Nippon Yuka Kogyo (Nippon Yuka), an NYK Group company specialising in chemical R&D as well as the manufacture and sale of chemical products, on Wednesday (21 May) announced the upcoming release of BioxiGuard, the Japan’s first antioxidant specially developed for marine biodiesel, from 10 August.

NYK said compared with conventional petroleum-based fuels, biofuel contains a higher proportion of unsaturated fatty acids, making it more susceptible to oxidative degradation. Once oxidised, the biofuel can produce acidic substances and sludge, adversely affecting vessel fuel efficiency by reducing the fuel’s calorific value.

Developed by Nippon Yuka based on property analyses of the biofuel used in NYK-operated vessels, BioxiGuard is specifically formulated to enhance the oxidation stability of biodiesel. When added to biofuel, BioxiGuard slows the progression of oxidative degradation and helps deter issues such as metal corrosion, strainer blockage, and cleaning-system fouling often triggered by oxidised fuel.

According to laboratory tests conducted by Nippon Yuka researchers, the addition of BioxiGuard at a concentration of 1 part per 500 resulted in an approximate 50% reduction in the rate of biofuel degradation compared to untreated biofuel. 

This significant improvement underscores the potential for vessel operators to not only extend the useful life of biofuel on board but also maintain more stable and cost-effective vessel operations.

Photo credit: NYK
Published: 22 May, 2025

United European Car Carriers (UECC) on Monday (19 May) said bunkering liquefied biomethane (LBM), also known as bio-LNG, will give it a significant compliance surplus under FuelEU that can be monetised through the regulation’s pooling mechanism.

UECC’s Senior Manager of Business Planning & Sustainability, Masanori Nagashima, said bio-LNG is now seen by the company as the key fuel to achieve its target of a 45% reduction in carbon intensity by 2030 versus a 2014 baseline and net zero by 2040 – ahead of the 2050 deadline set by both the IMO and EU.

The marine fuel is being bunkered on UECC’s dual and multi-fuel LNG PCTCs – three of which have battery hybrid capability – under Sail for Change that was launched by UECC last year and currently has participation by automotive giants including Toyota, Ford and JLR. 

The company also has on order two multi-fuel LNG battery hybrid newbuild PCTCs due for delivery in 2028 that could be enlisted into the programme. 

The overall carbon intensity of the UECC fleet, using the same gCO2e/MJ (grams of CO2 equivalent per megajoule) metric as FuelEU, is calculated at 68 gCO2e/MJ to achieve an interim target of a 25% carbon intensity reduction in 2025, though the company is expected to achieve 57 gCO2e/MJ this year based on its supply plan, according to Nagashima.

This is significantly below the current FuelEU threshold of 89.3 gCO2e/MJ – a 2% reduction from the baseline of 91.16 gCO2e/MJ – and still lower than the threshold of 77.9 gCO2e/MJ from 2035 that is a 14.5% reduction versus the baseline figure.

“The low carbon intensity of our fleet means all of our vessels are expected to gain a C rating or above with the IMO’s Carbon Intensity Indicator (CII)” Nagashima explained.

“It also gives us a significant compliance surplus under FuelEU that can be monetised through the regulation’s pooling mechanism, allowing a great commercial opportunity to offset regulatory costs for customers and eliminate FuelEU surcharges.”

“UECC will continue to accelerate its progress in improving decarbonisation of its fleet by further optimising our fuel mix strategy going forward to incorporate more high-impact fuels as these become viable.”

Photo credit: Titan Clean Fuels
Published: 22 May, 2025

Hong Kong-based ship manager Wallem Group on Tuesday (20 May) published a new whitepaper to ensure ships, ships systems and crews are fully prepared to load, store and use biofuels in everyday vessel operations.

The company said ‘Marine Biofuels: Adoption, use and best practice’ offers a comprehensive guidance on the precautions owners and crew need to consider before and during use.

With a lower calorific value than fossil fuels, biofuels present adoption challenges that require close attention from procurement, technical and vessel operating personnel, noted Abhijit Ghosh, Head of Maritime Technology and Innovation, Ship Management, Wallem Group.

The whitepaper examined the regulatory landscape surrounding marine biofuels, but also the specifics of IMO compliance, and the transparency needed to use fuels that vary batch to batch. It explains how these blends of Fatty Acid Methyl Ester (FAME) and residual or distillate fuels impact storage tanks, fuel systems, machinery, and crew training, also reflecting on the need for additional insurance cover.

Based on experience, Wallem has particular recommendations for owners on the assurances they need from equipment suppliers before introducing biofuels. It also explores the consequences for biofuel users of improper blending, acidity, biodegradation and microbial growth, fouling, waxing and clogging.

The publication provides best practice recommendations for testing, materials selection, segregation, temperature control, tank cleaning and fuel line flushing. 

For long-term biofuel use, Wallem recommended that engines be retrofitted with hardened fuel pumps and corrosion-resistant coatings.

The whitepaper also considered crew training gaps and offered recommendations for monitoring, measuring, and checking biofuel use to ensure that personnel, systems, and the ship remain safe.

“The combination of a centralised digital system for real-time tracking and analysis of biofuel consumption and a skilled and well-trained crew can be transformative for enabling the future-ready maritime fleet”, said Ghosh.

Note: The whitepaper ‘Marine Biofuels: Adoption, use and best practice’ can be downloaded here. 

Photo credit: Chris Pagan on Unsplash
Published: 21 May, 2025