Researchers seek Stricter rules Against Polluters
A comprehensive study examining the wastewater from shipboard scrubbers has been conducted, though its findings remain under embargo until published in the Marine Pollution Bulletin journal in Spezia, Italy, according to a report by Phys.org from the Isle of Man.The International Convention for the Prevention of Pollution from Ships regulates various forms of shipborne pollution, including air pollution, and imposes strict limits on the sulphur content of marine fuels.In response to these regulations, many vessels—approximately 25% of the global shipping fleet—have adopted exhaust gas cleaning systems (EGCS), commonly referred to as scrubbers, to reduce sulphur oxide emissions.The study, led by Christine Achten from the University of Münster in collaboration with the German Federal Maritime and Hydrographic Agency, analyzed the levels of polycyclic aromatic hydrocarbons (PAH) in scrubber wastewater and their toxic effects on marine ecosystems. researchers claim it is one of the most extensive studies conducted on the subject.Scrubber technology involves spraying water into a ship’s exhaust gases to remove sulphur emissions. Open-loop systems discharge this wastewater directly into the sea, while closed-loop systems recirculate the water with an alkaline solution to minimize discharge.The research emphasizes the environmental risks posed by scrubber wastewater, particularly from open-loop systems, and underscores the need for stricter regulations to mitigate the ecological damage caused by this practice.SeaNews Turkey
