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Biopolymers production from mixed cultures and pyrolysis by-products

Paper ID Volume ID Publish Year Pages File Format Full-Text
23917 43482 2012 6 PDF Available
Title
Biopolymers production from mixed cultures and pyrolysis by-products
Abstract

Polyhydroxyalkanoates (PHAs) production from low value substrates and/or byproducts represents an economical and environmental promising alternative to established industrial manufacture methods. Bio-oil resulting from the fast-pyrolysis of chicken beds was used as substrate to select a mixed microbial culture (MMC) able to produce PHA under feast/famine conditions. In this study a maximum PHA content of 9.2% (g/g cell dry weight) was achieved in a sequencing batch reactor (SBR) operated for culture selection. The PHA obtained with bio-oil as a carbon source was a copolymer composed by 70% of hydroxybutyrate (HB) and 30% of hydroxyvalerate (HV) monomers. Similar results have been reported by other studies that use real complex substrates for culture selection indicating that bio-oil can be a promising feedstock to produce PHAs using MMC. To the best of our knowledge this is the first study that demonstrated the use of bio-oil resulting from fast pyrolysis as a possibly feedstock to produce short chain length polyhydroxyalkanoates.

► Bio-oil from the fast-pyrolysis of chicken beds as substrate for PHA production. ► The SBR for mixed culture selection had a PHA content of 9.2%. ► A PHA copolymer was obtained (70% HB: 30% HV). ► First study using mixed cultures and bio-oil as feedstock to produce SCL-PHA.

Keywords
Fast pyrolysis; Bio-oil; Polyhydroxyalkanoates; Mixed microbial cultures
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 157, Issue 4, 20 February 2012, Pages 578–583
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us