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Alternative Fuels

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.




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.”


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


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.


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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Singapore: EPS orders ammonia, LNG dual-fuel vessels from China

EPS signed one contract for a series of ammonia dual-fuel bulk carriers with CSSC Beihai Shipbuilding and another for a series of LNG dual-fuel oil tankers with CSSC Guangzhou Shipbuilding International.






Singapore-based Eastern Pacific Shipping (EPS) on Wednesday (28 February) said it signed two new contract orders in a signing ceremony in Shanghai, one for a series of ammonia dual-fuel bulk carriers with CSSC Beihai Shipbuilding and another for a series of LNG dual-fuel oil tankers with CSSC Guangzhou Shipbuilding International. 

The contracts signed cover four 210,000 dwt ammonia dual-fuel bulk carriers and two 111,000 dwt LNG dual-fuel LR2 oil tankers, expanding our fleet of green vessels on water. 

“These are pivotal for EPS, testament to our continued commitment towards the decarbonisation of shipping,” EPS said in a social media post.

Manifold Times recently reported EPS signing a contract for its first ever wind-assisted propulsion system, partnering with bound4blue to install three 22-metre eSAILs® onboard the Pacific Sentinel

The turnkey ‘suction sail’ technology, which drags air across an aerodynamic surface to generate exceptional propulsive efficiency, will be fitted later this year, helping the 183-metre, 50,000 DWT oil and chemical tanker reduce overall energy consumption by approximately 10%, depending on vessel routing.

Related: Singapore: EPS orders its first wind-assisted propulsion system for tanker


Photo credit: Eastern Pacific Shipping
Published: 1 March 2024

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LNG Bunkering

Malaysia: Port of Tanjung Pelepas completes first LNG bunkering operation

Landmark event involved the CMA CGM Monaco, a 14,024 TEUs containership operated by French shipping giant CMA CGM.






Port of Tanjung Pelepas Sdn Bhd (PTP), a joint venture between MMC Group and APM Terminals, on Wednesday (28 February) announced a significant milestone with the successful completion of its first Liquefied Natural Gas (LNG) bunkering operation. 

The landmark event involved the CMA CGM Monaco, a 14,024 TEUs (Twenty-foot Equivalent Units) capacity containership operated by French shipping giant, CMA CGM.

Tan Sri Che Khalib Mohamad Noh, Chairman of PTP in a statement remarked this latest milestone demonstrates PTP’s commitment to continuously enhance its competitive advantages in an increasingly competitive global market.

“The successful completion of our first LNG bunkering operation also underscores our unwavering commitment to sustainability and environmental leadership. We are proud to partner with Petronas Trading Corporation Sendirian Berhad (PETCO) and CMA CGM on this initiative and showcase PTP’s capabilities as a leading facilitator of clean and efficient maritime operations.”

“This milestone paves the way for further growth in LNG bunkering at PTP, contributing significantly to the decarbonisation of the maritime industry.”

Commenting on this achievement, Mark Hardiman, Chief Executive Officer of PTP stated this latest milestone further highlights PTP’s position as the largest transshipment hub terminal in Malaysia.

“In preparation for the LNG bunkering operation, PTP worked closely since March 2022 with PETCO and CMA CGM, as well as with various other related government agencies to organise table-top exercises (TTX) and workshops, before carrying out the deployment exercise.”

“The success of the bunkering operation is a result of the seamless collaboration and preparations involving rigorous safety procedures through in-depth operational and risk assessments, modelling, and validation. We thank PETCO, CMA CGM all other involved parties for their joint efforts in operationalising the bunkering capability and we welcome partners to work with us to accelerate maritime decarbonisation,” said Hardiman.

Port of Tanjung Pelepas (PTP) is Malaysia’s largest transshipment hub with the capacity to handle 13 million TEUs annually. The port delivers reliable, efficient, and advanced services to major shipping lines and box operators, providing shippers in Malaysia and abroad with extensive connectivity to the global market. PTP is currently ranked 15th among the world top container ports.


Photo credit: Port of Tanjung Pelepas
Published: 1 March 2024

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Alternative Fuels

Wallenius Wilhelmsen to order four additional methanol DF PCTCs

Newbuilds will also be ammonia-ready and able to be converted as soon as ammonia becomes available in a safe and secure way.





Wallenius Wilhelmsen PCTC order

Roll-on/roll-off (Ro-Ro) shipping company Wallenius Wilhelmsen on Tuesday (27 February) declared options to build four additional next-generation Shaper Class pure car and truck carrier (PCTC) vessels.

The 9,300 CEU methanol dual fuel vessels can utilise alternative fuel sources, such as methanol, upon delivery. They will also be ammonia-ready and able to be converted as soon as ammonia becomes available in a safe and secure way.

“Together with our customers we are committed to further shaping our industry and accelerating towards net zero. These new vessels are a vital part of that journey,” says Xavier Leroi, EVP & COO Shipping Services.

This latest commitment brings the total number of Shaper Class vessels currently on order with Jinling Shipyard (Jiangsu) to eight. Wallenius Wilhelmsen also retains further options.

The first of the Shaper Class vessels already ordered are expected to be delivered in the second half of 2026. The four additional vessels under the declared options will be delivered between May and November 2027.


Photo credit: Wallenius Wilhelmsen
Published: 1 March 2024

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