Philipp Aschenbrenner's research while affiliated with TU Wien and other places

Publications (27)

Article
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Concerns about the increasing global consumption of non-renewable resources as well as shortages of primary raw materials and reduction of space available for final disposal of waste are raising important issues for the society. Additionally, the unsustainable treatment of resources belongs to the main concerns of the EU, resulting in the developme...
Article
Full-text available
Bottom ash from waste incineration is heterogeneous and contains different materials. Previous studies on the material composition of bottom ash provide only limited information as to composition, because large pieces present in bottom ash were not investigated nor were all materials separated and analysed. The objective of the present study is to...
Article
Full-text available
The chemical composition and leachability of municipal solid waste incineration bottom ash are important parameters determining its suitability for utilisation. The objective of the present study is to investigate the chemical composition of individual size and material fractions and their contribution to the total elemental contents of bottom ash....
Article
Today different types of wastes are used as refuse-derived fuels (RDF) either in waste-to-energy plants or as fuel substitutes in energy-intensive industrial processes. In order to quantify their greenhouse-gas relevance (fossil carbon content), reliable and practical analytical methods are required, which allow differentiation between biogenic and...
Article
Full-text available
Der Einsatz von alternativen Brennstoffen – wie aus Abfall hergestellte Ersatzbrennstoffe (EBS) – kann in industriellen thermischen Verwertungsanlagen (beispielsweise in Zementwerken) neben der Einsparung von Primärrohstoffen auch zu einer Reduzierung der klimarelevanten CO2-Emissionen führen. Um diese CO2-Einsparungen nachzuweisen, bedarf es einer...
Article
The furnace campaign of a blast furnace represents an important factor for the iron-making industry due to the fact that maintenance such as relining is not only costly but also time consuming. The furnace campaign is largely determined by the functionality of the lining, which is influenced by wear mechanisms and the damaging behavior of certain e...
Article
Full-text available
A reliable and practical method for characterizing refuse-derived fuels (RDF) with respect to greenhouse gas-relevance (or biomass content) is required by industries and waste management companies. As RDF usually consist of a variety of materials with different physical properties, sampling and sample preparation may represent crucial steps with re...
Article
Blast furnace sludge is a heterogeneous material generated by the wet top gas cleaning process. It consists mainly of Fe, O, and C and contains major amounts of Si, Al, and Mg. Besides these elements, the sludge also contains trace metals such as Cd, Zn, and Pb. Reliable information about the total contents and distribution of the elements present...
Article
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Eine Grundvoraussetzung für effizientes Recycling von Abfällen aus Gebäudeabbrüchen und der Bestimmung von materialspezifischen Recyclingraten ist das Wissen über die Materialzusammensetzung der Gebäude als Quelle zukünftig anfallender Abfälle. In diesem Artikel wird eine Methode zur Charakterisierung der Materialzusammensetzung von Gebäuden vor de...
Article
The biomass content of material from pulp and paper production (a mixture of waste and paper and thin layer packaging plastics) is determined by the adapted balance method. This novel approach is a combination of combustion elemental analysis (CHNSO) and a data reconciliation algorithm based on successive linearisation for evaluation of the analysi...
Article
The biogenic fraction of a simple solid recovered fuel (SRF) mixture (80 wt% printer paper/20 wt% high density polyethylene) is analyzed with the in-house developed adapted balance method (aBM). This fairly new approach is a combination of combustion elemental analysis (CHNS) and a data reconciliation algorithm based on successive linearisation for...
Article
A prerequisite of the efficient recycling of demolition waste and its evaluation in terms of the material specific recycling rates is information on the composition of the building material stock (as the source of future demolition waste). A practical method is presented that characterizes the material composition of buildings prior to their demoli...
Article
Mixing and pelletizing sewage sludge ash (SSA) or municipal solid waste (MSW) fly ash with CaCl2 and treating these pellets in a rotary reactor at approximately 1000 °C lead to a significant decrease of the heavy metal concentration.Experiments were carried out in an indirectly-heated laboratory-scale rotary reactor. From SSA, after 10 min at 1050...
Article
Heavy metal removal from sewage sludge ash can be performed by mixing the ash with environmentally compatible chlorides (e.g. CaCl2 or MgCl2) and water, pelletizing the mixture and treating the pellets in a rotary reactor at about 1000 degrees C. Thermogravimetry-mass spectroscopy, muffle oven tests (500-1150 degrees C) and investigations in a labo...
Article
Components with extraordinarily high analyte contents, for example copper metal from wires or plastics stabilized with heavy metal compounds, are presumed to be a crucial source of errors in refuse-derived fuel (RDF) analysis. In order to study the error generation of those 'analyte carrier components', synthetic samples spiked with defined amounts...
Article
Heavy metal separation from municipal solid waste (MSW) fly ash is becoming important as a source for metal recovery and as a means to reduce landfill costs.In an indirectly heated laboratory-scale rotary reactor, mixtures of MSW fly ash with different amounts and different types of chlorides are treated batch-wise at 1000 °C for 60 min; in a muffl...
Article
A method to determine the mass, energy and carbon content of biogenic and fossil matter in refuse-derived fuel (RDF) is described. The method combines standard chemical information about biogenic and fossil material with data from a chemical analysis of the RDF. The data are used to solve a set of equations that deliver the mathematically and stati...
Article
Phosphate recycling from sewage sludge can be achieved by heavy metal removal from sewage sludge ash (SSA) producing a fertilizer product: mixing SSA with chloride and treating this mixture (eventually after granulation) in a rotary kiln at 1000 ± 100°C leads to the formation of volatile heavy metal compounds that evaporate and to P-phases with hig...
Article
Municipal solid waste (MSW) fly ash is classified as a hazardous material because it contains high amounts of heavy metals. For decontamination, MSW fly ash is first mixed with alkali or alkaline earth metal chlorides (e.g. calcium chloride) and water, and then the mixture is pelletized and treated in a rotary reactor at about 1000 degrees C. Volat...
Article
Full-text available
Municipal solid waste (MSW) fly ash is classified as a hazardous material because it contains high amounts of heavy metals and dioxins and furans (PCDD / PCDF). MSW FLY ASH is mixed with calcium chloride and water. This mixture is pelletized and treated in a rotary kiln at about 1000°C to evaporate the heavy metals in form as their chlorides. In th...

