FG Kreislaufwirtschaft und Recyclingtechnologie

10 Items

Recent Submissions
Waste management and producer responsibility: a score behind - a new ahead

Rotter, Vera Susanne (2011)

In 2001, the Organisation for Economic Co-operation and Development (OECD) defined ‘extended producer responsibility’ (EPR) as ‘(...) an environmental policy approach in which a producer’s responsibility for a product is extended to the post-consumer stage of a product’s life cycle’. The aim was to encourage adoption of EPR principles such that manufacturers would design their products to optim...

Environmental evaluation of waste treatment scenarios for the towns Khanty-Mansiysk and Surgut, Russia

Kaazke, Julia ; Meneses, Montse ; Wilke, Berndt-Michael ; Rotter, Vera Susanne (2013)

Khanty-Mansiysk Autonomous Okrug – Ugra in Siberia has recently started to play a major role in the Russian economy because key oil and gas extraction sites are located in this region. As a result, the extensions of infrastructure and higher incomes have been leading to an accelerated population growth and consequent increase in the generation of solid household waste. The current methods of wa...

Prognosemodell zur Ermittlung von Auswirkungen des demografischen Wandels und der erweiterten Wertstofferfassung auf die Abfallströme und Behandlungskapazitäten

Kornau-Pitzer, Jasmin (2018)

Der demografische Wandel und der Ausbau der Wertstoff- und Biotonne haben einen grundlegenden Einfluss auf die Abfallmenge und Zusammensetzung und somit auch auf die quantitative und qualitative Auslastung der behandelnden Anlagen. Im Rahmen der vorliegenden Dissertation wurde ein Prognosemodell entwickelt mit dem die Auswirkungen der genannten Steuerungsgrößen auf die Abfallströme und behande...

Waste prevention for sustainable resource and waste management

Sakai, Shin-ichi ; Yano, Yasuhiro ; Asari, Misuzu ; Yanagawa, Ritsuki ; Matsuda, Takeshi ; Yoshida, Hideto ; Yamada, Tetsuji ; Kajiwara, Natsuko ; Suzuki, Go ; Kunisue, Tatsuya ; Takahashi, Shin ; Tomoda, Keijiro ; Wuttke, Joachim ; Mählitz, Paul ; Rotter, Vera Susanne ; Grosso, Mario ; Astrup, Thomas Fruergaard ; Cleary, Julian ; Oh, Gil-Jong ; Liu, Lili ; Li, Jinhui ; Ma, Hwong-wen ; Chi, Ngo Kim ; Moore, Stephen (2017-02-21)

Although the 2Rs (reduce and reuse) are considered high-priority approaches, there has not been enough quantitative research on effective 2R management. The purpose of this paper is to provide information obtained through the International Workshop in Kyoto, Japan, on 11–13 November 2015, which included invited experts and researchers in several countries who were in charge of 3R policies, and ...

Recycling Improves Soil Fertility Management in Smallholdings in Tanzania

Krause, Ariane ; Rotter, Vera Susanne (2018-02-26)

Residues from bioenergy and ecological sanitation (EcoSan) can be utilized to sustain soil fertility and productivity. With regard to certain cooking and sanitation technologies used in smallholder households (hh), we systematically analyzed how utilization of the respective potentials to recover residues for farming affects (i) soil nutrient balances, (ii) the potential for subsistence product...

Potentials and Barriers for Tantalum Recovery from Waste Electric and Electronic Equipment

Ueberschaar, Maximilian ; Jalalpoor, Daniel Dariusch ; Korf, Nathalie ; Rotter, Vera Susanne (2017)

Circular economy approaches aim to close material cycles along the value chain. As such, the circular economy can be a long-term strategy to mitigate the risks of critical raw material (CRM) supply. Tantalum, with a current end-of-life recycling rate of less than 1%, has been intermittently discussed as critical. Even though the specificity of tantalum applications and high-mass fractions of ta...

Enabling the recycling of rare earth elements through product design and trend analyses of hard disk drives

Ueberschaar, Maximilian ; Rotter, Vera Susanne (2015)

Hard disk drives consist of a complex mix of various materials. While Aluminum, Copper and Steel are easy to separate, actual recycling processes dilute containing rare earth elements to non-recoverable grades in other material streams. To enable future recycling of these materials an in-depth analysis of hard disk drives from Desktop PCs and Notebooks was carried out. Furthermore, possible rec...

Challenges for critical raw material recovery from WEEE

Ueberschaar, Maximilian ; Otto, Sarah Julie ; Rotter, Vera Susanne (2017)

Gallium and gallium compounds are more frequently used in future oriented technologies such as photovoltaics, light diodes and semiconductor technology. In the long term the supply risk is estimated to be critical. Germany is one of the major primary gallium producer, recycler of gallium from new scrap and GaAs wafer producer. Therefore, new concepts for a resource saving handling of gallium an...

Assessment of element-specific recycling efficiency in WEEE pre-processing

Ueberschaar, Maximilian ; Geiping, Julia ; Zamzow, Malte ; Flamme, Sabine ; Rotter, Vera Susanne (2017)

Pre-processing is a crucial step to ensure the efficiency of subsequent processes and the quality of recyclates. The efficiency of pre-processing can be affected by high losses to undesignated output fractions. Standard batch tests usually provide mass balances and are a good proxy for bulk materials balances (iron/steel, aluminum, plastics). This article aims at harmonizing methodologies and ...

Potential and recycling strategies for LCD panels from WEEE

Ueberschaar, Maximilian ; Schlummer, Martin ; Jalalpoor, Daniel ; Kaup, Nora ; Rotter, Vera Susanne (2017)

Indium is one of the strategically important materials, which have been characterized as critical by various industrialized countries. Despite its high relevance, only low recycling rates are realized. Its main application is in indium tin oxide (ITO), which is used in the production of liquid crystal displays (LCD). However, recovery strategies for indium from LCDs are not yet being implemente...