Co-production of bio-oil and propylene through the hydrothermal liquefaction of polyhydroxybutyrate producing cyanobacteria

Wagner, J; Bransgrove, R; Beacham, TA; Allen, MJ; Meixner, K; Drosg, B; Ting, VP; Chuck, CJ.. 2016 Co-production of bio-oil and propylene through the hydrothermal liquefaction of polyhydroxybutyrate producing cyanobacteria. Bioresource Technology, 207. 166-174. 10.1016/j.biortech.2016.01.114

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Official URL: http://dx.doi.org/10.1016/j.biortech.2016.01.114

Abstract/Summary

A polyhydroxybutyrate (PHB) producing cyanobacteria was converted through hydrothermal liquefaction (HTL) into propylene and a bio-oil suitable for advanced biofuel production. HTL of model compounds demonstrated that in contrast to proteins and carbohydrates, no synergistic effects were detected when converting PHB in the presence of algae. Subsequently, Synechocystis cf. salina, which had accumulated 7.5wt% PHB was converted via HTL (15% dry weight loading, 340°C). The reaction gave an overall propylene yield of 2.6%, higher than that obtained from the model compounds, in addition to a bio-oil with a low nitrogen content of 4.6%. No propylene was recovered from the alternative non-PHB producing cyanobacterial strains screened, suggesting that PHB is the source of propylene. PHB producing microorganisms could therefore be used as a feedstock for a biorefinery to produce polypropylene and advanced biofuels, with the level of propylene being proportional to the accumulated amount of PHB.

Item Type: Publication - Article
Subjects: Ecology and Environment
Divisions: Plymouth Marine Laboratory > Science Areas > Marine Biochemistry and Observations
Depositing User: Mike Allen
Date made live: 10 Jun 2016 10:09
Last Modified: 06 Jun 2017 16:16
URI: http://plymsea.ac.uk/id/eprint/7086

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