Nitrogen Oxides
Nitrogen Oxides (NOx) are a group of highly reactive gases formed when fuel is burned at high temperatures in the presence of oxygen. In the maritime context, NOx emissions are primarily produced by marine engines and contribute to air pollution and acid rain. The International Maritime Organization (IMO) has set limits on NOx emissions from marine engines to reduce their impact on the environment and human health. The limits vary depending on the engine type, size, and date of installation, and are enforced through the issuance of International Air Pollution Prevention (IAPP) certificates. NOx emissions can be reduced through the use of low-NOx engines, exhaust gas recirculation (EGR) systems, selective catalytic reduction (SCR) systems, and alternative fuels.
Your Previous Searches
Random Picks
- Position Reporting: Position Reporting is the process of regularly communicating the location and status of a vessel to a shore-based authority or other vessels. This is done to ensure safety, security, and efficient management of maritime traffic. Position re ... Read More >>
- King Posts: King Posts are vertical structural members that are used to support the weight of a ship's deck and transfer it to the ship's frames. They are typically made of wood or steel and are located at regular intervals along the length of the ship ... Read More >>
- Open Loop: Open Loop is a type of exhaust gas cleaning system used in ships to reduce the sulfur content of emissions. In this system, seawater is used as a scrubbing agent to remove sulfur oxides from the exhaust gas. The seawater is then discharged ... Read More >>
Top News
Stylists share 4 fashion trends that are in for Gen Xers right now — and 4 the...
It can be hard for Gen X to parse through the endless cycle of fashion trends. So, stylists shared what's in and out for those in their 40s and 50s....
News Source: Business Insider on 2025-03-31
Ocean economy needs protection against wave of threats: OECD...
Sustained growth of blue economy at risk from multiple threats, including climate change and territorial disputes....
News Source: Al Jazeera English on 2025-03-31
Netanyahu nominates new Israeli spy chief despite court order...
Israeli PM is still trying to push firing of former head of Shin Bet agency past Supreme Court....
News Source: Al Jazeera English on 2025-03-31
Hegseth calls Japan indispensable in the face of Chinese aggression...
Defense Secretary Pete Hegseth called Japan an “indispensable partner” in deterring growing Chinese assertiveness in the region and announced upgrading the U.S. military command in Japan to a new ...
News Source: NBC News on 2025-03-31
US, Japan, Philippines stage navy drills in disputed South China Sea...
The United States, Japan and the Philippines have staged joint naval drills to boost crisis readiness off a disputed South China Sea shoal as a Chinese military ship kept watch from a distance...
News Source: ABC News on 2025-03-28