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Research: Floating ‘artificial leaves’ could potentially generate clean marine fuel

This is the first time that clean fuel has been generated on water and if scaled up, the artificial leaves could be used on polluted waterways, in ports or at sea.

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Researchers have developed floating ‘artificial leaves’ that generate clean fuels from sunlight and water, and could potentially help reduce the global shipping industry’s reliance on fossil fuels, according to the University of Cambridge on (Wednesday) 17 August. 

The researchers, from the University of Cambridge, designed ultra-thin, flexible devices, which take their inspiration from photosynthesis – the process by which plants convert sunlight into food. Since the low-cost, autonomous devices are light enough to float, they could be used to generate a sustainable alternative to petrol without taking up space on land.

Outdoor tests of the lightweight leaves on the River Cam – near iconic Cambridge sites including the Bridge of Sighs, the Wren Library and King’s College Chapel – showed that they can convert sunlight into fuels as efficiently as plant leaves.

This is the first time that clean fuel has been generated on water, and if scaled up, the artificial leaves could be used on polluted waterways, in ports or even at sea, and could help reduce the global shipping industry’s reliance on fossil fuels. The results are reported in the journal Nature.

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While renewable energy technologies, such as wind and solar, have become significantly cheaper and more available in recent years, for industries such as shipping, decarbonisation is a much taller order. 

Around 80% of global trade is transported by cargo vessels powered by fossil fuels, yet the sector has received remarkably little attention in discussions around the climate crisis.

For several years, Professor Erwin Reisner’s research group in Cambridge has been working to address this problem by developing sustainable solutions to petrol which are based on the principles of photosynthesis. In 2019, they developed an artificial leaf, which makes syngas – a key intermediate in the production of many chemicals and pharmaceuticals – from sunlight, carbon dioxide and water.

The earlier prototype generated fuel by combining two light absorbers with suitable catalysts. However, it incorporated thick glass substrates and moisture-protective coatings, which made the device bulky.

“Artificial leaves could substantially lower the cost of sustainable fuel production, but since they’re both heavy and fragile, they’re difficult to produce at scale and transport,” said Dr Virgil Andrei from Cambridge’s Yusuf Hamied Department of Chemistry, the paper’s co-lead author.

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“We wanted to see how far we can trim down the materials these devices use, while not affecting their performance,” said Reisner, who led the research. “If we can trim the materials down far enough that they’re light enough to float, then it opens up whole new ways that these artificial leaves could be used.”

For the new version of the artificial leaf, the researchers took their inspiration from the electronics industry, where miniaturisation techniques have led to the creation of smartphones and flexible displays, revolutionising the field.

Note: The full article on the research can be found here

 

Photo credit: University of Cambridge
Published: 26 August, 2022

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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.

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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

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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.

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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

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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”.

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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

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