I am an expert in sustainable resource management and work in applied science. My background is a doctorate in mineral processing / mining engineering at RWTH Aachen University. Today I have 20 years of extensive knowledge in recycling technologies and since 5 years gaining knowledge renewable energy, focussing on sustainable materials and critical materials. Address: Oldenburg, Niedersachsen, Germany
2022 IEEE 28th International Conference on Engineering, Technology and Innovation (ICE/ITMC) & 31st International Association For Management of Technology (IAMOT) Joint Conference, Jun 19, 2022
2022 IEEE 28th International Conference on Engineering, Technology and Innovation (ICE/ITMC) & 31st International Association For Management of Technology (IAMOT) Joint Conference, Jun 19, 2022
Abstract With the increasing amount of renewable energy in the energy mix, the growing demand for... more Abstract With the increasing amount of renewable energy in the energy mix, the growing demand for materials required to manufacture renewable technologies becomes a potential limiting factor for their further implementation. When assessing the consequences of using these materials, it is necessary to consider their physical availability and their environmental impacts. Currently, methodologies such as material flow analysis and life cycle assessment make it possible to analyze a product’s complete material requirements throughout its life cycle and the related environmental impacts. However, these methods currently focus on aspects such as material depletion, or global warming potential, without consideration of criticality, potential for replacement, or material efficiency. The indicators fail to take into consideration the temporal variations of material stocks. This chapter provides an overview on the existing methods and their indicators for assessing raw materials consumption and highlights their limitations when it comes to evaluating the total impacts of new energy technologies.
China has the largest quantity of new energy vehicles (NEVs) in the world. As time progresses, a ... more China has the largest quantity of new energy vehicles (NEVs) in the world. As time progresses, a certain percentage of NEVs will enter the scrap stage every year. By examining the status quo and the problems of recycling of conventional end-of-life vehicles in China, this study investigated the potential market for end-of-life NEVs and existing problems in the recycling and reuse systems. It was found that the recycling and reuse systems’ needs should be considered ahead of time. Further, various modes and methods for the recycling and reuse of end-of-life NEVs and their parts were analysed. Several strategies for the recycling and reuse of NEVs are proposed, including the establishment of an independent industry model for the utilization of scrap NEV power batteries. This study provides a reference for establishing a sound recycling system for end-of-life NEVs and setting up a recycling and reuse platform for scrapped NEVs in China.
<p>Ein digitales Entscheidungstool soll Demontagebetrieben helfen zu erkennen, ob ein gebra... more <p>Ein digitales Entscheidungstool soll Demontagebetrieben helfen zu erkennen, ob ein gebrauchtes Autoteil noch einmal verwendet werden sollte. Dieser Prototyp hat sich versuchsweise bewährt und soll jetzt weiterentwickelt werden.</p>
Owners of a car usually have to maintain their car including their car parts regularly, which res... more Owners of a car usually have to maintain their car including their car parts regularly, which results in exchanging car parts from time to time. Normally, products made by original equipment manufacturers are used by professional garages because of the guarantee they have to provide. The newly developed decision tool RAUPE is based on data mining methods applied to a data base provided by a car dismantling network that includes around one million spare parts’ data. The results of this data mining is included in RAUPE giving information on the reusability chances of the spare parts and the life cycle performance related to its CO2 emissions. The decision tool is in its beta version and is to be evaluated by the end of 2018. The paper describes the concept of RAUPE and the role of its stakeholders.
Der steigende Energiebedarf der Rechenzentren stellt eine Herausforderung bei der Erreichung der ... more Der steigende Energiebedarf der Rechenzentren stellt eine Herausforderung bei der Erreichung der Klimaschutzziele sowie der Realisierung der Energiewende dar. Auch die sogenannte graue Energie – also die Energie, die für Herstellung, Transport, Lagerung und Entsorgung der Komponenten benötigt wird – kann ganz erhebliche Anteile am Gesamtenergiebedarf ausmachen. Dieser Artikel stellt eine selbstentwickelte Modellstruktur vor, welche die graue Energie in Rechenzentren erstmalig berechnet.
Owners of a car usually have to maintain their car including their car parts regularly, which res... more Owners of a car usually have to maintain their car including their car parts regularly, which results in exchanging car parts from time to time. Normally, products made by original equipment manufacturers are used by professional garages because of the guarantee they have to provide. The newly developed decision tool RAUPE is based on data mining methods applied to a data base provided by a car dismantling network that includes around one million spare parts’ data. The results of this data mining is included in RAUPE giving information on the reusability chances of the spare parts and the life cycle performance related to its CO2 emissions. The decision tool is in its beta version and is to be evaluated by the end of 2018. The paper describes the concept of RAUPE and the role of its stakeholders.
