Biodiesel Oil Collection and Storage Tanks
1. Stainless Steel
One of the most popular materials for biodiesel storage, stainless steel is known for its corrosion resistance, strength, and longevity.
Advantages: Resists the corrosive effects of biodiesel and its feedstock. It’s also easy to clean, which reduces contamination risks.
2. Carbon Steel
While less resistant to corrosion compared to stainless steel, carbon steel tanks can still be used for biodiesel storage if they are properly lined or coated.
Advantages: Cost-effective and durable. With the right coatings or treatments, it can be an effective material for biodiesel storage.
3. Polyethylene (PE) and Polypropylene (PP)
These are types of high-density plastic materials that are sometimes used, especially for smaller, mobile, or temporary storage solutions.
Advantages: They are lightweight, resistant to corrosion, and can be suitable for biodiesel made from certain feedstocks. However, they may not be ideal for long-term storage of biodiesel due to concerns about permeability and material compatibility over time.
4. Fiberglass Reinforced Plastic (FRP)
Made by combining resin with fiberglass, FRP tanks offer robustness and corrosion resistance.
Advantages: Highly durable and resistant to the corrosive nature of some biodiesel feedstocks. FRP tanks also offer flexibility in terms of shapes and sizes.
- Internal Linings and Coatings: For tanks made of materials that might corrode over time, internal linings or coatings can be applied. This extends the tank’s life and ensures the purity of the biodiesel.
- Secondary Containment: Irrespective of the primary tank material, many storage setups include a secondary containment system (like a bund) to contain any spills or leaks, protecting the environment.
- Connections and Fittings: Any connections, valves, or fittings should also be made of materials compatible with biodiesel to prevent leaks and maintain the integrity of the stored fuel.
When choosing a material for biodiesel oil collection and storage tanks, consider factors like the specific feedstock used, the intended duration of storage, and the local climate conditions. Proper maintenance and inspection routines further ensure the longevity and safety of the storage system.