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

11 months ago

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

Related Topics:
Continue Reading

Methanol

Kambara Kisen orders methanol dual-fuel bulker from Tsuneishi Shipbuilding

Firm ordered a 65,700-dwt methanol dual-fuel dry bulk carrier with Tsuneishi Shipbuilding; MOL signed a basic agreement on time charter for the newbuilding that is slated to be delivered in 2027.

Admin

Published

3 days ago

on

September 22, 2023

By

Kambara Kisen orders methanol dual-fuel bulker from Tsuneishi Shipbuilding

Japanese shipowner Kambara Kisen has ordered a 65,700-dwt methanol dual-fuel dry bulk carrier newbuilding from Tsuneishi Shipbuilding Co., Ltd, according to Mitsui O.S.K. Lines (MOL) on Wednesday (20 September).

MOL said it signed a basic agreement on time charter for the newbuilding that is slated to be delivered in 2027. 

The vessel will be designed to use e-methanol produced primarily by synthesising recovered CO2 and hydrogen produced using renewable energy sources, and bio-methanol derived from biogas. 

The vessel's design maximises cargo space while ensuring sufficient methanol tank capacity set to allow the required navigational distance assuming various routes, at the same time maximising cargo space. 

MOL added the vessel is expected to serve mainly in the transport of biomass fuels from the east coast of North America to Europe and the U.K. and within the Pacific region, as well as grain from the east coast of South America and the U.S. Gulf Coast to Europe and the Far East.

Details on the time-charter contract:

Shipowner: Kambara Kisen wholly owned subsidiary
Charterer: MOL Drybulk Ltd.
Charter period 2027: -

Details on the newbuilding methanol dual fuel bulk carrier:

LOA: About 200 m
Breadth: About 32.25 m
Draft: About 13.80 m
Deadweight: About 65,700 MT
Hold capacity: About 81,500m3
Shipyard: Tsuneishi Shipbuilding Co., Ltd.

Photo credit: Mitsui O.S.K. Lines
Published: 22 September, 2023

Continue Reading

Methanol

Argus Media: Alternatives may drive methanol market growth

Driven by low-carbon policies and regulations, the transportation sector — especially the marine fuels industry — could be a source of heightened demand, according to Argus.

Admin

Published

3 days ago

on

September 22, 2023

By

RESIZED Argus media

The growth of sustainable alternatives to traditional methanol production sources likely will shape the market over the next several years, industry leaders said this week at the Argus Methanol Forum.

20 September 

Driven by low-carbon policies and regulations, the transportation sector — especially the marine fuels industry — could be a source of heightened demand.

"The aim is to be net zero by 2050 but [those solutions are] expensive today and one of the main challenges to build e-methanol or bio-methanol plants is a huge queue for these pieces of equipment that aren't available," Anita Gajadhar, executive director for Swiss-based methanol producer Proman, said.

Bio-based and e-methanol plants of commercial scale, like Proman's natural gas-fed 1.9 million metric tonne/yr M5000 plant in Trinidad and Tobago, are not ready today.

"But that's not to say 10 years from now they won't be there," Gajadhar added.

Smaller projects are popping up. Dutch fuels and gas supplier OCI Global announced plans last week to double the green methanol capacity at its Beaumont, Texas, facility to 400,000 t/yr and will add e-methanol to production for the first time. Production will use feedstocks such as renewable natural gas (RNG), green hydrogen and biogas.

The globally oversupplied methanol market will not get any major supply additions starting in 2024 until 2027. But that oversupply will not last long, Gajadhar said.

Global demand has slowed this year, driven by stagnate economic growth and higher interest rates, according to industry observers.

As much as half of methanol demand is tied to GDP growth, with total methanol demand estimates at 88.9mn t globally in 2023. This is essentially flat from 2022, but up from 88.3m t in 2021 and 87.7mn t in 2020, Dave McCaskill, vice-president of methanol and derivatives for Argus Media's consulting service, said.

Demand is not expected to rebound to 2019 levels of 89.6mn t until 2024 or 2025, he added.

