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Chemical and Biochemical Engineering Quarterly, Vol. 33 No. 4, 2019.

Original scientific paper

https://doi.org/10.15255/CABEQ.2018.1553

Oscillatory Flow Bioreactor (OFB) Applied in Enzymatic Hydrolysis at High Solid Loadings

J. Buchmaier orcid id orcid.org/0000-0002-7066-561X ; Industrial Processes and Energy Systems, AEE – Institute for Sustainable Technologies, 8200 Gleisdorf, Feldgasse 19, Austria
C. Brunner ; Industrial Processes and Energy Systems, AEE – Institute for Sustainable Technologies, 8200 Gleisdorf, Feldgasse 19, Austria
U. Griesbacher ; Industrial Processes and Energy Systems, AEE – Institute for Sustainable Technologies, 8200 Gleisdorf, Feldgasse 19, Austria
A. N. Phan ; Newcastle University, Chemical Engineering and Advanced Materials, Newcastle upon Tyne NE1 7RU, United Kingdom
A. P. Harvey ; Newcastle University, Chemical Engineering and Advanced Materials, Newcastle upon Tyne NE1 7RU, United Kingdom
R. Krishna Gudiminchi ; Austrian Center of Industrial Biotechnology, 14 Petersgasse, 8010 Graz, Austria
B. Nidetzky orcid id orcid.org/0000-0002-5030-2643 ; Austrian Center of Industrial Biotechnology, 14 Petersgasse, 8010 Graz, Austria
B. Muster ; Industrial Processes and Energy Systems, AEE – Institute for Sustainable Technologies, 8200 Gleisdorf, Feldgasse 19, Austria

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Abstract

Within this study, an enzymatic hydrolysis process using α-cellulosic feedstock was performed in a specially designed plug-flow reactor, referred to as an Oscillatory Flow Bioreactor (OFB). The aims of this approach were to achieve intensification in terms of realising a more energy- and resource-efficient enzymatic hydrolysis, as well as to set the basis for continuous processes in such a reactor. The OFB performance was evaluated for high solid loadings of up to 15 %, and compared to the performance of a Stirred Tank Reactor (STR). Experimental results of the OFB operating at an oscillation frequency of
2 Hz and an oscillation amplitude of 10 mm exhibit better conversion efficiencies (+ 6.7 %) than the STR after 24 h, while requiring only 7 % of the STR power density (W m–3). Therefore, the OFB enables efficient, uniform mixing at lower power densities than STRs for applications with high solid loadings.







This work is licensed under a Creative Commons Attribution 4.0 International License.

Keywords

oscillatory baffled reactor; biorefinery; enzymatic hydrolysis; lignocellulosic feedstock; reactor design

Hrčak ID:

232514

URI

https://hrcak.srce.hr/232514

Publication date:

20.1.2020.

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