Air emissions

Alongside greenhouse gas emissions, Linde also monitors emissions of air pollutants. Normally, the Group’s air separation plants hardly produce any direct emissions to air. In other production processes, however, inorganic gases such as carbon monoxide (CO), sulphur oxides (SOx), nitrogen oxides (NOx), ammonia (NH3) and volatile organic compounds (VOCs) are released as emissions into the air. VOC emissions are mainly released during the coating and cleaning of metals such as gas cylinders, storage tanks and plant components.

Emissions to air1 (in tonnes)

 

 

 

 

 

 

 

 

 

 

 

2012

 

2011

 

2010

 

2009

Assured by KPMG Sustainability

1

We monitor compliance with local regulatory requirements worldwide and report our data for all sites legally obliged to report emissions.

VOCs (volatile organic compounds)

 

96

 

206

 

182

 

236

NH3 (ammonia)

 

11

 

28

 

70

 

78

CO (carbon monoxide)

 

1,745

 

1,566

 

1,747

 

2,161

NOx (nitrogen oxides)

 

796

 

1,070

 

717

 

856

SOx (sulphur oxides)

 

391

 

543

 

620

 

730

Together with our customers, we are developing solutions for reducing emissions of polluntants into the air. The use of pure oxygen, for example, offers environmental gains in foundries, heat treatment processes, in the steel industry, during the production of non-ferrous metals, waste treatment and recycling processes. Using oxygen instead of air improves energy efficiency while also reducing CO2 and nitrogen oxide emissions. In 2012, we developed the COROX®LowNOx process to make glass manufacturing more environmentally friendly. This involves feeding additional oxygen into the furnace, which improves the quality of the burner flame and lowers the required temperature level, thus cutting emissions of nitrogen oxides.

Responsibility along the value chain

Highlighted: areas in the value chain connected to the topics covered on this page

Global Reporting Initiative

UN Global Compact

Measuring sustainability