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

机译:从海洋燃料和洗涤器中比较多芳烃和金属的排放

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摘要

In January 2020, new global regulations were implemented to limit the maximum sulphur content in marine fuels. As an alternative to switch to compliant fuels, the regulations allow for installations of exhaust gas cleaning systems, e.g. scrubbers, that enables a continued use of less expensive heavy fuel oils (HFOs). Characterization of scrubber discharge water shows that the acidified water also becomes enriched with contaminants, and large quantities of metals and polyaromatic hydrocarbons (PAHs) are thus being discharged directly to the marine environment. When emissions of contaminants to the atmosphere and the marine environment are evaluated simultaneously, the results show that HFO, with scrubbers installed, generates higher emission factors of both metals and PAHs compared to MGO. This highlights the importance of including both the marine and the atmospheric perspective when comparing environmental loads and impact of contaminants from shipping.
机译:2020年1月,实施了新的全球法规,以限制海洋燃料中的最大硫含量。 作为切换符合燃料的替代方案,规定允许排气清洁系统的装置,例如排气清洁系统。 洗涤器,使得能够继续使用更便宜的重型燃料油(HFO)。 洗涤器排出水的表征表明,酸化水也富含污染物,因此大量的金属和多芳烃(PAHs)因此直接排放到海洋环境中。 同时评估污染物和海洋环境的污染物排放,结果表明,与安装的洗涤器的HFO,与MgO相比,金属和PAHs的较高排放因子产生。 这突出了在比较环境载荷和污染物的影响时包括海洋和大气视角的重要性。

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