Greenhouse Gases -
GREENHOUSE GASES (GHG)
Praxair has impacts on both direct GHG emissions, such as from the combustion of fuels and in producing hydrogen, as well as indirect GHG emissions, such as the emissions emitted from a power plant to provide us the electricity we use. While Praxair has made great gains in our efficiency of GHG emitted to product produced, our overall GHG emissions have been increasing recently due to new plants coming on-line.
GHG EMISSIONS IN METRIC TONS OF CO2e
Energy Use -
Praxair is vigilant at managing its energy footprint and has a range of design and operational initiatives to reduce operational energy consumption. By the end of 2020, Praxair expects to see 8 million MWH in cumulative savings from a 2009 baseline.
Energy savings (electricity, natural gas, and fuel) are collected as part of the overall environmental savings reported per relevant sustainable productivity project. Total sustainable productivity in 2015 yielded savings equivalent to 400,000 MT of CO2e emissions. These projects provide energy savings from enhancing the energy efficiency of Praxair's buildings, processes and transportation fleet.
We track and report the amount of energy we obtain directly from fuel sources such as natural gas and oil used in boilers and process heaters, as well as diesel fuel we use for transportation. See the chart below.
|YEAR||DIRECT Energy in MILLION MWH|
We track and report energy use at facilities where we take direct responsibility for electrical and other energy costs, and at onsite facilities where we operate but our customers pay the utility costs.
|Year||Global Electricity/STEAM Purchased in millions of MWH|
Air Emissions -
We report global NOx, SO2 and VOC emissions. A significant proportion of NOx and SO2 emissions come from transportation activity and miles driven to deliver product. We continue to improve our logistics efficiency to reduce these emissions through various fuel efficiency measures and improved vehicle fuel combustion.
45% percent of NOx emissions come from product transportation in trucks. Another 52% comes from hydrogen facilities and Air Separation Units (ASUs). See the chart below for emissions per year.
|year||NOx Emissions in Metric Tons|
Sulfur Dioxide (SO2)
Since 2004, we have experienced a 67% overall decrease in SO2 emissions. This reduction is mostly attributed to the reduction of sulfur in transportation fuel with the implementation of low sulfur and ultra-low sulfur diesel that is being used more and more worldwide. Total SO2 emissions are reported below.
|Year||SO2 Emissions in Metric Tons|
Volatile Organic Compounds (VOCs)
51% of VOC emissions at Praxair come from acetylene production and flammable gas cylinder filling and 12% comes from Praxair driver emissions. See our yearly VOC emissions reported below.
|Year||direct voc Emissions in Metric Tons|
Ozone Depleting Substances (ODS)
We measure the quantity of ozone-depleting substances (ODSs) contained in our equipment as well as any emissions to the atmosphere. We are aggressively pursuing opportunities to reduce the use and emission of ODSs through the use of alternative non-ODS substances, enhanced leak detection and repair programs for equipment that still use ODSs.
2015 ODS RELEASES IN METRIC TONNES
|ODS||Actual Amount||cfc-11 equivalent|
Waste & Recycling Management -
Praxair tracks solid wastes (e.g., trash) and special and hazardous wastes. It also tracks wastes by disposal method: landfill, recycling and other (incineration, waste-to-energy, etc.). Total waste disposed in 2015 was 70,700 MT, of which 64,742 MT (92%) was non-hazardous and 5,958 MT (8%) was hazardous waste (the latter as defined by national regulation at the point of generation).
Of the total waste generated in 2015, 87% was diverted from landfill either by recycling, re-purposing, or other (for example, burning waste for energy).
Total waste generated in 2015 decreased.
Praxair does not report waste by type that is reused or recycled; these records are not provided by vendors. Since this material is not being handled as a waste, it is not a management metric. Compostable waste is not reported since Praxair waste is typically not compostable. Take a look at our reported waste by year.
worldwide waste disposed of in metric tons
Water Use -
We report water use for approximately 391 sites where our monthly use exceeds 10,000 gallons. Water is reported as water withdrawals not including once-through, non-contact cooling water, which is drawn from and discharged to the same body of water with no change in quality. Of the water we use, 16% is supplied by municipalities or other water utilities, while the remaining 84% is provided by our customers or procured from surface and well waters, or other industrial sources.
In 2015, Praxair's global water use was 3% higher than in 2014, this was due to the start-up of new facilities. See our water consumption per year below.
|year||water USE in million cubic meters|
Toxic Release Inventory (TRI) -
Each year, we report our total on-and off-site toxic releases for the Environmental Protection Agency (EPA) Toxic Release Inventory (TRI). The 2012 spike is due to a significant catalyst change out event. In 2015, the majority of releases were ammonia used in the neutralization of NOx emissions and methanol, which is flared and destroyed. See the chart below for our total U.S. TRI releases in pounds per year.
|year||U.S. TRI ON-AND OFF-Site RELEASES (POUNDS)|