Connect with us

Business

Chalmers University of Technology research reveals large emissions from ship scrubbers in Baltic Sea

Scrubber is responsible for up to nine percent of certain emissions of carcinogenic and environmentally harmful substances in the Baltic Sea, which is considerably more than was previously known.

Admin

Published

on

Erik Ytreberg 250x300 1

Chalmers University of Technology on Wednesday (19 October) said a new research from the university revealed that the discharge water from ships’ exhaust gas treatment systems, also known as scrubbers, is responsible for up to nine percent of certain emissions of carcinogenic and environmentally harmful substances in the Baltic Sea, which is considerably more than was previously known.

Furthermore, the number of ships equipped with scrubbers have tripled since the study was carried out. The Baltic Sea is considered one of the world's most polluted seas.

​The researchers' study is unique in its kind and was commissioned by the Swedish Transport Agency and the Swedish Agency for Marine and Water Management to investigate the environmental impact from scrubbers in the Baltic Sea compared to other sources of environmental contaminants.

One of the researchers behind the study is Ida-Maja Hassellöv​, Professor and researcher at the Division of Maritime Studies at Chalmers University of Technology:

“For many years, we’ve flagged the fact that scrubbers account for disproportionately large emissions of hazardous and acidifying substances into the marine environment. In spite of this message, we have seen a significant increase in the number of scrubber installations as it is economically beneficial for the shipowner. Therefore, it is very important that authorities and decision-makers now react and implement measures to reduce shipping's emissions and impact on the marine environment,” says Ida-Maja Hassellöv.

A growing marine environmental problem

A scrubber is used on ships to clean exhaust gases, primarily to reduce emissions of sulfur sulphur oxides to the atmosphere. However, washing the exhaust gases in seawater traps other contaminants in the seawater and results in the release of hazardous substances to the marine environment. ​

In the Chalmers study, published in the Marine Pollution Bulletin, the researchers found that more than 200 million cubic meters of environmentally hazardous scrubber water were discharged from ships that used exhaust gas cleaning systems in the Baltic Sea - in just one year. The study showed that scrubber wash water accounts for up to 9 percent of the emissions of certain cancer-causing polycyclic aromatic hydrocarbons (PAHs) into the Baltic Sea. The study also revealed that ships painted with copper-based antifouling paints account for a third of the total supply of copper to the Baltic Sea. Copper in antifouling paints is already a known environmental problem as the metal cannot be degraded in the environment and therefore leads to high levels in water, sediment and soil. But exactly how much of the load of copper boat and ship traffic accounts for, has previously been unknown. Also, the cancer-causing PAHs are difficult to degrade and can spread widely in the environment before breaking down. 

Erik Ytreberg​, Associate Professor and researcher at the Division of Maritime Studies at Chalmers University of Technology, is the lead author of the scientific study: 

“Our results show that shipping accounts for a significant proportion of hazardous substances to the Baltic Sea, above all through antifouling paints and discharge of wash water from open loop scrubbers. PAHs are highly toxic to both humans and aquatic organisms as they are, among other things, carcinogenic. Worth noting is that the study's data was collected in 2018, and at that time there were approximately 180 ships with scrubbers in the Baltic Sea. Since then, these ships have increased significantly and in 2021 there were almost 600 ships equipped with scrubbers in the Baltic Sea,” says Erik Ytreberg. 

Proposal for a future ban

The new research results have led the Swedish Transport Agency and the Swedish Agency for Marine and Water Management to propose a ban on the discharge of so-called scrubber water into the internal waters of the Baltic Sea. If the Swedish politicians follow the line of the researchers and the authorities, Sweden will be the first country in the Nordic region to introduce the ban.

Today, scrubbers are installed on over 4,000 ships around the world. In the Baltic Sea area, only Germany already applies the same legislation, even though several other countries in Europe regulate scrubber discharges in their ports. The Chalmers researchers welcome the proposal but hope for even more extensive regulation in the future.

“The proposal that Sweden should ban the discharge of wash water into Swedish inland waters is good, but at the same time it means that only 1 - 2 percent of the discharges that occur from scrubbers in the Baltic Sea today will be regulated. Sweden could also propose a ban in our territorial waters, which would mean that roughly 15-17 percent of emissions to the Baltic Sea could be regulated. But the biggest effect would obviously come from an international ban, where all the countries around the Baltic Sea agree on a joint regulation of the discharge of scrubber water,” says Erik Ytreberg.

 

Photo credit: Venti Views on Unsplash
Published: 25 October, 2022

Continue Reading

Incident

Singapore: Bunker spill leads to checks on all fuel pipes at other Police Coast Guard bases

Police said fuel pipes at the other three bases at Loyang, Lim Chu Kang and Gul are also being checked with inspections expected to be wrapped up on 10 February.

Admin

Published

on

By

RESIZED bunker tanker singapore

The recent oil leak incident at Police Coast Guard (PCG) Brani Regional Base has prompted checks on all fuel pipes at PCG’s three other bases for leaks, according to The Straits Times on Monday (10 February). 

Responding to queries from the local news provider, the police said all fuel pipes at Brani Regional Base were inspected on 6 February while fuel pipes at the other three bases at Loyang, Lim Chu Kang and Gul are also being checked with inspections expected to be wrapped up on 10 February. 

