| Since 09/2023 | Research assistant & PhD student RPTU Kaiserslautern-Landau, Chair of Business Administration, esp. Sustainability Management of Prof. Dr. Katharina Spraul |
| 10/2021 - 07/2023 | Study of industrial engineering, area of study mechanical engineering (Master) RPTU Kaiserslautern-Landau Focus on: Human Resource Management, Sustainability Management, Production Engineering, Product Development in Mechanical Engineering |
| 10/2016 - 04/2021 | Study of industrial engineering, area of study mechanical engineering (Bachelor) TU Kaiserslautern |
| 2008 - 2016 | Johanneum grammar school Homburg |
Kiehl, M. & Spraul, K. (2024, July) Circular Economy in Action: Navigating research in an interdisciplinary context. PDW - Research Methods and Strategies for Co-Creating Desirable Futures with Practitioners - Crossroads for Organization: Time, Space, and People - 40th EGOS Colloquium, Milan.
Kiehl, M. & Spraul, K. (2025, May) Co-designing a circular economy framework for energy-intensive production. ECHO - Circular Economy Research Forum, Liège.
Kiehl, M. & Spraul, K. (2025, June) Co-designing a circular economy framework for industrial producing companies. 22nd Management Science Colloquium, Mannheim.
Kiehl, M. & Spraul, K. (2025, September) The ProduCE Framework: A Co-Design Approach to Industrial Production. 2025 Fall Conference of the VHB WK NAMA & WK PROD, Chemnitz.
Spraul, K. & Kiehl, M (2025, June) Circular Economy through the lens of sustainability management: what we know and don't know. 4th International Network Meeting of EUSMAT - 2024/25, Saarbrücken.
Contributions to edited volumes:
Spraul, K., Kiehl, M., Marangé, P., Liarte, S. & Levrat, E. (2025). End-of-life strategy. In Elsevier (pp. 63-82). doi.org/10.1016/b978-0-443-28886-9.00003-4
Professional journals:
Görges, D., von Harbou, E., Kiehl, M., Sahling, F., & Spraul, K. (2025). Smart batch processes in the energy system of the future: Sustainable production: Smart and sustainable. Ecological Economy, 40(1), 40-43.