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Consolidated bioprocessing of lignocellulosic biomass for production of lactic acid and mixed carboxylic acids as fuel precursor

English title Consolidated bioprocessing of lignocellulosic biomass for production of lactic acid and mixed carboxylic acids as fuel precursor
Applicant Studer Michael Hans-Peter
Number 153868
Funding scheme NRP 70 Energy Turnaround
Research institution Hochschule für Agrar-, Forst- und Lebensmittelwissenschaften HAFL Berner Fachhochschule BFH
Institution of higher education Berne University of Applied Sciences - BFH
Main discipline Other disciplines of Engineering Sciences
Start/End 01.12.2014 - 31.12.2018
Approved amount 468'988.00
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All Disciplines (3)

Discipline
Other disciplines of Engineering Sciences
Chemical Engineering
Experimental Microbiology

Keywords (7)

biofilm; fermentation; lactic acid; carboxylic acids; lignocellulosic biomass; enzymatic hydrolysis; consolidated bioprocess

Lay Summary (German)

Lead
Um die Abhängigkeit der heutigen Gesellschaft von fossilen Treibstoffen zu verringern, ist es notwendig, alternative Rohstoffquellen zu erschliessen. Zu diesem Zweck werden in aktuellen Forschungsarbeiten sogenannte Bioraffeneriekonzepte enwickelt, welche die Umwandlung von lignozellulosehaltiger Biomasse, wie zum Beispiel Stroh, in Treibstoffe und Chemikalien ermöglichen.
Lay summary

Inhalt un Ziel des Forschungsprojekts

Das Ziel unseres Forschungsprojektes ist es, die möglichen Verarbeitungsrouten von lignozellulosehaltiger Biomasse in einer zukünftigen Bioraffenerie zu erweitern, in dem wir neue effiziente biologische Umwandlungsmethoden zu Zwischenprodukten entwickeln, welche dann in einem chemisch-katalytischen Schritt weiter zu diesel- oder kerosinartigen Stoffgemischen verarbeitet werden können. Milchsäure sowie verschiedene Carbonsäuren sollen aus Dampf-vorbehandelter Biomasse in dem sogenannten Multispezies-Biofilm-Membran (MBM)-Reaktor hergestellt werden, welcher die Produktion der zellulose-abbauenden Enzyme, dem Zelluloseabbau zu löslichen Zuckern und deren anaerobe Fermentation zum Zielprodukt in einem Reaktor ermöglicht. In Zusammenarbeit mit den Katalyse- und Nachhaltigkeitsspezialisten der Partnerprojekte wird die vielversprechendste Route zur Herstellung von Diesel oder Kerosin evaluiert.

Wissenschaftlicher un gesellschaftlicher Kontext des Forschungsprojekts


Die Verminderung von CO2-Emissionen mittels des teilweisen Ersatzes von fossilen mit erneuerbaren Treibstoffen ist ein global formuliertes Ziel, welches auch mit politischen Direktiven erreicht werden soll. Diese Massnahmen erfordern erhebliche Anstrengungen und Investitionen, um umgesetzt werden zu können. Forschungsprogramme, welche die Entwicklung von alternativen, emissionsarmen Energieträgern mit dem Potential zur kurz- bis mittelfristigen Kommerzialisierung zum Ziel haben, sind hierfür unumgänglich.

Direct link to Lay Summary Last update: 20.10.2014

Responsible applicant and co-applicants

Employees

Publications

Publication
Selectivity Control during the Single-Step Conversion of Aliphatic Carboxylic Acids to Linear Olefins
Yeap Jher Hau, Héroguel Florent, Shahab Robert L., Rozmysłowicz Bartosz, Studer Michael H., Luterbacher Jeremy S. (2018), Selectivity Control during the Single-Step Conversion of Aliphatic Carboxylic Acids to Linear Olefins, in ACS Catalysis, 8(11), 10769-10773.
Consolidated bioprocessing of lignocellulosic biomass to lactic acid by a synthetic fungal-bacterial consortium
Shahab Robert L., Luterbacher Jeremy S., Brethauer Simone, Studer Michael H. (2018), Consolidated bioprocessing of lignocellulosic biomass to lactic acid by a synthetic fungal-bacterial consortium, in Biotechnology and Bioengineering, 115(5), 1207-1215.
A Multispecies Fungal Biofilm Approach to Enhance the Celluloyltic Efficiency of Membrane Reactors for Consolidated Bioprocessing of Plant Biomass
Xiros Charilaos, Studer Michael H. (2017), A Multispecies Fungal Biofilm Approach to Enhance the Celluloyltic Efficiency of Membrane Reactors for Consolidated Bioprocessing of Plant Biomass, in Frontiers in Microbiology, 8, 1930.
Biochemical Conversion Processes of Lignocellulosic Biomass to Fuels and Chemicals – A Review
Brethauer Simone, Studer Michael (2015), Biochemical Conversion Processes of Lignocellulosic Biomass to Fuels and Chemicals – A Review, in Chimia, 69(10), 572-581.

Collaboration

Group / person Country
Types of collaboration
Prof. Alison Smith, Department of Plant Sciences, University of Cambridge Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
Werner Teufel, IAP Industrieanlagen-Planungsgesellschaft m. b. H. Graz Austria (Europe)
- Industry/business/other use-inspired collaboration

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
SCCER BIOSWEET 2nd Biomass for Swiss Energy Future Conference 2015 Poster Strategies to Improve the Efficiency of Consolidated Bio-chemical Conversion of Lignocellulosic Biomass to Fuels 21.10.2015 Brugg, Switzerland Studer Michael Hans-Peter; Xiros Charilaos;


Communication with the public

Communication Title Media Place Year
Media relations: radio, television Treibstoff aus Maisstroh für die Landwirtschaft SRF1, "Echo der Zeit" German-speaking Switzerland 2015

Patents

Title Date Number Inventor Owner
A method for the microbial production of short chain fatty acids and lipids 04.05.2018 10 2018 206 987.5 DE

Abstract

In order to relieve the world’s dependence on fossil fuels, alternative sustainable sources for energy and chemicals must be exploited. To this end, biorefinery concepts are under development to integrate the production of fuels, power, materials and chemicals from lignocellulosic waste biomass. The aim of this project is to enhance the possible processing routes of such a future biorefinery by developing efficient biochemical conversion processes to intermediate products that can further be processed by chemocatalytic methods to diesel and jet fuel-like mixtures of alkanes and olefins. Specifically, we aim to produce lactic acid as well as less oxygenated C2 to C6 carboxylic acids from pretreated agricultural waste products by a highly efficient consolidated bioprocess employing the multispecies biofilm membrane (MBM) reactor developed in a previous SNSF Ambizione project. Briefly, the MBM process allows to combine the production of cellulolytic enzymes by a specialised aerobic fungal strain such as Trichoderma reesei, the hydrolysis of the cellulose to mono-sugars and the fermentation of the resulting sugars to e.g. ethanol by an anaerobic strain in one reactor. The targeted volatile fatty acids (VFAs) can be produced by a variety of microorganisms from different feedstocks. We will investigate and compare three different VFA production routes employing 1) a lactic acid production strain in combination with the rumen bacterium M. elsdenii that converts lactic acid to mixed VFAs, 2) the obligate anaerobic C. tyrobutyricum producing butyric acid and 3) an anaerobic undefined mixed consortium. Based on the results achieved and in close collaboration with the catalytic group (J. Luterbacher), the most promising combined reaction scheme to build the desired diesel and jet fuel molecules will be selected and further optimized.
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