Comparison of leaching tests to determine and quantify the release of inorganic contaminants in demolition waste |
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| Authors: | Delay Markus Lager Tanja Schulz Horst D Frimmel Fritz H |
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| Institution: | 1. Graduate of Transportation Engineering, Faculty of Civil Engineering, Istanbul Technical University, Istanbul 34469, TURKEY;2. Road Construction Technical Engineer, Ayhanlar Holding;3. Professor of Civil Engineering, Faculty of Civil Engineering, Istanbul Technical University, Istanbul 34469, TURKEY;1. Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300071, China;2. Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Nankai University, Tianjin, 300071, China;3. College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China;4. Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture & Research Center of Sustainable Energy and Nanotechnology, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan;1. Politecnico Di Milano, School of Management, Milan, Italy;2. University of Salento, Department of Innovation Engineering, Lecce, Italy;3. Delft University of Technology, Department of Architectural Engineering & Technology, Delft, Netherlands, Faculty of Architecture and the Built Environment, Building 8, (TU Delft);4. LIUC Università Cattaneo, School of Industrial Engineering, Castellanza, Italy;5. University of Nicosia, School of Business, Cyprus, Greece |
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| Abstract: | The changes in waste management policy caused by the massive generation of waste materials (e.g. construction and demolition waste material, municipal waste incineration products) has led to an increase in the reuse and recycling of waste materials. For environmental risk assessment, test procedures are necessary to examine waste materials before they can be reused. In this article, results of column and lysimeter leaching tests having been applied to inorganic compounds in a reference demolition waste material are presented. The results show a good agreement between the leaching behaviour determined with the lysimeter unit and the column units used in the laboratory. In view of less time and system requirements compared to lysimeter systems, laboratory column units can be considered as a practicable instrument to assess the time-dependent release of inorganic compounds under conditions similar to those encountered in a natural environment. The high concentrations of elements in the seepage water at the initial stage of elution are reflected by the laboratory column leaching tests. In particular, authorities or laboratories might benefit and have an easy-to-use, but nevertheless reliable, method to serve as a basis for decision-making. |
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