Engineering firm thyssenkrupp Uhde has secured a new contract from CSBP—part of Wesfarmers Chemicals, Energy & Fertilisers (WesCEF)—to deploy its patented EnviNOx emissions-reduction technology at two nitric acid plants at the company’s industrial site in Kwinana.

The project will see EnviNOx technology installed at CSBP’s NAAN1 and NAAN2 plants, building on its earlier rollout at the NAAN3 facility in 2025. Once complete, all three nitric acid production plants at the Kwinana complex will be integrated with the emissions-cutting system.

The technology targets two of the sector’s most problematic pollutants—nitrogen oxides (NOx) and nitrous oxide (N2O)—using an advanced catalyst developed with BASF. According to the companies, the EnviNOx system is already eliminating more than 98% of N2O emissions at the NAAN3 plant, bringing outlet concentrations below 1 ppmv.

N2O is one of the most powerful greenhouse gases, with a global warming potential more than 270 times higher than carbon dioxide. Cutting emissions from nitric acid production is therefore seen as a major lever for industrial decarbonisation.

The upgrades to NAAN1 and NAAN2 are expected to reduce more than 60,000 tonnes of CO₂-equivalent emissions each year. The move will help WesCEF meet its target of reducing Scope 1 and 2 emissions by 30% by 2030 compared with 2020 levels, while advancing its longer-term net-zero ambitions.

For thyssenkrupp Uhde, the deal also reinforces its position in industrial emissions-abatement technologies as sectors such as agriculture and mining seek lower-emissions supply chains.

Nadja Håkansson, Member of the Executive Board / COO of thyssenkrupp Decarbon Technologies & CEO of thyssenkrupp Uhde:

“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, Leigh Meyers, Chief Operating Officer, said: “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.”