Citations

... Many researchers have attempted to integrate data from emerging digital technologies into BIM with the above in mind. These include: coupling BIM and the Internet of Things (IoT) to enhance health and safety in projects [14,15]; integrating blockchain into BIM to automate sharing risk/reward for Integrated Project Delivery (IPD) projects [16]; and using immersive technologies with BIM to efficiently involve endusers in design and development stages [17][18][19]. ...
... However, when untreated, municipal solid waste incineration bottom ash (MSWBA) has substances such as heavy metals and salts which can pose an environmental risk (del Valle-Zermeño et al. 2013). Various researchers reported different methods of treatment of bottom ash Huber et al. 2020) before using in any applications. When used as an alternative for conventional aggregate, aggregate made with MSW bottom ash is sieved for suitable grading (for fine and coarse aggregates) and is subjected to further treatments such as ferrous and non-ferrous separation , washing (Kuo et al. 2015;Zhang and Zhao 2014;Saikia et al. 2015) and thermal treatment (Saikia et al. 2015). ...
... One popular MSW treatment is incineration, since it can reduce the volume of waste by 70-90%. However, 20-25% of incinerated MSW becomes incineration bottom ash (IBA), which then requires appropriate disposal (Huber et al., 2019;Yin et al., 2018b). The most common disposal method for IBA in many developed or densely populated areas is as landfill (National Bureau of Statistics of China, 2017;Tsai et al., 2020;Wei et al., 2011). ...
... Over the past several decades, the cement industry has made a number of investments in the infrastructure enabling the incineration of alternative fuels. As part of the modernization of the production lines, a substitution rate of primary energy has reached the level of up to 50-80% [18,19]. In some European countries the share (%) of heat from the waste-based fuel in 2019 was over 60% -e.g. ...
... RDF production is subjected to a multi-step process of separation technologies such as sieving, sifting, grinding, and can be followed by briquetting or in the generation of RDF-fluff (Sprenger et al., 2018;Rajca et al., 2020). The type of fuel generated is generally cheaper, readily available, and comparatively produces less CO 2 than conventional fuels such as coal (Schwarzböck et al., 2016). RDF can be used in energy-intensive industries like chemical, cement, paper manufacturing as a co-combustion in existing modified plants or as a mono-combustion in specially built processing plants (Rotter et al., 2011). ...
... Blast furnace slag usually contains Zn, C, CaO, S, Pb, Cd, Cr, As, and alkali metals (K, Na, etc.) [7]. These elements are associated with iron ores of various kinds, which represent the basic use of furnaces. ...
... Because of the complex composition of SZO, it is difficult to recover, and unreasonable treatment methods will cause a waste of resources and even environmental pollution [4]. In industry, the hydrometallurgical method is generally used to recover zinc from SZO. ...
... Hence, the authors have developed a laboratory-based analysis method – the so-called adapted Balance Method (aBM) – which shows promising results [18,19]. Analyses of defined mixtures of biogenic (like cardboard and wood) and fossil materials (like polyethylene and polystyrene) revealed deviations from the theoretical value of below 1% when the materials were mixed after milling [20]. When materials were mixed prior to the sample preparation, results of the aBM differ by b5% (relative) from the known composition of a two-component mixture consisting of paper and polyethylene [19]. ...
... which provides estimates of costs and quantities based on the total square footage of the building as shown inTable 1and 2. Further guidance in determining the building material composition was gained fromKleemann et al. (2016). ...
... Durchschnittliche Lebensdauern für unterschiedliche Gebäudekategorien erscheinen für eine umfassende Beschreibung der Dynamiken im Gebäudebestand zu kurz gegriffen (Kohler und Yang 2007). Wie in Kleemann et al. (2015) beschrieben, ist die Qualität von statistischen Daten über Zusammensetzung von Abbruchabfällen oft mangelhaft. Hinsichtlich der Abbruchaktivität gibt es selbst in gut verwalteten Städten wie Wien oft nur rudimentäre Aufzeichnungen. ...