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The world’s most advanced exploration, research, and media vessels demand the highest standards in technology and performance, that’s why they use Siyanda Blue’s AUS40.
AUS40 in South Africa: Marine-Grade AdBlue from Siyanda Blue:
Powering the Future of Exploration with AUS40
The world’s most advanced exploration, research, and media vessels demand the highest standards in technology and performance. That includes using the most advanced AdBlue. That’s why they use Siyanda Blue’s AUS40 – to keep emissions low and operations efficient.
The Impact of Marine Emissions
Shipping is essential to global trade, but it comes with an environmental cost. Marine vessels burn diesel fuel, releasing carbon dioxide (CO₂) and nitrogen oxides (NOₓ)—two major pollutants. The Fourth IMO Greenhouse Gas Study 2020 reported that international shipping emitted 919 million tonnes of CO₂ in 2018, making up 2% of global emissions. Research on European maritime activity in 2019 found ships produced over 145.5 million tonnes of CO₂, with an emission factor of 3.12 tonnes of CO₂ per tonne of fuel.
NOₓ is another critical issue. Formed at high combustion temperatures, NOₓ contributes to acid rain, smog, and respiratory diseases. A study by the International Council on Clean Transportation (ICCT) found that marine diesel engines produce between 8.1 to 12 grams of NOₓ per kilowatt-hour, depending on engine load. Estimates suggest that shipping is responsible for 15% of global NOₓ emissions.
How AUS40 Reduces NOₓ Emissions
The most effective way to cut NOₓ in marine engines is through Selective Catalytic Reduction (SCR) technology. SCR systems inject a high-purity urea solution—like AUS40—into the exhaust, triggering a reaction that converts NOₓ into harmless nitrogen and water vapor. This process reduces NOₓ emissions by up to 95%, helping vessels comply with IMO Tier III and other strict environmental regulations.
What is AUS40?
AUS40 is a 40% urea, 60% deionized water solution designed specifically for marine SCR systems. It ensures efficient NOₓ reduction while maintaining engine performance and fuel efficiency. Unlike AdBlue, which is used in trucks and industrial vehicles, AUS40 is formulated for large marine diesel engines, where higher concentrations are required for optimal performance.
Who Needs AUS40?
Any vessel equipped with SCR technology relies on AUS40 to stay compliant and environmentally responsible. This includes:
- Commercial Shipping – Cargo ships, tankers, and container vessels operating in regulated waters.
- Passenger Ferries and Cruise Ships – Reducing emissions in coastal regions and port cities.
- Offshore Rigs and Support Vessels – Minimizing the environmental impact of offshore operations.
- Luxury Yachts and Research Vessels – Advanced vessels that prioritize high-performance, low-emission solutions.
How AdBlue and AUS40 Work in SCR Systems
Both AdBlue (for road vehicles) and AUS40 (for marine applications) are high-purity urea solutions injected into the exhaust stream of diesel engines equipped with an SCR system. Here’s how they work:
- Injection into the Exhaust – A controlled amount of AdBlue or AUS40 is sprayed into the hot exhaust gases before they enter the SCR catalyst.
- Thermal Decomposition – Heat converts urea (CO(NH₂)₂) into ammonia (NH₃) and carbon dioxide (CO₂).
- NOₓ Reduction – Inside the SCR catalyst, ammonia reacts with NOₓ gases, breaking them down into harmless nitrogen (N₂) and water vapor (H₂O).
- Clean Emissions – The treated exhaust leaves the system with significantly reduced NOₓ levels, often meeting IMO Tier III and Euro 6 environmental standards.
Why Siyanda Blue’s AUS40?
Quality matters. Impurities in AUS40 can damage SCR systems, leading to costly repairs and inefficiencies. Siyanda Blue ensures:
- Ultra-pure composition – Protects equipment and maximizes NOₓ reduction.
- ISO-certified production – Meets strict ISO 18611 industry standards.
- Reliable supply – Keeping vessels compliant and running efficiently.
A Cleaner Future for Shipping
With tighter emissions regulations worldwide, AUS40 is no longer optional—it’s essential. More vessels are adopting SCR technology, and the right supplier makes all the difference.
Siyanda Blue’s AUS40 is manufactured to meet strict ISO 18611 standards, ensuring purity and consistency. Siyanda Blue provides AUS40 you can trust, ensuring cleaner engines, lower emissions, and a smarter approach to maritime sustainability.
Get in touch to learn how we can support your fleet.
Sources:
(imo.org)
(publications.jrc.ec.europa.eu)
(tandfonline.com).
(theicct.org)
(jmr.unican.es).
(en.wikipedia.org)