Solidification with water as a treatment method for air pollution control residues |
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| Authors: | Todorovic Jelena Ecke Holger Lagerkvist Anders |
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| Affiliation: | 1. Physical Chemistry I, University of Bayreuth, Universitätsstr.30, 95447, Bayreuth, Germany;2. HASYLAB/DESY, Notkesstr. 85, 22607, Hamburg, Germany;1. Materials Characterization Research Group, Universidade do Vale do Rio Sinos (UNISINOS), Av. Unisinos, 950, São Leopoldo 93.022-000, RS, Brazil;2. Department of Metallurgical Engineering, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Setor 6, Centro de Tecnologia, Porto Alegre, RS, Brazil;3. Department of Civil Engineering, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Osvaldo Aranha, 99, 90035-190 Porto Alegre, RS, Brazil;1. Department of Internal Medicine, University of Connecticut, Farmington, CT 06030, United States;2. Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT 06511, United States;3. Yale Center for Genomic Analysis (YCGA), Orange, CT 06477, United States;4. Department of Computer Science, Yale University, New Haven, CT 06511, United States;1. General Medicine and Emergency Center (Internal Medicine), Toho University Omori Medical Center, 6-11-1 Omori-nishi, Ota-ku, 1438541, Tokyo, Japan;2. Department of Microbiology and Infectious Diseases, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, 1438540, Tokyo, Japan;3. Fujirebio Inc., 51 Komiya-machi, Hachioji, 192-0031, Tokyo, Japan;1. Department of Civil and Mechanical Engineering and INSTM Research Unit, Università degli Studi di Cassino e del Lazio Meridionale, Via G. Di Biasio 43, 03043, Cassino, FR, Italy;2. Department of Applied Science and Technology and INSTM Unit of Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy;3. INRIM, Nanoscience and Materials Division, Strada delle Cacce 91, 10135, Torino, Italy;4. Department of Drug Science and Technology, Università degli Studi di Torino, Via Pietro Giuria 9, Torino, Italy;5. Dipartimento di Scienze della Terra, Università degli Studi di Torino, Via Valperga Caluso, 35, 10125, Torino, Italy |
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| Abstract: | The process of solidification with water was studied on air pollution control (APC) residues from incineration of refuse-derived fuel (RDF) regarding mechanical strength and leaching behaviour of solidified material. Factorial design in two levels was applied to investigate the impact of water addition, time, and temperature to mechanical strength of solidified material. Factors time and temperature, as well as the interaction between the addition of water and time significantly (alpha=0.05) influenced the mechanical strength of solidified material. The diffusion-leaching test NEN 7345 was performed to investigate if the leaching behaviour of elements from solidified material was determined by diffusion. Since it was found that leaching is not diffusion controlled, the long-term leaching behaviour was not assessed. However, the investigation showed that some of the studied components (Al, Hg, Mn, Pb, Si, and Zn) could be considerably demobilised by solidification with water. Concentrations of As, Cd, Co, Cu, Fe, and Ni were either below or not quite above the detection limits to be included in the analysis of leaching behaviour. The elements least demobilised by solidification were Cl, Cr, K, and Na. |
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