The period of oversupply combined with lackluster demand places methanol in a transition period, Gajadhar said, which opens the door for sustainable feedstock alternatives to shape market growth.

Danish container shipping giant Maersk and French marine logistics company CMA-CGM announced earlier this week a partnership to drive decarbonization in shipping. The partnership seeks to develop fuel and operations standards for bunkering with alternative fuels. The companies will develop net-zero solutions, including new technology and alternative fuels.

Maersk has previously ordered dual-fuel methanol-powered vessels and CMA-CGM LNG-propelled vessels.

The demand for alternative feedstock-derived fuels is there, but the ability to scale-up such production lags. Certified lower-carbon methanol produced using carbon capture and sequestration — also known as blue methanol— can ramp up much more quickly, according to Gajadhar.

By Steven McGinn

Photo credit and source: Argus Media
Published: 22 September, 2023

Continue Reading

Biofuel

Royal Caribbean completes over 12 weeks of bio bunker fuel testing in Europe

Firm expanded its biofuel testing this summer in Europe to two additional ships — Royal Caribbean International’s “Symphony of the Seas” and Celebrity Cruises’ “Celebrity Apex”.

Admin

Published

3 days ago

on

September 22, 2023

By

Royal Caribbean completes over 12 weeks of bio bunker fuel testing in Europe

Royal Caribbean Group on Tuesday (19 September) said it successfully completed over 12 consecutive weeks of biofuel testing in Europe. 

Royal Caribbean International’s Symphony of the Seas became the first ship in the maritime industry to successfully test and use a biofuel blend in Barcelona to meet part of her fuel needs. 

The company confirmed onboard technical systems met operational standards, without quality or safety concerns, demonstrating the biofuel blend is a reliable “drop in” supply of lower emission energy that ships can use to set sail across Europe and beyond. 

The tests across Europe also provided valuable data to understand the availability and scalability of biofuel in the region, the firm added. 

Jason Liberty, president and CEO, Royal Caribbean Group, said: “This is a pivotal moment for Royal Caribbean Group’s alternative fuel journey.”

“Following our successful trial of biofuels this summer, we are one step closer to bringing our vision for net-zero cruising to life. As we strive to protect and promote the vibrant oceans we sail, we are determined to accelerate innovation and improve how we deliver vacation experiences responsibly.”

President of the Port of Barcelona, Lluís Salvadó, said: “Royal Caribbean’s success is a clear example of how commitment to innovation makes possible the development of solutions to decarbonise the maritime sector.”

“In this case, it involves the cruise sector and focuses on biofuels, an area in which the Port of Barcelona is already working to become an energy hub, producing and supplying zero carbon fuels, such as green hydrogen and ammonia, and of other almost zero-carbon alternative fuels, such as methanol, biofuels or synthetic fuels. Innovation and collaboration between ports and shipping companies is key to accelerate the decarbonisation of maritime transport.”

The company began testing biofuels last year and expanded the trail this summer in Europe to two additional ships — Royal Caribbean International’s Symphony of the Seas and Celebrity Cruises’ Celebrity Apex. 

The sustainable biofuel blends tested were produced by purifying renewable raw materials like waste oils and fats and combining them with fuel oil to create an alternative fuel that is cleaner and more sustainable. The biofuel blends tested are accredited by International Sustainability and Carbon Certification (ISCC), a globally recognized organization that ensures sustainability of biofuels and verifies reductions of related emissions.

With Symphony of the Seas departing from the Port of Barcelona and Celebrity Apex departing from the Port of Rotterdam, both ships accomplished multiple sailings using biofuel and contributed critical data on the fuel’s capabilities. 

“These results will help accelerate Royal Caribbean Group’s plans to continue testing the use of different types of biofuels on upcoming European sailings this fall. The company is exploring strategic partnerships with suppliers and ports to ensure the availability of biofuel and infrastructures to advance the maritime energy transition,” the firm said. 

Photo credit: Royal Caribbean Group 
Published: 22 September, 2023

Continue Reading
Advertisement

OUR INDUSTRY PARTNERS



Trending