Dr. Ing. Alexandra Pehlken Principal Scientist

Dr. Ing. Alexandra Pehlken

Position at OFFIS

Principal Scientist

Research and Developement Division

Produktion / Manufacturing Operations Management

Competence Cluster


Position at the University

Groud Leader Cascade Use 2014-2019

Further Activities

EU Evaluator Horizon 2020,
Head of the Steinbeis Transfer Centre Resource
Member of the Board of OLEC e.V.

Research Focus

Supply Chains, Life Cycle Assessment, Material Flow Analysis, Energy Flow Analysis, Raw Materials, Critical Raw Materials, Strategic Raw Materials, Cascade Use, Data Uncertainty, Energy Management, Renewable Energies, Professional Data Center, Grey Energy, Recycling, Secondary Raw Materials, Circular Economy
Alexandra Pehlken studied Mining and Mineral processing at RWTH Aachen University in Aachen, Germany. She performed her doctorate degree at the Mining Faculty in 2002. Her expertise lies in the secondary resource management and the cascade using of materials with its impact on the life cycle performance. While being an expert in recycling, she is also involved in renewable energies. Succeeding her doctorate degree she was granted a scholarship from Germany to work for two years (2004-2005) at Materials Technology Laboratory (MTL) NRCan in Ottawa, Canada. From March 2014 until September 2019 she was head of the research group Cascade Use at Carl von Ossietzky University. Since June 2019 she is a member of the Energy division at OFFIS. Her current research focus lies on assessment of sustainable resource management in relation to the assessment of materials needed for renewable energies and sustainable transportation. She is a lecturer in Bioenergy for the international masters program “Postgraduate Programme Renewable Energy (PPRE)” at Oldenburg University. Since October 2015 she is also the head of the Steinbeis Transfercentre Resource. Since 2018 Alexandra is external evaluator for the EU Horizon 2020 research program. With her research on sustainable car parts decision making she won the Raw Material Efficiency Award 2018 from the German Government BMWi.

+49 441 9722-712



OFFIS - Institut für Informatik
Escherweg 2
26121 Oldenburg

of Dr. Ing. Alexandra Pehlken


AI enabled bio waste contamination-scanner

Stahl, F. , Ferdinand, O., Nolle, L., Pehlken, A. and Zielinski, O.; 41. SGAI International Conference on Artificial Intelligence; 12 / 2021

Einsatz von Künstlicher Intelligenz in der Digitalisierung von Abfallverbrennungskraftwerken

Alexandra Pehlken, Patrick Eschemann, Henriette Garmatter, Fabian Cyris, Astrid Nieße; INFORMATIK 2021 - Computer Science & Sustainability; 09 / 2021

Influence of Material Selection and Product Design on Automotive Vehicle Recyclability

Xiaohui He, Dongmei Su, Wenchao Cai, Alexandra Pehlken, Guofang Zhang, Aimin Wang, Jinsheng Xiao ; Sustainability; 03 / 2021

No more flat tires: Overcoming data defects to achieve supply chain resilience

Alexandra Pehlken, Sabine Baumann; IEEE International Conference on Engineering, Technology and Innovation (ICE/ITMC) 2021; June / 2021

Softwarearchitektur für die Bewertung des Ressourcenbedarfes in Rechenzentren durch ganzheitliche Ressourceneffizienz

Fernando Penaherrera, Alexandra Pehlken, Ralph Hintemann, Simon Hinterholzer, Björn Koch; September / 2021


Impacts of life cycle inventory databases on life cycle assessments: A review by means of a drivetrain case study

Matthias Kalverkamp, Eckard Helmers, Alexandra Pehlken; Journal of Cleaner Production; 10 / 2020

More Sustainable Bioenergy by Making Use of Regional Alternative Biomass?

Alexandra Pehlken, Kalle Wulf, Kevin Greksch, Thomas Klenke, Nina Tsydenova; Sustainability; 09 / 2020

The Material Basis of Energy Transitions

Alena Bleicher, Alexandra Pehlken (Eds); 08 / 2020

Urban Mining: Applying Digital Twins for Sustainable Product Cascade Use

Prof. Dr. Sabine Baumann, Dr. Alexandra Pehlken; 2020

Urban Mining: Applying Digital Twins for Sustainable Product Cascade Use

Prof. Dr. Sabine Baumann, Dr. Alexandra Pehlken; 2020 IEEE International Conference on Engineering, Technology and Innovation (ICE/ITMC); 09 / 2020


Criticality and LCA – Building comparison values to show the impact of criticality on LCA

Koch, B.,Peñaherrera, F., Pehlken, A. ; European Journal of Sustainable Development; 10 / 2019

Gebrauchte Autoteile im Kreislauf

Pehlken, Alexandra; UmweltMagazin; 06 / 2019

Reuse, Recycling and Recovery of End-of-Life new energy vehicles in China

Han, W., Shi, Y., Pehlken, A., Zhang G., Sui, P-C., Xiao, J; Cascade Use in Technologies - Internationale Konferenz zur Kaskadennutzung und Kreislaufwirtschaft – Oldenburg 2018; 2019

Visual similarity to aid alternative-use concept generation for retired wind-turbine blades

E. Kwon, A. Pehlken, K.-D. Thoben, A. Bazylak, L.H. Shu; Journal of Mechanical Design; 03 / 2019


Decision making and software solutions with regard to waste management

Clayton, B.; Kalverkamp, M.; Pehlken, A. ; Journal of Cleaner Production; 12 / 2018


Cascade Use and the Management of Product Lifecycles

Kalverkamp, M.; Pehlken, A.; Wuest, Th.; Sustainability; 08 / 2017

Is there a resource constraint related to lithium ion batteries in cars?

Pehlken, A., Albach S., Vogt, T.; International Journal of Life Cycle Assessment; 01 / 2017

Preface for the Special Issue “Assessing and Managing Life Cycles of Electric Vehicles

Pehlken, A.; Young, S.B. ; Chen, M.; International Journal of Life Cycle Assessment ; 01 / 2017


Challenges in automotive fuel cells recycling

Wittstock, R., Pehlken, A., Wark, M.; Recycling; 01 / 2016

of Dr. Ing. Alexandra Pehlken



Abfallverbrennungskessel 4.0 - Digitalisierung und ganzheitliche Betriebscharakterisierung von Dampferzeugern in Abfallverbrennungskraftwerken

Duration: 2020 - 2023