Fuel treatment services for off-spec fuel recovery

Professional fuel treatment for off-spec fuel cargo

AQ MarTest provides specialized fuel treatment services for contaminated and off-spec fuel cargo across terminals, refineries and marine operations worldwide. Our mobile filtration systems restore product quality directly on-site, reducing delays, preventing disposal and minimizing operational losses.

Fuel treatment is essential when products no longer meet required specifications due to contamination, water ingress, oxidation, particulate presence or failed cleanliness standards. Instead of replacing or disposing of the product, AQ MarTest restores fuel safely and efficiently through certified filtration technologies.

This approach protects cargo value while ensuring continuity in industrial operations.

Fuel products treated by AQ MarTest

Our fuel treatment services are routinely applied to:

  • diesel
  • biodiesel
  • gasoil
  • marine fuel
  • jet fuel
  • aviation fuel
  • gasoline blending components

Each product requires a specific treatment approach depending on contamination profile and required end specification.

Dedicated EI-approved Jet-A1 filtration units are available for aviation fuel applications where strict compliance is critical.

Common fuel contamination problems

Fuel quality can be affected during transport, storage or transfer. Common contamination issues include:

  • free water
  • emulsified water
  • particulate contamination
  • microbiological contamination
  • dissolved iron
  • chlorides
  • sulphur components
  • gum formation
  • oxidation products
  • vegetable oil contamination
  • hydraulic oil contamination

These contaminants can affect flash point, appearance, odor, ISO cleanliness and overall fuel stability.

Rapid fuel treatment helps prevent further degradation and protects downstream operations.

Fuel treatment technologies

AQ MarTest applies several filtration technologies depending on the type of contamination.

Mechanical Fuel Filtration

Mechanical filtration removes visible and microscopic particles from fuel systems and storage tanks. Our high-capacity systems operate with filtration down to 0.5 microns and can reach ISO cleanliness levels below 15-12-9.

Coalescing Fuel Treatment

Coalescing filtration removes emulsified water droplets from sensitive fuel products, particularly aviation fuels and diesel applications where water content must remain strictly controlled.

Chemical Fuel Treatment

Chemical filtration removes dissolved contaminants such as chlorides, peroxides, dissolved iron and oxidation by-products using specialized adsorbent media.

This process supports both fuel polishing and specification recovery.

In-tank fuel recovery

AQ MarTest often performs in-tank recirculation during fuel treatment projects. This allows contaminated fuel to be treated inside the existing tank without unnecessary transfer or transport.

This method reduces product losses to typically below 0.1%, lowers handling risks and significantly improves operational efficiency.

For large-volume fuel inventories, this is often the most cost-effective treatment solution available.

Certified fuel treatment worldwide

All fuel treatment operations are executed under ISO 9001, ISO 14001, ISO 45001 and VCA-P certified systems. This ensures safe handling, environmental responsibility and full compliance with industrial and marine fuel standards.

With more than 15 million metric tons of treated off-spec product worldwide, AQ MarTest delivers proven expertise in fuel treatment and filtration services.

When fuel quality is compromised, fast intervention is critical. Certified fuel treatment restores product value and protects supply chain continuity.

Discuss your inquiry

Tell us about your vapor treatment, degassing or nitrogen service needs and we’ll get back to you promptly with a detailed overview of the solutions we can offer.

Discuss your inquiry

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FAQ

What is fuel treatment?
Fuel treatment is the process of removing contamination from off-spec fuels such as diesel, gasoil, jet fuel and biodiesel to restore the product to required specification.
AQ MarTest removes water, particulates, chlorides, dissolved iron, microbiological contamination, oxidation products, gum, sulphur compounds and other contaminants affecting fuel quality.
Yes. AQ MarTest frequently performs in-tank recirculation, allowing fuel treatment directly inside the storage tank with minimal product loss.