The police also said that a preliminary assessment on the cause of the leak might be due to micro cracks in a damaged fuel pipe as a result of repeated twisting of the pipe due to the movement of the pontoons caused by tidal changes.

On 6 February, Singapore authorities confirmed that a diesel oil leak was discovered at the Brani Regional Base on 5 February, at around 11.40am (Singapore Time). 

According to a joint statement by Singapore Police Force, Maritime and Port Authority (MPA) and National Environment Agency (NEA), about 23 metric tonnes had leaked from a damaged shore fuel hose used to refuel patrol craft at Selat Sengkir. 

The leak was eventually isolated at about 3.40pm and there were no oil slicks observed.

Related: Singapore confirms bunker spill from damaged shore fuel hose at Brani Regional Base

 

Photo credit: Manifold Times
Published: 11 February, 2025

Continue Reading

Biofuel

NYK conducts first Japan bio bunker fuel trial on coal carrier for domestic power utility firm

Firm said it has started a biofuel test run on Noshiro Maru, operated by Tohoku Electric Power, marking the first time in Japan that a coal carrier has been used to test biofuel for a domestic power utility firm.

Admin

Published

on

By

NYK conducts first Japan bio bunker fuel trial on coal carrier for domestic power utility firm

Japanese shipping firm NYK on Monday (10 February) said it has started a biofuel test run on its coal carrier Noshiro Maru, which is operated by Tohoku Electric Power on 9 February.

This is the first time in Japan that a coal carrier has been used to test biofuel for a domestic power utility company. Mitsubishi Corporation Energy in the Keihin area facilitated the supply of biofuel for the vessel.

Biofuels are made from organic resources (biomass) of biological origin, such as agricultural residues and waste cooking oil, and are considered to produce virtually zero carbon dioxide (CO₂) emissions when combusted.

“Since they can be used in heavy-oil-powered ship engines, which are common on large merchant ships, biofuels are considered a key means of reducing greenhouse gas (GHG) emissions in the transition period from heavy oil to zero-emission fuels,” NYK said. 

“Using biofuel to reduce GHG emissions during sea navigation also contributes to reducing Scope 3 GHG emissions generated by transporting customers’ cargo.”

NYK added it will continue to focus on introducing biofuels and other next-generation fuels, and will contribute to reducing GHG emissions in our customers' supply chains while promoting decarbonisation in marine transport.

 

Photo credit: NYK
Published: 11 February, 2025

Continue Reading

Biofuel

IBIA welcomes IMO move to draft guidance change on carriage of bio bunker fuels

IBIA welcomed agreement by IMO’s Sub Committee on PPR 12 to draft Interim Guidance on the carriage of blends of biofuels and MARPOL Annex I cargoes by conventional bunker ships.

Admin

Published

on

By

RESIZED IBIA logo

The International Bunker Industry Association (IBIA) on Monday (10 February) said it submitted a document to IMO on the carriage of biofuels for supply to a ship for use as fuel oil on board that ship in November 2023.

This highlighted that as conventional bunker vessels were limited in carrying fuel oil of no more than 25% biofuel it presented a potential impediment to the global adoption of biofuels as fuel oil for ships and so to the ambition for the decarbonization of international shipping in the short term, as set out in the 2023 IMO GHG Strategy.

“IBIA therefore welcomes the agreement by IMO’s Sub Committee on Pollution Prevention and Response (PPR 12) to draft Interim Guidance on the carriage of blends of biofuels and MARPOL Annex I cargoes by conventional bunker ships,” it said on its website. 

The guidance allows conventional bunker ships certified for carriage of oil fuels under MARPOL Annex I to transport blends of not more than 30% by volume of biofuel, as long as all residues or tank washings are discharged ashore, unless the oil discharge monitoring equipment (ODME) is approved for the biofuel blend(s) being shipped. 

“The Interim Guidance is expected to be approved by IMO’s Marine Environment Protection Committee (MEPC 83) in April,” IBIA added. 

“IBIA’s membership represents stakeholders from across the global marine fuel value chain, and being able to draw on this technically strong and credible resource will, in its role of having consultative status to the IMO, mean that IBIA will continue to bring important matters to the attention of the wider IMO membership for due consideration.”

 

Photo credit: International Bunker Industry Association
Published: 11 February, 2025

Continue Reading
Advertisement
  • Sea Trader & Sea Splendor
  • Zhoushan Bunker
  • Consort advertisement v2
  • RE 05 Lighthouse GIF
  • SBF2
  • Aderco advert 400x330 1
  • EMF banner 400x330 slogan
  • v4Helmsman Gif Banner 01

OUR INDUSTRY PARTNERS

  • SEAOIL 3+5 GIF
  • E MARINE LOGO
  • Triton Bunkering advertisement v2
  • Singfar advertisement final
  • HL 2022 adv v1


  • Energe Logo
  • Mokara Final
  • Auramarine 01
  • endress
  • Victory Logo
  • Synergy Asia Bunkering logo MT
  • PSP Marine logo
  • intrasea
  • pro liquid
  • Cathay Marine Fuel Oil Trading logo
  • 400x330 v2 copy
  • LabTechnic
  • Advert Shipping Manifold resized1
  • VPS 2021 advertisement
  • Headway Manifold

Trending