Bio-Fuel Conversion from Recycled Food Waste Installations

leaders in waste separation technology & renewable clean bio-energy

Donasonic designs, manufactures and installs materials recycling installations (specifically for organic & food waste) to process matter that results in sanitised (clean) Bio-Mass or Bio-Fuel for use in further processes as saleable clean raw materials.


Is a mixture of different gases that are produced by decomposing organic matter that has been collected from recycling processes.  Bio gas is produced produced through anaerobic digestion using anaerobic organisms, which breakdown the organic matter in fermentation  tanks. These tanks block out natural light and oxygen which are harmful to the breackdown process. To be able to sensibly and efficiently use bio gas, the process has to be controlled in a bio gas plant.

Bio gas primarily consists of Methane (CH4), ar 50-75% ,and Carbon Dioxide (CO2), at 25-50%. The Methane (CH4) content in particular is an importnat factor of the bio gas because the higher the Methane (CH4) content the higher the energy yield the bio gas will contain.


  • Organic waste (from the recycling process) is fed into the biogas plant as feedstock
  • The fermenter tank is heated to approx. 38-40°C , the input material is decomposed by the micro-organisms without any light or oxygen. The final product of the fermentation process is bio gas with Methane (CH4) as the main ingredient
  • Once the recycled organice waste has been fermented, the residue that is left behind is transported to storage tanks where it can be retrieved for further usage
  • The residue left behind from the fermentation process, can be utilised as high quality fertiliser. The advantage of using this kind of fertiliser is that it has a lower viscosity and will penetrate the ground quicker than traditional fertiliser, it also has a higher nutrient content and a less intense aroma
  • Drying it for use as dry fertiliser is a possible option
  • The bio gas that is produced is stored directly above the fermenting biomass at the top of the fermentation tank. From here it is drawn through pipework at the Combined Heat and Power plant (CHP) where the bio gas is used as fuel to generate heat and electricity
  • The electrical power generated is split between powering the bio gas plant and the rest is sold to the local power grid.
  • The heat generated can be used for the on site heating system and to further the production of producing bio gas.
  • The bio gas can also be used to supply the nation gas supply grid and can be turned into biofuels for automobiles and sent to filling stations.


For the production of bio gas, a multitude of organic substances can be used. There are considerations that have to be made when deciding to use certain organic substances, these have to be based on individual circumstances. But the bio gas yield for each different organic substance will alter the efficiency of the bio gas plant have to be taken into consideration. Input Materials that are used successfully in Bio gas plants:


  • Wastes of plant origin:- contents from organic landfill waste
  • Wastes of animal origin: fats, animal blood, gastro-intestinal contents, slaughter waste


  • Farm manure:- cattle manure, poultry droppings, dung
  • Renewable resources:- corn, whole crop silage, grass, grains, beets
  • Agriculture by products:- beet leafs, harvest resuides

We use our design and application technologies expertise to plan and implement exact specifications for your recycle plant requirements and ongoing needs.

With a full range of equipment choices we are able to develop a plant for you that will deliver precise throughputs and long term ROI and continued green solutions.

Additionally our waste recycling plants compliment our bio-energy plants perfectly and fulfil corporate and social responsibilities ensuring that new technology is utilised for sustainable future solutions.


Bio gas is a real allrounder and with a multitude of utilisation options, it is the only renewable energy resource that can be flexibly utilised.

Electricity: is generated throught the incineration of bio gas at the Combined Heant and Power plants or through ?

Heat: when the bio gas is incinerated at the CHP, heat is created along with the electricity. This heat produced can be used for heating the CHP site or directed to another purpose. With carerful utilisation of the heat, prodcued when incinerating the bio gas, the efficiency of the CHP can be considerably increased.

Natural gas: through various methods, bio gas can be cleaned of the undesirable compounds and be fed into the natural gas grid as Biomethane or Bio natural gas.

Fuel: bio-methane as a fuel provides large carbon dioxide (CO2) saving potential. With the addition of bio-methane to natural gas, the carbon dioxide output can be reduced considerably when compared to gasoline.


Bio gas has many options for use and is easly stored. Bio gas is far superior to other renewable energy resources. Bio gas can generate power continuously and it is independent of external factors, such as; the Sun, wind, water, weather.

Bio gas is the positive option for providing cleaner energy sources collected entirely from waste materials.

  • Bio gas makes energy production safer,
  • Bio gas supplies electrical power, heat and can be converted to Compressed Natural Gas (CNG), Liquid Natural Gas (LNG) and generator oil
  • Bio gas is a direct substitute for natural gas but is not a fossil fuel and thus is more environmentally friendly
  • Bio gas can be used as fuel
  • Bio gas is good for the environment, the Global cilmate and reduces the of Carbon Dioxide levels
  • Organic residuces can be sensibly utilised and do not need to be disposed of
  • Bio gas manure can replace mineral fertilisers
  • Bio gas palnts can be utilised by industries and agriculture
  • Bio gas can strengthen rural areas and create career oppotunities.
Contact us for more information