Alexandra Pehlken is an expert in raw material engineering and recycling. She studied Mining and Mineral Processing at RWTH Aachen University in Aachen, Germany. She completed her Doctorate degree in the Mining Engineering Faculty in 2002. Her expertise lies in sustainable resource management, the cascade use of materials and its impact on life cycle performance. Between 2014 and 2019 she was head of the research group Cascade Use at Carl von Ossietzky University. Currently she is a member of the Energy division at OFFIS and a board member of the Energiecluster Oldenburg.