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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Perfluorocarbon Generation and Emissions from Industrial Processes
Presentation Title Updated Factors for Calculating PFC Emissions from Primary Aluminum Production
Author(s) Jerry Marks, Pernelle Nunez
On-Site Speaker (Planned) Jerry Marks
Abstract Scope The IPCC made recommendations for calculations of PFC emissions from industrial processes in the 2006 IPCC Guidelines for National Greenhouse Gas Inventories. The widely used Tier 1 and Tier 2 calculation methodology is based on data available from the industry from 2005 and before. While the Hall–Héroult process utilizing carbon anodes predominates global production there has been substantial changes in process control technology, cell sizes and line currents have grown with cell size. There have also been changes in geographic centers of production with China now dominating global production. The current study analyzes PFC measurement data collected since the 2006 IPCC Guidelines and proposes updated Tier 1 emission factors and Tier 2 equation factors for calculating PFC emissions. The proposed new methodology also accounts for low voltage anode effect emissions which were not included in current IPCC methodology.
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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