thyssenkrupp Uhde installs EnviNOx® technology at CSBP’s nitric acid plants in Australia, cutting N2O emissions and supporting WesCEF’s 2030 decarbonization targets.
thyssenkrupp Uhde has been chosen by CSBP—a chemicals and fertilizers business operating under Wesfarmers Chemicals, Energy & Fertilisers (WesCEF)—to implement its patented EnviNOx® emissions-reduction technology at two nitric acid plants located at CSBP’s Kwinana facility in Western Australia. The project represents another step forward in reducing greenhouse gas emissions from industrial operations and strengthens ongoing decarbonization efforts within the fertilizer and chemicals sector.
The agreement follows the successful deployment of the EnviNOx® system at CSBP’s Nitric Acid Ammonium Nitrate 3 (NAAN3) plant in 2025. Building on that achievement, the new contract will see thyssenkrupp Uhde extend the same advanced emission-control technology to CSBP’s remaining nitric acid facilities, NAAN1 and NAAN2. Once completed, all three nitric acid plants—NAAN1, NAAN2, and NAAN3—at the Kwinana site will be equipped with EnviNOx® systems designed to significantly reduce emissions of nitrogen oxides (NOx) and nitrous oxide (N2O).
The technology also incorporates a high-performance catalyst developed in partnership with BASF, further enhancing the system’s efficiency in mitigating harmful emissions generated during nitric acid production.
The EnviNOx® technology has already demonstrated impressive environmental performance at the NAAN3 plant. At that facility, the system has successfully removed more than 98% of nitrous oxide emissions, achieving outlet concentrations below 1 parts per million by volume (ppmv). Nitrous oxide is widely recognized as a powerful greenhouse gas, with a global warming potential more than 270 times higher than carbon dioxide. Because of its significant climate impact, reducing N2O emissions from industrial processes is considered a critical component of global climate mitigation strategies.
By implementing the technology at the NAAN1 and NAAN2 plants, CSBP is expected to reduce greenhouse gas emissions by more than 60,000 tons of carbon dioxide equivalent each year. These reductions will play a meaningful role in supporting WesCEF’s sustainability targets, which include lowering Scope 1 and Scope 2 emissions by 30% by the year 2030 compared with the company’s 2020 baseline. The initiative also aligns with broader ambitions to progress toward net-zero emissions in the long term.
In addition to environmental benefits, the project is expected to contribute to the decarbonization of industries that depend on nitric acid and ammonium nitrate products, particularly agriculture and mining. By enabling the production of lower-emission fertilizers and industrial chemicals, the implementation of EnviNOx® technology supports both climate objectives and the sustainability of key industrial sectors.
Nadja Håkansson, Chief Executive Officer of thyssenkrupp Uhde and Chief Operating Officer of thyssenkrupp Decarbon Technologies, emphasized the importance of addressing emissions from industries that are difficult to decarbonize. She noted that technologies like EnviNOx® provide reliable and effective solutions that help companies reduce their environmental footprint. According to Håkansson, CSBP’s decision to expand the use of EnviNOx® across all three of its nitric acid plants reflects strong confidence in the technology and a shared commitment to tackling climate change.
Leigh Meyers, Chief Operating Officer of Wesfarmers Chemicals, Energy & Fertilisers, highlighted the positive results already achieved with the installation of the abatement system at NAAN3. He stated that the technology has significantly lowered nitrous oxide emissions at the facility, and expanding its use to the remaining plants will accelerate progress toward the company’s 2030 emissions-reduction targets.
The EnviNOx® system functions as a tertiary abatement solution installed in the tail-gas treatment section of nitric acid plants. Designed to be modular and scalable, the technology can be adapted to different plant configurations and production capacities, enabling near-complete removal of both N2O and NOx emissions.
With more than 60 EnviNOx® installations worldwide across multiple industrial sectors, thyssenkrupp Uhde has demonstrated the technology’s reliability and scalability. The CSBP project further reinforces the role of advanced emission-control technologies in supporting global industrial decarbonization and ensuring sustainable production in sectors essential to agriculture and mining.
