Green light for scrubbing technology

The Exhaust Gas Cleaning Systems Association (EGCSA) yesterday hailed news that the United States and Canada plan to introduce Emissions Control Areas (ECAs) in North America as an opportunity for shipping to widely incorporate abatement technologies in order to meet the impending laws. The decision taken on 31st March by the United States Environmental Protection Agency (EPA) and Environment Canada will also endorse an 85% reduction in particulate matter alongside SOx and NOx reduction by 2015.

This is the world?s first substantial ruling for the reduction of particulate matter from large ocean-going vessels. Although ECAs have been prevalent in Europe since 2006, neither of the European ECAs (The Baltic Sea and North Sea) have targeted the reduction of particulate matter which is widely recognised as a major cause of cancer and other cardiovascular diseases in coastal areas.

The decision to include particulate matter is even more significant as shipowners will be required to do more than switch to cleaner marine diesel or gasoil fuel, which can only reduce particulate matter by a nominal amount, while smaller and more harmful 2.5 particles may even increase when using cleaner fuels.

Several companies have developed scrubbing technology for marine applications with test results from sea-trials revealing particulate matter reduction of around 80%. EGCSA’s members are confident that that figure can be substantially improved with further development.

Donald Gregory, Director of EGCSA, said: “The US-Canada directive for 230 mile ECAs on the North American East and West coasts sets a new precedent for the reduction in pollution from ships. It has been well-documented that SOx and NOx emissions controls have been put in place through IMO MARPOL Annex VI, however particulate matter has been overlooked, up until now. This new ruling gives a clear mandate for the adoption of scrubbing technologies for the 90,000 port calls that are made by vessels every year in the US and Canada. Simply switching to a lighter marine diesel or gasoil will be a prohibitively costly means of meeting the proposed legislation.” Gregory added.

The US?Canada proposal suggests meeting the new legislation will cost ship owners an additional $145 per tonne to move from High Sulphur Fuel Oil (HSFO) to 0.1% Sulphur marine fuel, however the differential reached was in excess of $500 per tonne in many ports in 2008.

While it is stipulated that 80% NOx must be removed by 2016 under the proposed legislation, the likelihood is that engine technology and additives can meet these requirements. Reducing emissions of SOx and particulate matter to meet the proposed US-Canadian standards can be achieved through the installation of scrubber technology for marine applications thereby rendering ships future-proof to other ECAs currently under consideration. Payback periods when compared against the alternate cost of distillate fuel are miniscule when viewed against the capital cost of scrubber equipment and installation.

In the light of the recent G20 meeting and the re-confirmation of the benefits of world trade, the EGCSA believes that now is the time for the shipping industry to take stock of the commercial benefits that the industry has enjoyed on the back of globalisation and balance that against the need to invest in technology for a sustainable future.