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University of Graz News Bio-Boom für dicke Brummer

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Tuesday, 20 August 2013

Bio-Boom für dicke Brummer

Damit auch große Lkws umweltfreundlicher werden, erforschen ChemikerInnen der Uni Graz alternative Treibstoffquellen

Damit auch große Lkws umweltfreundlicher werden, erforschen ChemikerInnen der Uni Graz alternative Treibstoffquellen. Foto: Dieter Schütz / pixelio.de

Uni Graz forciert Entwicklung von nachhaltigen Kraftstoffen

Weder Straßen- noch Schiffsverkehr werden in absehbarer Zukunft ohne Verbrennungsmotoren auskommen. „Fahrzeuge mit Elektroantrieb sind für Ballungszentren eine hervorragende Lösung und sollten dort unbedingt forciert werden. Für Lkws auf Überlandstrecken ist diese Energiequelle derzeit allerdings unrealistisch“, weiß Univ.-Prof. Dr. Martin Mittelbach, Chemiker an der Karl-Franzens-Universität Graz. Mit seiner Forschungsgruppe für Nachwachsende Rohstoffe sucht er daher intensiv nach nicht-fossilen Treibstoffen, um den Transport umweltfreundlicher zu machen. Ein neues Labor legt den Grundstein für die industrielle Anwendung.

Die WissenschafterInnen analysieren beispielsweise Nebenprodukte aus der Pflanzenöl-Verarbeitung, Mikroorganismen, Klärschlamm, Holzabfälle oder Tallöl, das bei der Papiererzeugung anfällt. „Wir stehen damit also in keinerlei Konkurrenz zu Lebensmitteln, außerdem achten wir auf die ökonomische, ökologische und soziale Nachhaltigkeit“, betont Mittelbach. Die neuen Kraftstoffe müssen zudem gemäß einer EU-Direktive zur Nutzung von alternativen Energiequellen gegenüber herkommlichen bis zu sechzig Prozent an CO2-Emissionen einsparen. Gerade Holz ist in Österreich in dieser Hinsicht sehr ertragreich. „Es wächst schneller nach, als wir es verbrauchen, außerdem konzentrieren wir uns auf die Verwertung von Rinde oder Sägespänen“, präzisiert der Wissenschafter.
Seine Forschungsgruppe gewinnt aus den genannten Abfallprodukten sowie aus Algen nicht nur Öle oder Fette, sondern versucht auch andere wichtige Inhaltsstoffe zu extrahieren. „Algen enthalten beispielsweise wertvolle Eiweiße und Vitamine, die als Nahrungsergänzungsmittel genutzt werden können“, erklärt der Chemiker.
Mittelbach und seine KollegInnen vom Institut für Chemische Verfahrens- und Umwelttechnik der TU Graz richten gerade ein „Central Lab“ für Bio-basierte Produkte im Rahmen der Kooperation NAWI Graz ein. Diese Forschungskooperation entwickelt dann auch gleich die Technologien, um die wertvollen Inhaltsstoffe in industriellem Maßstab gewinnen und weiterverarbeiten zu können.

Weitere nachhaltige Forschungsprojekte präsentiert die Uni Graz derzeit beim Forum Alpbach.

created by Dagmar Eklaude

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A fresh start, a calling, holidays: what draws people from other career paths to teaching

They used to develop software; now they teach maths in the classroom. Career changers are expected to help address the shortage of qualified teachers in Austria’s schools. In their doctoral theses at the Institute for Educational Research and Teacher Training at the University of Graz, Melanie Gürentz and Claudia Mair examined how these new teachers perceive their new professional roles.

Talent Talks bridge the gap in career guidance

The Styrian Chamber of Commerce (WKO Steiermark), the Styrian Chamber of Labour (AK Steiermark) and the AMS are joining forces when it comes to training young people and, through the “Talent Talks”, are creating a seamless pathway to career guidance. This takes preparation and follow-up support – just in time for the start of the term and the scheme’s tenth anniversary – to a whole new level. A new survey conducted by the Talent Centre among 2,687 former participants to mark the anniversary shows just how important this development is. Of the young people who received follow-up support from the Talent Report, 74.6 per cent stated that they had a good understanding of their own strengths and talents following the Talent Check. Without follow-up support, the figure was 66.5 per cent – a significant difference of 8.1 percentage points.

ERC Starting Grants: three million euros for two researchers at the University of Graz

Two researchers from the University of Graz have secured prestigious and generously funded grants from the EU. Starting Grants from the European Research Council (ERC), each worth 1.5 million euros, have been awarded to the human geographer Heide Bruckner and the social scientist Silvana Weiss.

Austria’s emissions rose in 2025: University of Graz researchers analyse the causes

The Environment Agency Austria has today published the figures for the country’s greenhouse gas emissions in 2025. While emissions fell sharply year on year from 2022 to 2024, they rose again by just under 0.7 per cent in 2025. Researchers at the University of Graz have analysed how much of this increase was due to structural changes in the economy and how much was attributable to external factors over which there is little control. “In 2025, the colder winter compared with 2024 increased emissions by 0.81 per cent, while the weak economy reduced them by 0.38 per cent. If we factor out these influences, we find an underlying increase of 0.26 per cent compared with the previous year,” reports economist Karl Steininger. “This clearly means that Austria is not on track to meet its climate targets, which require a substantial reduction in emissions by 2030.”

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