“Spray-Slag” – Processing of liquid blast furnace slag
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2022)
Blast furnace slags are a by-product of iron production. These slags typically are used in powder form in the building industry, e.g. as an additive for cement production. Therefore, the liquid slags are wet granulated, dried and grinded, which is an energy, water and emission intensive process. To save natural resources, reduce the CO2-emissions and enhance the flowability of the particles, the liquid state of the slag and its heat energy could be utilized by atomizing the melt directly at the blast furnace.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2022)
Blast furnace slags are a by-product of iron production. These slags typically are used in powder form in the building industry, e.g. as an additive for cement production. Therefore, the liquid slags are wet granulated, dried and grinded, which is an energy, water and emission intensive process. To save natural resources, reduce the CO2-emissions and enhance the flowability of the particles, the liquid state of the slag and its heat energy could be utilized by atomizing the melt directly at the blast furnace.
Residual municipal waste composition analysis – New methods for Czech waste management
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
Relevant information about MW composition and proper forecasting of MW composition is crucial for relevant technical and economical modelling and business planning in the field of waste management. These include techno-economical models of MW treatment units, e.g. sorting line, transfer station, energy recovery, waste collection and transport or a regional waste collection and treatment system modelling (Kropáč et al. 2018) and complex business models concerning specific investments in waste management. In this context, there is a project under the Ministry of Environment of the Czech Republic.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
Relevant information about MW composition and proper forecasting of MW composition is crucial for relevant technical and economical modelling and business planning in the field of waste management. These include techno-economical models of MW treatment units, e.g. sorting line, transfer station, energy recovery, waste collection and transport or a regional waste collection and treatment system modelling (Kropáč et al. 2018) and complex business models concerning specific investments in waste management. In this context, there is a project under the Ministry of Environment of the Czech Republic.
Packaging recycling in EU member states – requirements from the circular economy package
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
The EU has established concrete recycling targets for packaging waste for 2025 and 2030. Furthermore, the methodology for calculating the corresponding recycling rates has been amended. The new and stricter calculation methodology will potentially lead to decreases of the current rates. This will be particularly the case for plastic packaging, where denkstatt calculated a gap far above 10 % compared to smaller decreases (> 2 %) to be expected for glass or steel packaging.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
The EU has established concrete recycling targets for packaging waste for 2025 and 2030. Furthermore, the methodology for calculating the corresponding recycling rates has been amended. The new and stricter calculation methodology will potentially lead to decreases of the current rates. This will be particularly the case for plastic packaging, where denkstatt calculated a gap far above 10 % compared to smaller decreases (> 2 %) to be expected for glass or steel packaging.
The potential of insects in waste management – an introduction to possible applications
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
In order to remain competitive for achieving a circular economy we need to consider even more alternative pathways to close the loop for material and waste streams down to a nutritional level. A sustainable and value adding strategy is the intensified rearing and use of insects, in particular the use of edible species as human food and animal feed.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
In order to remain competitive for achieving a circular economy we need to consider even more alternative pathways to close the loop for material and waste streams down to a nutritional level. A sustainable and value adding strategy is the intensified rearing and use of insects, in particular the use of edible species as human food and animal feed.
Development of local municipal solid waste management in the Western Transdanubia region of Hungary
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
Hungarian municipal solid wastes (MSW) management has developed tremendously over the past 15 years. More than 3,000 landfills and dumps had been closed, just to mention one improvement. However, still, lots of work is necessary to accomplish the EU’s ambitious aim of decreasing landfilling and increasing recycling and composting.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
Hungarian municipal solid wastes (MSW) management has developed tremendously over the past 15 years. More than 3,000 landfills and dumps had been closed, just to mention one improvement. However, still, lots of work is necessary to accomplish the EU’s ambitious aim of decreasing landfilling and increasing recycling and composting.
Brave New World – Selected Jurisdictional Pitfalls when Acting on International Waste-to-Energy Projects
© ThomĂ©-Kozmiensky Verlag GmbH (9/2016)
Over the last few years, Waste-to-Energy (WtE) projects became increasingly international. In times of low interest rates, solid infrastructure projects with their fix return rates are more and more attractive to project developers, international investors as well as EPC and O&M contractors. They attract financial and strategic investors which would otherwise not turn towards these rather long-term investments. Therefore, a continuously increasing number of international players from different jurisdictions is entering the global playing field.
© ThomĂ©-Kozmiensky Verlag GmbH (9/2016)
Over the last few years, Waste-to-Energy (WtE) projects became increasingly international. In times of low interest rates, solid infrastructure projects with their fix return rates are more and more attractive to project developers, international investors as well as EPC and O&M contractors. They attract financial and strategic investors which would otherwise not turn towards these rather long-term investments. Therefore, a continuously increasing number of international players from different jurisdictions is entering the global playing field.
Development of Waste-to-Energy Projects
© ThomĂ©-Kozmiensky Verlag GmbH (9/2016)
The first objective of waste management must always be to protect society and the health of individuals from harmful substances contained in the waste. Along the various methods around the globe with which waste has been treated the waste pyramid or waste management hierarchy has become widely accepted as the governing principle for waste management in modern societies. These principles have also been integrated in the European waste framework directive 2008/98/EC. At the bottom of the pyramid lays disposal of waste, meaning it is the least favourable option to treat a primary waste. However this does not mean implementing the waste pyramid prohibits disposal. It merely means that before disposal all other meaningful options are exhausted, and the quantity has been minimized.
© ThomĂ©-Kozmiensky Verlag GmbH (9/2016)
The first objective of waste management must always be to protect society and the health of individuals from harmful substances contained in the waste. Along the various methods around the globe with which waste has been treated the waste pyramid or waste management hierarchy has become widely accepted as the governing principle for waste management in modern societies. These principles have also been integrated in the European waste framework directive 2008/98/EC. At the bottom of the pyramid lays disposal of waste, meaning it is the least favourable option to treat a primary waste. However this does not mean implementing the waste pyramid prohibits disposal. It merely means that before disposal all other meaningful options are exhausted, and the quantity has been minimized.
In-Situ-Remediation of Pb/Zn Contaminated Sites Infl uenced by Mining and Processing
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Worldwide many sites are presently influenced by mining and processing activities. The huge amounts of moved and treated materials have led to considerable flows of wastes and emissions. Alongside the many advantages of processed ores to our society, adverse effects in nature and risks for the environment and human health are observed.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Worldwide many sites are presently influenced by mining and processing activities. The huge amounts of moved and treated materials have led to considerable flows of wastes and emissions. Alongside the many advantages of processed ores to our society, adverse effects in nature and risks for the environment and human health are observed.
Steel Slag Asphalt: Preventing the Waste of a High Quality Resource
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Steel slag is the inevitable by-product of the production of steel, from both the conversion of iron to steel and the recycling of steel scrap. Historically, this material has been sent to a landfill as waste, but over the last 100 years or so, a variety of uses have been found for what has proven to be a high quality, valuable resource.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Steel slag is the inevitable by-product of the production of steel, from both the conversion of iron to steel and the recycling of steel scrap. Historically, this material has been sent to a landfill as waste, but over the last 100 years or so, a variety of uses have been found for what has proven to be a high quality, valuable resource.
Recycling Concepts for Photovoltaic Modules
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
In the fi eld of renewable energies photovoltaic-technologies become more and more important. Therefore an increase of end of life panels can be expected in the next few years depending on the durability of the modules.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
In the fi eld of renewable energies photovoltaic-technologies become more and more important. Therefore an increase of end of life panels can be expected in the next few years depending on the durability of the modules.
