Waste to Energy Technology

The main product purpose of the GrahamTek Waste-to-Energy technology is to provide energy in the form of oil or gas, with high quality byproducts of carbon char, scrap metal & glass. 

Feedstock includes hydrocarbon waste recycling, tyre recycling, waste oil recycling, oil refinery cutter stock, e-waste recycling, municipal solid waste recycling and medical waste recycling.

This treatment process of waste into usable products reduces the reliance on fossil fuels and natural resources and at the same time reduces the impact of un-degradable waste that is harmful to the environment.

The Process

  • The technology uses a patented process of thermal mechanical cracking where the long carbon chains in the carbon waste are divided into smaller carbon chains, which changes the physical attributes of the waste. 
  • Carbon containing general waste is inserted into a reactor chamber and is decomposed under heat creating a vapour in the absence of oxygen and any chemical catalysts. There is no combustion or incineration of the waste. The vapour is condensed where the carbon chain is “cracked” through a mechanical process that is part of the uniqueness of the technology and a significant part of the Intellectual Property that resides in this technology.
  • The vapour forms a synthetic gas or SYNGAS that is converted into Light Fuel Oil (LFO) and Heavy Fuel Oil (HFO) as it passes through the Thermal Cracking Units (TCU). Byproducts include LFO, Marine Diesel Oil (MDO) and Marine Gas Oil (MGO).
  • The technology is a closed loop system designed for zero emissions throughout the process with a series of scrubbers and condensers ensuring no hazardous gases, ash or other hazardous materials are released from the system.


A 5 year development cycle and 12 months of trial production was completed with the current status as follows:

  • A fully closed loop design with no environmental impact. Current EIA to test against EU emission standards.
  • A fully commissioned CAPEX of ±US$ 0.05 per litre produced 
  • No chemical cleaning requirements & long service intervals.
  • No chemical catalyst required for carbon link separation and its GTL (Gas to Liquid) process, reducing production cost to less than US$ 0.08 per litre (excluding feedstock).
  • An operating footprint of ±1,000 m².
  • A design with consistent results over multiple waste streams and waste stream blends such as Tyres, e-Waste, Medical Waste and general household waste.
  • Use of the equipment reduces Landfill Airspace by 97% resulting in increased life of existing landfill sites for Waste Management companies.
  • Produces consistently high quality Refuse Derived Fuels (RDF) such as Furnace Oils and Diesel from multiple hydrocarbon waste streams, on European RDF Standard.

The Plant

  • The Plant has a minimal processing footprint of 500 m² under roof and a further 500 m² to sort and process the incoming waste and the residue waste from the process, making the footprint a total of 1,000 m² of operating space.
  • The plant can recycle up to 20 tonnes of waste per day or 400 tonnes per month, which produces on average 200,000 litres of oil and 100 tonnes of carbon black per month. The plant is modular and scalable and can be configured for higher processing volumes.
  • The plant has several built-in safety features including fire prevention, pressure and flow rate monitoring, as well as mechanical emergency stoppage. In addition the plant functions completely off-grid and has been designed to feed power back into the grid. 
  • There is minimal noise pollution; the noise emanating from the plant is mostly from a 4kw motor for power generation on site. The generator removes the reliance on external power and is an additional safety feature. Additional safety is provided through the global 24x7 remote management of the system by GrahamTek operations in Cape Town, South Africa.

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