TEXTE Environmental Impacts of Exhaust Gas Cleaning Systems for Reduction of SOx on Ships — Analysis of status quo 
Report compiled within the framework of the project ImpEx 
8 Outlook 
The present review on the status quo of EGCS as part of the project ImpEx (WP 1), with special 
{ocus on the environmental aspects of the discharge water, covered technical aspects, market 
analysis, the regulatory framework and recent research activities related to this topic. The 
collated information and main findings will serve as guidance for the upcoming work packages 
within the project ImpEx, while the open issues for discussion will be addressed. 
The next project activity is a sampling campaign on board ships including parallel 
measurements to the water online monitoring, as this was found to be a crucial issue. The water 
samples will be chemically and ecotoxicological characterized. The chemical analysis will include 
quantitative determination of heavy metals, oil content, PAHgpa16, alkyl PAHs and a qualitative 
determination of further substances by GC-MS screening. The ecotoxicological assays will 
include WET and in vitro tests. The results will serve as basis for the realization of an 
environmental risk assessment and will be presented in workshops and the relevant 
committees. 
The technical aspects of EGCS such as the type of system, differences in the technologies 
(especially for water treatment units) and volume flowrates will be taken into account for the 
evaluation of the results from the chemical and ecotoxicological analysis. 
The current status and forthcoming developments on the technology, market and regulatory 
framework were compiled in this review. Changes in these areas are expected in the short term 
and will be followed for the duration of the project. 
The present review and future results from the ImpEx project are planned to be considered for a 
non-conservative dispersion modelling, including biogeochemical processes, within a potential 
follow-up UBA project. 
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