Remote sensing of sulphur and particle pollution from ships - from a cost-efficient approach


The aim of the current MUDP-project “Remote sensing of sulphur and particle pollution from ships – from a cost-efficient approach” was to develop and identify the potential for simple and improved methods for monitoring sulphur content in fuel from ships by means of remote sensing techniques. Such methods could enable relevant authorities to monitor and regulate SOx emissions from ships in a cost-efficient manner. This is especially relevant in light of recent and future IMO regulations lowering the allowance on sulphur content in fuel from 0.5 to 0.1 %S in SECAs (2015) and to a maximum of 0.5 %S globally (from 2020). The project primarily focuses on estimating the sulphur content by plume measurements (remote sensing) when ships pass the Great Belt Bridge. Extensive CFD modeling is performed to determine the optimal measurement position(s) on the bridge, and IR camera technology is used to further support the modeling results. Modified NDIR detectors are used as CO2 sensors and two types of technologies are used to perform SO2 measurements; electrochemical sen-sors and a pulse fluorescence analyzer. The main challenges for measuring the plumes from the bridge deck with these technologies include dilution and short duration of the plumes. Furthermore, the SO2 electrochemical sensor is cross-sensitive to NO2 in the plume. However, it is concluded that it is possible to distinguish between 0.1 and 0.5 %S in fuel using cost-efficient electrochemical sensors, and 0.1 and 0.35 %S using pulse the fluorescence analyzer. Miljøprojekt 2031, 2018

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