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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Perfluorocarbon Generation and Emissions from Industrial Processes
Presentation Title Challenges in Estimating Global CF4 and C2F6 Emissions
Author(s) Eleni Michalopoulou
On-Site Speaker (Planned) Eleni Michalopoulou
Abstract Scope CF4 and C2F6 are very long lived greenhouse gases (GHG) 50.000 and 10.000 yearsrespectively) with a global warming potential (GWP100) of 7390 and 6630. These two perfluorocarbons (PFCs) are almost entirely anthropogenic (with preindustrial levels estimated to be approximately 39 and 0.3 ppt/y). Three main sources have been identified: a) Aluminium Industry (AI), b) Semiconductor Industry (SCI) and c) Rare Earth Smelting (RES). We will give an overview of how those PFCs are emitted by the three industries and will describe the building of an inventory of emissions for both gases that will account for some of the missing factors that have been identified so far. Using information that show the growth of the industries and the rising discrepancies between top-down and bottom up approaches we will demonstrate the importance of having an updated, comprehensive and thorough bottom-up inventory and we will present the first part of the inventory.
Proceedings Inclusion? Planned: Light Metals


An Estimation of PFC Emission by Rare Earth Electrolysis
Attributing PFC Emissions to Different Industries: How Bottom-up Trends Can Complicate Top-down Analyses
Challenges in Estimating Global CF4 and C2F6 Emissions
Conditions and Mechanisms of Gas Emissions from Didymium Electrolysis and Its Process Control
Evaluation of Time Consistency when Quantifying Emissions of Perfluorocarbons Resulting from Low Voltage Anode Effects
Fluorinated Gas Production: Underestimated Source of PFCs?
Low Voltage PFC Measurements and Potential Alternative to Reduce Them at Alcoa Smelters
Methodologies to Measure Greenhouse Gas (GHG) Emissions from Industrial Processes and Determine the GHG Emission Factors
New Algorithm for Calculating CF4 Emissions from High Voltage Anode Effects
New Approach for Quantification of Perfluorocarbons Resulting from High Voltage Anode Effects
Perfluorocarbon Formation during Rare Earth Electrolysis
PFC Emission Reduction in the Semiconductor Industry
PFC Evolution Characteristics during Aluminium and Rare Earth Electrolysis
PFCs from the Chinese Aluminium Sector – Challenges in Emissions Accounting and Further Characteristics
Updated Factors for Calculating PFC Emissions from Primary Aluminum Production
Validation of Online Monitoring of PFC by QCL with FTIR Spectroscopy

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