How to Store Biofuel? Tanks & Cisterns for Biodiesel, XTL, HVO, B100

Since biodiesel decomposes, its storage life is limited. It tends to oxidize over time. Furthermore, being highly hydrophilic (B100), condensation can stagnate, leading to bacterial growth, filtration problems, and fouling. Indeed, the risks associated with B30 and B100 increase with the FAME (Fatigue Aggregate Mass) content.

Storing this type of fuel requires specific conditions to ensure its stability, quality, and safety. Here are the main points to consider:

1. Choosing Your Tank or Cistern for Your Biofuel

Suitable Material: Use tanks made of stainless steel, high-density polyethylene (HDPE), or corrosion-resistant materials to prevent biofuels, such as biodiesel, from damaging the tank. Biofuel can also be stored in standard fuel tanks as long as the fuel remains dry.

Sealing: Tanks must be tightly sealed to prevent the entry of moisture and air, which could cause oxidation and degradation of both the biofuel and the tank.

2. Protection against moisture of B100, HVO & XTL

Biofuel, especially biodiesel, is hygroscopic (it absorbs water). Excess water can promote microbial growth and degrade the fuel. Use dehydration devices or filters to minimize moisture.

3. Avoid Exposure of Biodiesel to Air

Limiting contact with oxygen reduces the risk of oxidation, which can lead to deposit formation and fuel degradation. Controlled ventilation systems can be installed.

4. Storage Temperature

Store at moderate temperatures, ideally between 10 and 25°C. Avoid extreme temperatures, because:

• Low temperatures can cause crystallization or freezing, especially for biodiesel.

B100 becomes unusable at temperatures below -10°C.

High temperatures accelerate oxidation and degradation.

5. Regular Tank Maintenance for B100

Clean the tanks regularly to prevent the accumulation of sediment or contaminants.

Inspect the tanks for leaks or potential damage.

6. Protection from Light

Biofuel must be stored away from direct sunlight, as this can accelerate its degradation. Use opaque tanks or install the storage in a dark location.

7. Limited Storage Time

Biofuel has a shorter shelf life than fossil fuels. Ideally, use it within 3 to 6 months to guarantee its quality. For extended storage, add stabilizers.

 

8. Compliance with Safety Standards

B100 is not subject to ICPE regulations or ATEX standards (Explosive Atmospheres).

Comply with local and national regulations regarding fuel storage. This includes precautions against the risks of fire or leaks.

In summary, proper storage involves a clean, dry, temperature-controlled environment and well-maintained tanks to maximize the shelf life and quality of the biofuel.

 

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