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10 results on '"Bortolami M"'

4. PCDD/F and dioxin-like PCB minimization: A 13-year experimental study along the flue gas cleaning system of a secondary aluminium refining plant

Author

Collina, E, Bortolami, M, Franzoni, F, Lasagni, M, Piccinelli, E, Pitea, D, COLLINA, ELENA MARIA, LASAGNI, MARINA, PICCINELLI, ELSA, PITEA, DEMETRIO, Collina, E, Bortolami, M, Franzoni, F, Lasagni, M, Piccinelli, E, Pitea, D, COLLINA, ELENA MARIA, LASAGNI, MARINA, PICCINELLI, ELSA, and PITEA, DEMETRIO

Abstract

A 13-years study shows that a careful design of the flue gas cleaning system of a full scale secondary aluminium refining plant results in a minimized and very stable emission of Polychlorinated Dibenzo–p–Dioxins (PCDD), Polychlorinated Dibenzo Furans (PCDF) and dioxin-like Polychlorinated Biphenyls (PCB). The value of equivalent toxicity of PCDD/F in the emission was definitely of an order of magnitude less than the regulation limit. In the initial flue gas cleaning system, the PCB mean fingerprint after the slow cooling of the flue gas was typical of de novo synthesis. Instead, in the presence of quenching, there was evidence that the fast cooling of flue gas prevented the PCB de novo synthesis. In fact, the PCB profile was similar to that in the air collected from the aspiration hoods for the quenching. The gas-phase and solid-phase partitioning of PCBs, before and after the fabric filters, highlights the predominant role of the vapor phase with respect to the total removal efficiency. The polycyclic aromatic hydrocarbons breakdown could be an additional de novo formation pathway even in industrial plants.

Published
2017

10. PCDD/F and dioxin-like PCB minimization: A 13-year experimental study along the flue gas cleaning system of a secondary aluminium refining plant

Author

Elsa Piccinelli, Elena Collina, Michele Bortolami, Francesco Franzoni, Demetrio Pitea, Marina Lasagni, Collina, E, Bortolami, M, Franzoni, F, Lasagni, M, Piccinelli, E, and Pitea, D

Subjects
Pollution, Flue gas, Environmental Engineering, Polychlorinated Dibenzodioxins, Health, Toxicology and Mutagenesis, media_common.quotation_subject, chemistry.chemical_element, 02 engineering and technology, 010501 environmental sciences, 01 natural sciences, Aluminium, Environmental Chemistry, PCDD/F, Polycyclic Aromatic Hydrocarbons, Secondary aluminium refining plant, Environmental Restoration and Remediation, 0105 earth and related environmental sciences, Refining (metallurgy), media_common, Quenching, PCB, Slow cooling, Public Health, Environmental and Occupational Health, General Medicine, General Chemistry, Dibenzofurans, Polychlorinated, 021001 nanoscience & nanotechnology, Polychlorinated Biphenyls, Removal efficiency, Dioxins and Dioxin-like Compounds, De novo synthesis, chemistry, Environmental chemistry, Chemical Industry, Total removal, Environmental Pollutants, Gases, 0210 nano-technology, Aluminum
Abstract

A 13-years study shows that a careful design of the flue gas cleaning system of a full scale secondary aluminium refining plant results in a minimized and very stable emission of Polychlorinated Dibenzo-p-Dioxins (PCDD), Polychlorinated Dibenzo Furans (PCDF) and dioxin-like Polychlorinated Biphenyls (PCB). The value of equivalent toxicity of PCDD/F in the emission was definitely of an order of magnitude less than the regulation limit. In the initial flue gas cleaning system, the PCB mean fingerprint after the slow cooling of the flue gas was typical of de novo synthesis. Instead, in the presence of quenching, there was evidence that the fast cooling of flue gas prevented the PCB de novo synthesis. In fact, the PCB profile was similar to that in the air collected from the aspiration hoods for the quenching. The gas-phase and solid-phase partitioning of PCBs, before and after the fabric filters, highlights the predominant role of the vapor phase with respect to the total removal efficiency. The polycyclic aromatic hydrocarbons breakdown could be an additional de novo formation pathway even in industrial plants.

Published
2017

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