Comparing emissions of polyaromatic hydrocarbons and metals from marine fuels and scrubbers

• Presenting emission factors to the marine environment from use of scrubbers. Scrubber discharge water is enriched with metals and polyaromatic hydrocarbons (PAHs). Heavy fuel oil combustion scrubbers increase relative environmental load. Scrubbers introduce new contamination sources chromium environment. In January 2020, global regulations were implemented limit maximum sulphur content in fuels. As an alternative switch compliant fuels, allow for installations exhaust gas cleaning systems, e.g. scrubbers, that enables a continued less expensive heavy oils (HFOs). Characterization scrubber shows acidified also becomes contaminants, large quantities (PAHs) are thus being discharged directly When emissions contaminants atmosphere evaluated simultaneously, results show HFO, installed, generates higher both PAHs compared MGO. This highlights importance including atmospheric perspective when comparing loads impact shipping.