Summer semester ends with a simulation of EU Decision-Making

Students from Johannes Gutenberg University Mainz (JGU), Technical University of Darmstadt, Ben-Gurion University of the Negev, and various partner universities from the European university alliance FORTHEM, gathered at the end of the summer semester 2024 2024 to simulate the legislative processes of the European Union.

Iron as the key: innovative technology for the long-term storage of green energy

On 15 June 2024, the Hessian Minister of Economic Affairs, Kaweh Mansoori, visited the Clean Circles project at the Technical University of Darmstadt, in which researchers are investigating the use of iron as a CO2-free energy carrier and fuel. This innovative technology enables the safe and efficient storage of large amounts of energy and could revolutionise the use of existing coal-fired power plants.

Article in Handelsblatt focuses on alternatives to hydrogen and reports on our research

Chemical energy carriers are necessary to store renewable energy in the long term. Unlike batteries, for example, substances such as hydrogen, e-fuels and iron can store energy for any length of time. In an article in Handelsblatt, Clara Thier takes a closer look at energy storage in metals and chemicals such as sulphur or lime. It also reports on our research into iron as an energy source and the retrofitting of existing infrastructures.

Niklas Kolorz reports on Clean Circles on YouTube

60,000 CPU cores, 563 terabytes of main memory (RAM) and millions of simulated iron particles. The Lichtenberg II supercomputer at TU Darmstadt's high-performance computing center works diligently on the scientific breakthroughs of tomorrow – always accompanied by the steady whirring of the cooling system.

Poster sessions, discussions, talks and teamwork

The annual Clean Circles retreat took place in Weinheim on 6 March 2024. During the retreat, the researchers presented and discussed the status of the project and iron as an energy carrier.

Clean Circles at the HIGHEST Club on 7 March 2024

On 7 March 2024, we presented our concept of energy storage in iron and its socio-economic perspective at the HIGHEST Club evening.

Postdocs and PhD students invited to visit Clean Circles

Multifaceted perspectives on energy and sustainability: Clean Circles has for the first time invited R1/2 researchers to leverage the potential of a diverse and interconnected research community at the Clean Circles International Forum on Energy and Circular Economy.

Researchers and policymaking professionals from the European Commission discuss technological potential and challenges

Researchers from Rhine-Main Universities and policymaking professionals from the European Commission held two panel discussions on key technologies for the green transition in Brussels. Clean Circles researcher Michèle Knodt presented technologies and solutions for storing energy in iron and releasing it again without emitting CO2.

New publication in Chemical Engineering Science

The evolution of the particle morphology during dissolution follows three different phases.

New publications investigate the fascinating physics of the so-called discrete mode

Two new publications shed light on the influence of the convection on ignition and flame propagation and the difference to gaseous flames.