Emissions
11 March 2026
EnviNOx cuts N2O emissions at CSBP nitric acid plants
thyssenkrupp Uhde has delivered its patented EnviNOx® technology to CSBP’s newest nitric acid plant at Kwinana in Western Australia, achieving more than 98% reduction of nitrous oxide (N2O) emissions and outlet concentrations below 1 ppmv. CSBP – part of Wesfarmers Chemicals, Energy & Fertilisers (WesCEF) – has now signed a further contract for EnviNOx® systems on its NAAN1 and NAAN2 nitric acid plants, meaning all three facilities (NAAN1, NAAN2 and NAAN3) will be integrated with the technology using thyssenkrupp Uhde’s improved EnviNOx® catalyst manufactured by partner BASF.
Major cut in greenhouse gas emissions
The EnviNOx® system at NAAN3 is eliminating more than 98% of N2O emissions, a greenhouse gas with a global warming potential more than 270 times greater than carbon dioxide. N2O outlet concentrations are now below 1 ppmv at the plant, marking a major milestone for industrial emissions reduction.
For NAAN1 and NAAN2, the new projects are expected to reduce more than 60,000 tons of CO2‑equivalent emissions per year. This will significantly support WesCEF’s target to cut scope 1 and 2 emissions by 30% by 2030 from a 2020 baseline and assist its journey to net zero, while enabling lower‑emissions production for customers in the agricultural and mining sectors.
Nadja Håkansson, Member of the Executive Board / COO of thyssenkrupp Decarbon Technologies & CEO of thyssenkrupp Uhde, said: “Reducing emissions from hard-to-abate industrial processes is one of the most effective ways to address climate change. With our patented EnviNOx® technology, we offer proven, reliable and efficient solutions to our global customers. We are proud that CSBP has entrusted us with delivering this technology across all three of their nitric acid plants – a strong signal of confidence in our capabilities and our shared commitment to climate action.”
WesCEF Chief Operating Officer Leigh Meyers added: “The successful commissioning of abatement technology in NAAN3 has materially lowered nitrous oxide emissions at the plant. Extending this technology across our remaining nitric acid facilities will further accelerate progress towards our 2030 emissions reduction target.”
