What is Greasezilla?
Greasezilla℠ is a turnkey standalone system that separates and processes FOG waste. The system’s grease-separating process enables the operator to remove FOG from the grease trap waste stream, reduce waste disposal expenses, create new revenue and run a cleaner, greener, more eco-friendly operation. No additives, additional processing, blending, or fossil fuels required.
Greasezilla℠ operates without dewatering, leaves nothing to be landfilled, and has a total operating cost of 1-2 cents per gallon. The separation process produces a high-quality advanced biofuel making Greasezilla℠ the ideal front-end pretreatment system for FOG waste.
The Greasezilla℠ unit runs on brown grease; a small fraction of the brown grease produced in each batch is pumped back into the system and used as fuel.
Greasezilla℠ eases the financial sting of ever-increasing disposal fees, labor costs and transportation expenses associated with trips to further treatment and waste water plants. In addition, it creates new revenue streams by generating a high-quality brown grease salable commodity and through processing fees from other pumpers.
Greasezilla℠ also refines used cooking oil (UCO) into a premium, low-moisture yellow grease, ideal for biodiesel conversion processes.


The System and Separation Process
Greasezilla’s℠ design provides site agility, allowing the system to be placed near the source of FOG creation. A standard system includes dual 10,000-gallon, double-wall, insulated steel tanks. As one tank heats and separates inputs, the other can be harvested, drained and reloaded. Once ingested, Greasezilla’s chemical-free separation process begins to divide the FOG waste into layers.
Greasezilla generates three distinct layers:
- Brown Grease, approximately 5-10 percent of the finished process, is recycled into Brown Grease Advanced Biofuel. Five percent of the ABF returns to fuel Greasezilla®, and the remaining 95 percent can be used for other heat requirements at the plant or as a salable fuel substitute on the commodities exchange.
- Batter, making up 5-10 percent of volume, can serve as an excellent feedstock for anaerobic digesters. It can also be treated with traditional processes, composted or be processed with the effluent water.
- Residual pasteurized water, comprising approximately 80-85 percent of the material and nearly free of suspended solids, can be safely discharged to a wastewater treatment facility or used for irrigation in drought-impacted regions.



Greasezilla℠ offers a practical, cost-effective, ecological process that turns FOG disposal into a significant economic opportunity.
Simple
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Systems are available for interior or exterior placements
- Is easy to operate and maintain
- Is modular and designed to be expandable and scalable
Ecological
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Removes FOG from the waste stream
- Processes it into a biofuel, reducing greenhouse gas emissions
- Creates pasteurized, headworks-ready effluent water
- Creates instead of consuming resources
Efficient
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Uses hydronic fluid rather than steam for heat transfer, eliminating scaling
- Requires no flocculants, polymers or other costly additives
- Exhaust emissions have no detectable color or odor
- Burns a small fraction of the very fuel it produces
- Processes 8-10 million gallons per year
Cost- Effective
- Eliminates costs associated with dewatering, drying, lagooning, land applying, incinerating, composting.
- Significantly reduces post treatment hauling volume and costs
- Greasezilla owners capture disposal fees from area haulers
- Generates revenue through the sale of the biofuel offtake