were burnt for energy recovery, whereas the solid fraction terephthalic acid (TA) was used as the feedstock for bacterial production of PHA. Strains previously reported to grow on TA were unable to accumulate PHA. We therefore isolated bacteria from soil exposed to PET granules at a PET bottle processing plant. From the 32 strains isolated, three strains capable of accumulation of medium chain length PHA (mclPHA) from TA as a sole source of carbon and energy were selected for further study. These isolates were identified using 16S rDNA techniques as P. putida (GO16), P. putida (GO19), and P. frederiksbergensis (GO23). P. putida GO16 and GO19 accumulate PHA composed predominantly of a 3-hydroxydecanoic acid monomer while P. freder...read more
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From Organic Wastes and Hydrocarbons Pollutants to Polyhydroxyalkanoates: Bioconversion by Terrestrial and Marine Bacteria
TL;DR: The use of fossil-based plastics has become unsustainable because of the polluting production processes, difficulties for waste management sectors, and high environmental impact as mentioned in this paper , and therefore, the use of such materials is becoming unsustainable.
Journal ArticleDOI
Characterization of tars from recycling of PHA bioplastic and synthetic plastics using fast pyrolysis
Feyza Kazanç,d6xjgds400 +1 more
TL;DR: In this paper , the pyrolysis products of polyhydroxyalkanoates (PHAs), polyethylene terephthalate (PET), carbon fiber reinforced composite (CFRC), and block co-polymers were investigated.
Is biofilm formation a critical step for the valorisation of plastic waste
TL;DR: The site MatheO as mentioned in this paper adopts a similar principle to the "Budapest Open Access Initiative" (BOAI, 2002) in that l'utilisateur of the site peut lire, télécharger, copier, transmettre, imprimer, crediting, and crediting documents.
Journal ArticleDOI
Hydrothermally processed polyethylene as starting point for fermentative production of triglycerides
Teba Torres-Zapata,Patricia Lozano-Martínez,M. V. Martinez-Lorenzo,Rubén M. Buey,Nicolas Martin-Sanchez +4 more
TL;DR: In this article , a two-stage approach was used to transform polyethylene (PE) into triglycerides (TGs) by treating PE oil at 425ºC for 120 min and then using it for fermentation with Yarrowia lipolytica.
References
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Occurrence, metabolism, metabolic role, and industrial uses of bacterial polyhydroxyalkanoates.
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TL;DR: The physiological functions of PHB as a reserve material and in symbiotic nitrogen fixation and its presence in bacterial plasma membranes and putative role in transformability and calcium signaling are also considered.
Journal ArticleDOI
A rapid gas chromatographic method for the determination of poly- β -hydroxybutyric acid in microbial biomass
TL;DR: The gas chromatographic method for the determination of poly-β-hydroxybutyric acid (PHB) is characterized by high accuracy and excellent reproducibility, permitting determinations as low as 10−5 g/l.
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