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Test results of independent laboratories confirm positive impact of Aderco 2055G on biofuel bunker fuel storage

‘There are different types of biofuels, each with its own set of benefits and drawbacks in terms of stability, acidity and microbial growth,’ Philippe Lecloux, Aderco Group Head of Marine, tells Manifold Times.

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Philippe Lecloux

Aderco, a fuel treatment technology specialist with roots originating from the maritime industry, has completed tests of its Aderco 2055G additive on biofuels with several independent laboratories, learns Singapore bunkering publication Manifold Times.

“One of the ways to comply with the International Maritime Organization (IMO)’s regulation for greenhouse gas (GHG) reduction is through the use of biofuel or biofuel blends as a marine fuel,” says Philippe Lecloux, Aderco Group Head of Marine.

“There are different types of biofuels, each with its own set of benefits and drawbacks in terms of stability, acidity and microbial growth.”

OXIDATIVE STABILITY

Properties of biofuel may have an impact on the materials used and how they are stored, according to Lecloux.

The higher acid levels in biofuels have a greater potential to induce corrosion in fuel supply systems if allowed to oxidise.

Biodiesel, in particular, is more sensitive to oxidative breakdown than VLSFO due to its higher organic chemical content.

He notes Aderco 2055G having the ability to delay the appearance of volatile by-products and hence, increase the time period before biofuel starts to oxidise.

Under laboratory studies, Aderco 2055G was dosed in three palm-based biofuels with varying levels of blend percentage. In all three samples, oxidation delay increased with the use of the additive. (Results below)

Oxidation Stability

In a second test, three B100 fuels were tested for rancimat. In the case of B100 Biofuga and B100 Verbio, the induction time of biodiesel almost double in the presence of 2055G. (Results below)

Rancimat Test EN14112

ACIDITY DUE TO OXIDISATION

Once oxidative elements are present in biofuel, the fuel blend starts to become acidic which can increase in intensity if the fuel is left untreated – leading to corrosion in the storage tank and damage to the fuel system, informs Lecloux.

“In advanced stages, this could lead to increased fuel acidity, which could result in corrosion in the fuel system and accumulation of deposits in pumps and injectors,” he shares.

“Some types of hoses and gaskets could degrade, leading to loss of integrity and interaction with some metallic material such as copper, brass, and lead among others.”

Acidity due to

In general, test results (above) showed the pH of all three samples decreasing slightly with the water content remaining stable during the test period of 31 days.

Results further showed Aderco 2055G decreasing the acidity of biodiesel+ 2% water mixture; this is due to the basicity of Aderco 2055G which negates the acidity developed in the fuel.

MICROBIAL GROWTH

Tests from independent laboratories also showed Aderco 2055G being an effective inhibitor against microbial development, states Lecloux.

“Bacteria and mould can form in biodiesel fuel when being exposed to condensed water [found within storage tanks] and microbial proliferation results in excessive sludge development, blocked filters, and clogged pipes,” he notes.

Microbial Growth

Analysis measuring Colony Forming Units (UFCs) showed the effectiveness of Aderco 2055G in inhibiting the development of the colonies. In summary, studies (above) showed:

  • Microbial growth in biodiesel with 2% water (without Aderco 2055G) doubles after 6 days of test.
  • Addition of Aderco 2055G to biodiesel with 2% water prevented the growth of bacteria all through 31 days.

“Aderco 2055G forms a selectively permeable barrier between water and fuel and only allows water to pass through and settle at the bottom of the tank,” explains Lecloux.

“The creation of the barrier prevents microbes and bacteria from reaching and contaminating the fuel. Careful and regular draining of water facilitates the removal of these organisms.”

Note: All tests were conducted by independent laboratories with guidance from Aderco. Complete test documentation and case studies can be requested from Aderco’s Technical Department ([email protected]).

About Philippe Lecloux

Philippe Lecloux, Aderco Group Head of Marine, began his career at sea in 1984 and served 17 years as Chief Engineer on board complex oil and chemical carriers owned, operated and managed by blue-chip European players. He is a graduate of the Antwerp Marine Academy (Belgium).

