Increasing the economic viability of utilising CO2 from flue gas to produce biogas and bioplastic with photoautotrophic cyanobacteria
Abstract
The production of biogas and bioplastics (polyhydroxybutyric acid – PHB) from CO2-rich flue gases is a very promising approach. However, for an economically viable process, it is necessary to optimize the weak points of the process. The most important aim is to increase PHB yields from 5-10% to 30-40% of cell biomass. This will be achieved on the one hand by genetic strain improvement and on the other hand by screening for PHB producing wild type strains and a possible mutagenesis of them. A further approach is mixotrophic growth on fatty acid byproducts from the biogas hydrolysis step. In addition, cheap CO2-sources such as direct flue gas from caloric power plants or biomass combustion plants as well as CO2-rich off-gases from bioethanol production are used for growing cyanobacteria in a pilot-scale photobioreactor.
keywords polyhydroxybutyric acid biogas cyanobacteria process optimisation
Publikationen
Project staff
Bernhard Drosg
Dipl.-Ing. Dr.nat.techn. Bernhard Drosg
bernhard.drosg@boku.ac.at
Tel: +43 1 47654-97462
BOKU Project Leader
01.03.2015 - 30.06.2018
Ines Fritz
Ass.Prof. Dipl.-Ing. Dr.nat.techn. Ines Fritz
ines.fritz@boku.ac.at
Tel: +43 1 47654-97442
Sub Projectleader
01.03.2015 - 30.06.2018
Katharina Ludwig
Dr.nat.techn. Katharina Ludwig MSc.
katharina.ludwig@boku.ac.at
Tel: +43 1 47654-97482
Project Staff
01.03.2015 - 30.06.2018
BOKU partners
External partners
EVN AG
Dr. Gerald Kinger
coordinator
ANDRITZ Energy & Environment GmbH (AE&E)
Dr. Günter Gronald
partner