2022 IEEE 28th International Conference on Engineering, Technology and Innovation (ICE/ITMC) & 31st International Association For Management of Technology (IAMOT) Joint Conference, Jun 19, 2022
2022 IEEE 28th International Conference on Engineering, Technology and Innovation (ICE/ITMC) & 31st International Association For Management of Technology (IAMOT) Joint Conference, Jun 19, 2022
Abstract With the increasing amount of renewable energy in the energy mix, the growing demand for... more Abstract With the increasing amount of renewable energy in the energy mix, the growing demand for materials required to manufacture renewable technologies becomes a potential limiting factor for their further implementation. When assessing the consequences of using these materials, it is necessary to consider their physical availability and their environmental impacts. Currently, methodologies such as material flow analysis and life cycle assessment make it possible to analyze a product’s complete material requirements throughout its life cycle and the related environmental impacts. However, these methods currently focus on aspects such as material depletion, or global warming potential, without consideration of criticality, potential for replacement, or material efficiency. The indicators fail to take into consideration the temporal variations of material stocks. This chapter provides an overview on the existing methods and their indicators for assessing raw materials consumption and highlights their limitations when it comes to evaluating the total impacts of new energy technologies.
China has the largest quantity of new energy vehicles (NEVs) in the world. As time progresses, a ... more China has the largest quantity of new energy vehicles (NEVs) in the world. As time progresses, a certain percentage of NEVs will enter the scrap stage every year. By examining the status quo and the problems of recycling of conventional end-of-life vehicles in China, this study investigated the potential market for end-of-life NEVs and existing problems in the recycling and reuse systems. It was found that the recycling and reuse systems’ needs should be considered ahead of time. Further, various modes and methods for the recycling and reuse of end-of-life NEVs and their parts were analysed. Several strategies for the recycling and reuse of NEVs are proposed, including the establishment of an independent industry model for the utilization of scrap NEV power batteries. This study provides a reference for establishing a sound recycling system for end-of-life NEVs and setting up a recycling and reuse platform for scrapped NEVs in China.
<p>Ein digitales Entscheidungstool soll Demontagebetrieben helfen zu erkennen, ob ein gebra... more <p>Ein digitales Entscheidungstool soll Demontagebetrieben helfen zu erkennen, ob ein gebrauchtes Autoteil noch einmal verwendet werden sollte. Dieser Prototyp hat sich versuchsweise bewährt und soll jetzt weiterentwickelt werden.</p>
Owners of a car usually have to maintain their car including their car parts regularly, which res... more Owners of a car usually have to maintain their car including their car parts regularly, which results in exchanging car parts from time to time. Normally, products made by original equipment manufacturers are used by professional garages because of the guarantee they have to provide. The newly developed decision tool RAUPE is based on data mining methods applied to a data base provided by a car dismantling network that includes around one million spare parts’ data. The results of this data mining is included in RAUPE giving information on the reusability chances of the spare parts and the life cycle performance related to its CO2 emissions. The decision tool is in its beta version and is to be evaluated by the end of 2018. The paper describes the concept of RAUPE and the role of its stakeholders.
Der steigende Energiebedarf der Rechenzentren stellt eine Herausforderung bei der Erreichung der ... more Der steigende Energiebedarf der Rechenzentren stellt eine Herausforderung bei der Erreichung der Klimaschutzziele sowie der Realisierung der Energiewende dar. Auch die sogenannte graue Energie – also die Energie, die für Herstellung, Transport, Lagerung und Entsorgung der Komponenten benötigt wird – kann ganz erhebliche Anteile am Gesamtenergiebedarf ausmachen. Dieser Artikel stellt eine selbstentwickelte Modellstruktur vor, welche die graue Energie in Rechenzentren erstmalig berechnet.
Owners of a car usually have to maintain their car including their car parts regularly, which res... more Owners of a car usually have to maintain their car including their car parts regularly, which results in exchanging car parts from time to time. Normally, products made by original equipment manufacturers are used by professional garages because of the guarantee they have to provide. The newly developed decision tool RAUPE is based on data mining methods applied to a data base provided by a car dismantling network that includes around one million spare parts’ data. The results of this data mining is included in RAUPE giving information on the reusability chances of the spare parts and the life cycle performance related to its CO2 emissions. The decision tool is in its beta version and is to be evaluated by the end of 2018. The paper describes the concept of RAUPE and the role of its stakeholders.
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Papers by Alexandra Pehlken