Philippe also gained shore-based experience as Technical Manager, supervising a fleet of ice-class chemical tankers.

He later moved to Singapore as Technical Director where he developed and successfully headed a new ship management division and various other projects. In 2013, the prestigious Lloyd’s List Asia Awards rewarded his team in the Training category.

Since January 2017, Philippe has been spearheading the Aderco Group’s development in the dynamic Asia/Pacific/Oceania markets.

Photo credit: Aderco
Published: 13 October, 2022

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Alternative Fuels

Yang Ming orders six LNG dual-fuel, ammonia-ready containerships from Hanwha Ocean

Each of the six new vessels will have a capacity of up to 13,650 TEU and feature LNG dual-fuel propulsion and Ammonia Fuel Ready specifications.

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Yang Ming orders six LNG dual-fuel, ammonia-ready containerships from Hanwha Ocean

Taiwanese shipping firm Yang Ming Marine Transport Corporation (Yang Ming) and South Korean shipbuilder Hanwha Ocean on Wednesday (2 September) signed a shipbuilding contract for six 13,000 TEU class LNG dual-fuel container vessels. 

The contract was signed by Dr. Chuck Tsai, Chairman of Yang Ming, and Mr. Charles Kim, CEO of Hanwha Ocean. The vessels are scheduled for delivery between 2028 and 2029. 

They will complement Yang Ming’s existing fleet of 10,000+ TEU vessels and serve as key vessels on East-West services, with deployment flexibility across trade lanes connecting Asia with the East and West Coasts of North America, South America, and the Mediterranean. 

Each of the six new vessels will have a capacity of up to 13,650 TEU and feature LNG dual-fuel propulsion and Ammonia Fuel Ready specifications.

“As Yang Ming transitions toward net-zero emissions, LNG provides a relatively mature and economically viable alternative fuel solution, capable of reducing greenhouse gas emissions by approximately 20%,” the company said. 

“At the same time, ammonia can serve as a carbon-free fuel by utilising converted LNG storage facilities, while offering relatively lower conversion costs and comparatively well-developed supply chains and infrastructure. The Ammonia Fuel Ready design will therefore provide Yang Ming with greater flexibility in responding to increasingly stringent international regulations on greenhouse gas emissions.”

In addition, the vessels will be equipped with Type B LNG fuel tanks with a design pressure of 1.0 bar to enhance the safety and efficiency of LNG operations, together with a range of energy-saving technologies, including Wind Shields, Rudder Bulbs, Pre-Swirl Stators, and Shore Power Systems. Smart ship technologies and cybersecurity protection features will also be incorporated to enhance operational efficiency, safety, and reliability while effectively reducing fuel consumption and greenhouse gas emissions.

Deliveries under Yang Ming’s next-generation fleet optimization plan commenced earlier this year. By 2030, a total of 24 new vessels are expected to enter service. 

This includes 18 LNG dual-fuel vessels—comprising five 15,500 TEU, seven 16,000 TEU, and the six 13,000 TEU vessels under this contract—alongside six 8,000 TEU methanol dual-fuel-ready ships. 

 

Photo credit: Yang Ming Marine Transport
Published: 4 September, 2026

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Alternative Fuels

LR, China’s MARIC unveil tanker concept ready for three future bunker fuels

Both secured AiP for a new 114,000 DWT product and crude oil tanker designed to accommodate future conversion to LNG, methanol or ammonia.

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LR, China’s MARIC unveil tanker concept ready for three future bunker fuels

Lloyd’s Register (LR) and the Marine Design and Research Institute of China (MARIC) on Thursday (3 September) have secured Approval in Principle (AiP) for a new 114,000 DWT product and crude oil tanker designed to accommodate future conversion to LNG, methanol or ammonia.

Announced at SMM 2026, the concept addresses one of the biggest investment challenges facing shipping today: the need to develop vessels and capabilities that can support a range of alternative fuel options and pathways as technologies, infrastructure and regulations evolve.

While LNG is already a mature fuel pathway, methanol and ammonia remain at an earlier stage of development, with questions around global fuel availability, infrastructure development, economics and long-term adoption.

