What is it about?
Many organic contaminants, including polycyclic aromatic hydrocarbons (PAHs), are released during the production of carbon and graphite electrodes. We studied the concentration and mass streams of 16 PAHs released into the air via flue gases during the processes involved in the storage, handling, calcination and mixing of raw materials, as well as the forming, baking, impregnation and graphitising of electrodes. Individual emission sources and production cycles differ significantly in PAH emission profiles. The biggest single source of PAH emissions is the baking of carbon electrodes, pressing of the solid raw materials and pitch, and storage or handling of liquid raw materials.
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Why is it important?
The paper presents the results of PAHs air emission measurements for all main production processes used in industry of carbon and graphite products. Flue gas concentrations, emission rates and averaged percentage of emissions for 16 PAHs are determined.
Perspectives
The results can be used in the Best Available Techniques (BATs) reference document for the non-ferrous metal industry or new sector guidelines for this industry.
Robert Oleniacz
Akademia Gorniczo-Hutnicza im Stanislawa Staszica w Krakowie
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This page is a summary of: Emission of polycyclic aromatic hydrocarbons (PAHs) during the production of carbon and graphite electrodes, March 2010, Taylor & Francis,
DOI: 10.1201/b10566-12.
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