Development of an approximation model for the evaluation of slag treatment strategies
© Lehrstuhl fĂźr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2022)
Sustainable management of resources and circular economy are key focal points of research and development activities within the iron and steel industry. In the project Slagreus, a novel approach enhancing internal and external recycling of basic oxygen furnace (BOF) slag has been developed.

Applicability of multivariate data analysis to improve the sorting degree of recycled polyethylene
© Lehrstuhl fĂźr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
The Circular Plastic Alliance Declaration of the European Commission targets the us-age of 10 million tons of recycled plastic per year into new plastic products in Europe by 2025 (European Commission 9/20/2019). To assist this objective this work focuses on the improvement of mechanical sorting of polyethylene (PE).

The new Waste Framework Directive and its impact on textile waste
© Lehrstuhl fĂźr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
In the course of implementing the circular economy package of the European Union, the Waste Framework Directive was amended recently. Textiles are no longer the poor relation of waste management but have come to the fore.

Plastics Recycling and Energy Recovery Activities in Poland – Current Status and Development Prospects –
© TK Verlag - Fachverlag fĂźr Kreislaufwirtschaft (9/2016)
The waste disposal system in Poland is one of the least advanced in Europe. Despite great efforts over the last 20 years municipal waste landfilling has only reduced from 95 percent in 1991 to 73 percent in 2010. This still means that millions of tonnes of post-consumer waste continue to be landfilled.

Fully Automated Sorting Plant for Municipal Solid Waste in Oslo with Recovery of Metals, Plastics, Paper and Refuse Derived Fuel
© TK Verlag - Fachverlag fĂźr Kreislaufwirtschaft (9/2016)
In order to treat household waste Romerike Avfallsforedling (ROAF) located in Skedsmorkorset north of Oslo, Norway required the installation of a mechanical Treatment facility to process 40,000 tpa. Together with a Norwegian based technical consultancy Mepex and German based technical consultancy EUG the project was tendered and the plant build against a technical specification. In 2013 the project was awarded to Stadler Anlagenbau and since April 2014 the plant is in operation with an hourly throughput of thirty tons. The input waste contains specific green coloured bags containing food waste which is collected together with the residual waste from the households. The process recovers successfully the green food bags before the remaining waste is mechanically pre-treated and screened to isolate a polymer rich fraction which is then fully segregated via NIR technology in to target polymers prior to fully automated product baling. Recoverable Fibre is optically targeted as well as ferrous and non-ferrous metals. All food waste is transported off site for further biological treatment and the remaining residual waste leaves site for thermal recovery. In 2015 the plant has been successfully upgraded to forty tons per hour and remains fully automated including material baling.

Combined Hydraulic and Microbiological In-Situ Remediation on Vienna Central Station
© Lehrstuhl fĂźr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
In the course of the complete teardown of the area of the former southern and eastern railway stations of Vienna and its complete redesign as a new central railway station of Vienna a substantial diesel contamination was detected. In the perspective of a sustainable solution ÖBB decided to eliminate this spill. For this purpose, initially around 4,500 m³ pollutant-containing soil were excavated and disposed. The remaining area was cleaned by an in situ remediation.

Review of the List of Restricted Substances in EEE under RoHS
© Lehrstuhl fĂźr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Given the provisions of the RoHS2-Directive (2011/65/EU) which came into force in 2011 the list of restricted substances in electrical and electronic equipment shall be reviewed periodically, the fi rst time by July 2014. In 2012 the European Commission launched a study with the 2 main objectives: to develop a methodology to identify and assess substances for a potential restriction in EEE and to assess selected substances with a view to their future restriction.

Waste - valuables - secondary resources - contaminants - waste again?
© Eigenbeiträge der Autoren (5/2013)
‘Closing the loop’ numbers among the confessions of environmental policy. And it is true: Without getting out resources from waste, some naturally scarce resources will run out of supply very early. Material recovery mostly saves energy in comparison to the production out of primary materials.

The role of waste management in the control of hazardous substances: lessons learned
© Eigenbeiträge der Autoren (11/2012)
Sorting and disposal of waste are the last steps in the “lifetime” of a product. If products are contaminated with chemicals assessed to be hazardous for man or environment, waste management has the role of a vacuum cleaner in substance chain management working in two different ways: The hazardous compounds have to be properly separated from potential secondary resources in sorting processes. If this is not possible, those products have to be disposed safely. Starting from the experiences collected with some chemicals banned, the tools used for phasing out these chemicals from the technosphere are studied with respect to their influence on the contamination of the environment.

Material Flow-Based Optimization of Process Chains (Move Rec)
© TK Verlag - Fachverlag fĂźr Kreislaufwirtschaft (10/2012)
The variety of waste electrical and electronic equipment (WEEE) makes it difficult to determine the material composition of mixed composite inputs. Most of the types of equipment collected are of a very complex device structure, mechanical parts and electronic compnents, which imply a diverse composite material composition. Besides iron and nonferrous metals, a variety of non-metallic components of some electronic devices contain precoious metals and rare earths. On the other hand, most devices contain hazardous components, which need a specific treatment and/or a controlled waste disposal process.

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