The 114,000 DWT tanker concept has been designed as a product and crude oil carrier that can accommodate future conversion to LNG, methanol or ammonia as technologies, regulations and fuel supply chains mature. By incorporating conversion readiness at the design stage, the concept aims to reduce future retrofit complexity and provide owners with greater confidence when planning long-term fleet investments.

The design concept was reviewed against LR’s July 2026 class rules and regulations, including requirements relating to ships using gases and other low-flashpoint fuels, alongside relevant IACS Common Structural Rules for oil tankers. Final classification and statutory approval remain subject to full compliance with all applicable rules and regulations.

Theo Kourmpelis, Global Business Director for Tankers, Lloyd’s Register, said: “Shipowners are being asked to make major investment decisions today despite continued uncertainty around which fuels will dominate in the decades ahead. Alternative fuel solutions each offer potential pathways to compliance, but fuel infrastructure, regulation and economics continue to evolve at different speeds around the world.

“Designs that preserve flexibility will be critical in helping owners manage risk while preparing for multiple future scenarios.”

Si Nan, Marine & Offshore Marketing Department Vice Director, MARIC, said: “As the industry explores different decarbonisation pathways, shipowners need vessel designs that can adapt alongside technological and regulatory developments. This concept was developed specifically to provide greater fuel flexibility and long-term resilience, allowing owners to respond to changing market requirements without being locked into a single fuel strategy.

“Receiving Approval in Principle from Lloyd’s Register is an important milestone that validates the design concept and supports its future development.”

 

Photo credit: Lloyd’s Register
Published: 4 September, 2026

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Alternative Fuels

DNV: Alternative-fuelled vessel orders hit highest monthly level since October 2024

LNG-fuelled vessels accounted for the vast majority of August activity while the strong summer performance marked a significant acceleration in ordering activity after a relatively slow start to the year.

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DNV: Alternative-fuelled vessel orders hit highest monthly level since October 2024

Latest data from classification society DNV’s Alternative Fuels Insight (AFI) platform alternative-fuelled vessel ordering was strong in August, with 52 new vessels added to the platform.

This is the highest monthly total since October 2024 and follows another active month in July, when 47 vessels were added to the database.

LNG-fuelled vessels accounted for the vast majority of August activity, with 46 orders recorded. The container segment led the way with 30 orders, while the car carrier segment contributed a further 12 LNG-fuelled vessels. In addition, four ethanol-fuelled bulk carriers and two hydrogen-powered bulk carriers were added during the month, as well as one LNG bunker vessel.

The strong summer performance marked a significant acceleration in ordering activity after a relatively slow start to the year. In total, 242 alternative-fuelled vessel orders have been placed in the first eight months of 2026, representing a 27% increase compared with the same period in 2025.

LNG remains the dominant fuel choice, accounting for 63% of all alternative-fuelled vessel orders registered so far this year. Container vessels represent the largest share of these LNG orders (59%), followed by car carriers (30%).

Jason Stefanatos, Global Decarbonization Director at DNV Maritime, said: “The past two months have been particularly strong for alternative-fuelled vessel ordering, with August recording the highest monthly total we’ve seen since October 2024. This has helped lift year-to-date orders to a level well above the same period last year.

“LNG remains the leading fuel choice, driven largely by activity in the container and car carrier segments. These sectors have been among the earliest adopters of alternative fuels, supported by predictable liner operations and increasing demand from cargo owners to reduce emissions across supply chains. 

“For many owners, LNG offers a combination of emissions reductions, fuel availability and future flexibility while the longer-term fuel landscape continues to evolve. 

“At the same time, the latest figures include orders for ethanol- and hydrogen-fuelled vessels, highlighting that owners continue to explore a range of decarbonization pathways. Different segments are making different fuel choices, but the overall level of activity demonstrates continued investment in lower-emission shipping.”

Screenshot 2026 09 04 at 12.29.26 PM Screenshot 2026 09 04 at 12.29.36 PM

 

Photo credit: DNV
Published: 4 September, 2026

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