Combined Hydraulic and Microbiological In-Situ Remediation on Vienna Central Station
© Lehrstuhl fĂĽr 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 Ă–BB decided to eliminate this spill. For this purpose, initially around 4,500 mÂł pollutant-containing soil were excavated and disposed. The remaining area was cleaned by an in situ remediation.

LNAPL/DNAPL Phase Skimming on the Contaminated Site „Kokerei Linz”
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
The coke oven plant started production in 1942 and was rebuilt after the extensive damage towards the end of World War II. For the production of by-products tar and crude benzene (light oil, coal) were distilled on site. Due to the effects of war and associated with the destruction of various parts of the coking plant, there were massive contaminations of the soil at the operational facilities. Based on these contaminations in soil there is still a signifi cant input of pollutants into the groundwater.

Extracellular Electron Shuttles for the Anaerobic Oxidation of Tar Oil Contaminants
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Coal tar, as a by-product from coal gasifi cation in municipal or manufactured gas plants (MGP), has been used for numerous industrial purposes including wood impregnation and as a raw material for ointments. Initially valued for its antibiotic properties, the constituents of coal tar constituents, when released into the environment, now pose considerable threats to soil and groundwater quality in many industrialized countries.

Feeding of Refuse Derived Fuels in the Cement Industry
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
In the energy-intensive industries of cement production, the use of refuse derived fuels (EBS) is in common since several years especially to decrease costs.

Material Flow Analysis of Specific Nanomaterials in C&D Waste in Japan
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
The objective of this study is to clarify the material flow of specific nanomaterials with focus on construction materials to deviate its release scenarios for the end-of-life phase. The waste stream of construction and demolition (C&D) waste is very challenging because it is generated by both households and industry. Furthermore, the volume of C&D waste in Japan or in Austria is very high. Regarding nanotoxicity, the content of engineered nanomaterials (ENMs) in paints for construction materials is considerable. Chen et al. (2008) pointed out that SiO2 nanoparticles can easily be airborne because of their size. Kaegi et al. (2008 & 2010) have also shown that the nano-fraction of the whitening pigment (TiO2) and nano-Ag was released into surface water under real weather conditions from facade coatings.

bifa-Text No. 62: Ecoefficiency analysis of photovoltaic modules / english version
© bifa Umweltinstitut GmbH (2/2014)
The study by the bifa environmental institute describes a future-orientated view of the ecological and economic effects of photovoltaic (PV) systems along their whole life cycle.

Sorption Behavior of Uranium in Soils
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2012)
As a limiting factor for plant growth, phosphorous (P) is removed permanently from soils and P-fertilization is indispensible for arable soils. Depending on origin and processing method of the raw materials, mineral P-fertilizers can contain Uranium (U) up to 173 mg·kg-1 (Dittrich & Klose 2008). Considering an extensive P-fertilization in conventional agriculture, their applica-tion could lead to an annual input of U into agricultural environments. Regarding the high hu-man- and phyto-toxic potential of U, it is necessary to characterize the fate of U in the pe-dosphere and to identify and quantify further processes like enrichment in soils, plant uptake or leaching into groundwater aquifers. In surface and soil waters the Uranyl-ion (UO22+) is the pre-dominant species of U. Since the high tendency to hydrolysis and complexation with different ligands, the chemistry of U in soils is very complex. Moreover, the physico-chemical properties of soils may vary in a broad range and could cause very different liquid/solid distributions of U, which mainly determines the mobility and plant availability of U.

Examples of Inventive Approaches in Hazardous Waste Treatment in Bulgaria
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2012)
Based on their nature of generation, hazardous wastes can be divided in two major groups: waste with historical background and waste currently generated from economic activity. Those two groups of waste require very different approaches considering their proper treatment both from environmental and economic point of view. Why? Historically generated hazardous wastes are obsolete products or resulted from entering into force and later amendments of specific legislation (such as POPs – DDT, PCBs, etc.) or more stringent requirements towards industrial ac-tivities. The second group of wastes – currently generated by economic activities have two main sources - industry and households. Both subgroups differ, depending on quantity, conditions, availability of funds to cover the treatment costs, and public perception.

Treatment and Disposal of NORM-Contaminated Oil Field Waste
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2012)
NORM/TE-NORM wastes such as in particular radioactive scales and slur-ries/sludge are generated in the oil field and petrochemical industry in considerable amounts. Currently adequate treatment and disposal technologies are not commonly applied. This paper basically draws attention to the problem and reviews basic principles, applicability, advantages and limitations of NORM waste treatment and disposal.

Anaerobic Digestion of Industrial Organic Waste with the Horizontal Plug-Flow Digester – Two-Year Operation Experience of a Dry Fermentation Plant –
© TK Verlag - Fachverlag fĂĽr Kreislaufwirtschaft (10/2012)
Both the treatment of solid waste and the energy transition from fossil fuels to renewable energy are the urgent and crucial issues that are confronted worldwide. Using anaerobic digestion processes to convert biodegradable solid waste into fertiliser and energy can be the appropriate solution that is beneficial to both issues. This article gives a deep analysis about a dry fermentation plant with a horizontal plug-flow digester, which treats diverse sorts of industrial organic waste. Two-year successful operating experience demonstrates that the dry fermentation technology is suitable to treat and utilise the industrial organic waste, even if the sorts and amounts of feedstock vary constantly. Our experience also shows that the anaerobic digestion of industrial and commercial organic waste is the new trend worldwide and its markets are developing rapidly. Meanwhile, it is lack of all-embracing legislations and economic techniques regarding the treatment and utilisation of digestate, which hinders the development of biogas industry.

 1  2  3 . . . . >


 Keep me signed in

Forgot your password?