Production of aluminum from its ores at aluminum smelters results in carbon dioxide CO2, carbon monoxide CO, sulfur dioxide SO2, and hydrogen fluoride HF gas emissions to the atmosphere. Read about our solutions for aluminum industry!

Emission Limit Values for Aluminum Smelter

Typically, aluminum smelters have emission limit values (ELVs) for sulfur dioxide SO2 and hydrogen fluoride HF emissions. These emissions should be measured accurately, to ensure the smelter does not exceed its emission limit values. If you would like to learn more about emissions monitoring, download our guide, free of charge: Download Emissions Monitoring Guide.

Fluoride Compounds Have High Global Warming Potential (GWP) Values

In addition, several fluoride compounds may be produced during the aluminum production process. These compounds include carbon tetrafluoride CF4, hexafluoroethane C2F6, sulfur hexafluoride SF6, and silicon tetrafluoride SiF4. These additional emission components are problematic, as they have high Global Warming Potential (GWP) values.

GWP is a Relative Measure

The GWP is a relative measure designed to demonstrate how much heat a greenhouse gas (GHG) traps in the atmosphere. Emission of one kilogram of carbon tetrafluoride into the atmosphere has the potential of heating the atmosphere as much as 7,000 kilograms of carbon dioxide over the next 100 years.

Production of aluminum results in a large variety of gases that need to be measured.

Our Solutions: Continuous Monitoring System and Portable Gas Analyzer

Gasmet manufactures portable FTIR gas analyzers and stationary FTIR emissions monitoring systems. An FTIR analyzer works by simultaneously scanning entire infrared spectrum. Our Calcmet software then calculates the concentrations of each gas in the sample based on the characteristic absorption. All the gases in the sample can be measured simultaneously because the entire infrared spectrum is scanned at once. This allows for very quick multicomponent measurements and for compensation for any cross-interference.

The Continuous Emissions Monitoring System CEMS II e offers TÜV and MCERTS certified solution (QAL1) for a wide range of demanding emission monitoring applications. The CEMS II e system utilizes Fourier Transform Infrared Spectroscopy FTIR technology.

The Gasmet DX4000 can be used when you need a portable gas analyzer solution instead of continuous gas monitoring. It is portable FTIR gas analyzer for applications where multiple gas compounds need to be accurately monitored in hot & humid sample gas. Gasmet DX4000 is the world’s smallest FTIR emissions monitoring system.

Why choose Gasmet as your FTIR partner?

Gasmet is an ideal partner for the aluminum industry. Here are the top 5 reasons why you should choose us as your FTIR partner:

  • Multicomponent capability – measure multiple gases simultaneously
  • Adding new gases is easy – no need for hardware changes
  • FTIR emission monitoring systems are available with performance approvals (TÜV, MCERTS)
  • A portable FTIR analyzer allows you to take the lab to the site
  • Simple and low-cost calibration – Gasmet’s FTIR analyzers do not need any span or re-calibrations, only zero calibration with nitrogen needed

What you need to know about emissions monitoring

In this guide we will introduce you to Emissions Monitoring and FTIR (Fourier Transform Infrared) in emissions monitoring. We will also explain what needs to be taken into consideration in an effective set-up for emissions monitoring and present real-life example data measured with Gasmet CEMS II e and CMM. Increase your Emissions Monitoring knowledge by downloading the guide free of charge!


Case: Thetford Power Station

“Individual gas readings are displayed in almost real-time in the control room,” says Plant Manager Andrew Corbyn

Read full case study ❯

See also

Waste Incineration
Power Plants
Cement Production
Raw Gas Measurements
Compliance Measurements
Fertilizer and Nitric Acid Production