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Image by Neslihan Gunaydin

Food Waste to Compost

Food waste disposed of in landfill releases methane, a greenhouse gas that is much more potent than carbon, but when converted into compost and applied to the land it sequesters carbon, making it an integral part of a Net Zero strategy.  

Transforming organic waste into compost reduces costs as well as GHG emissions associated with your business.

The Demeterra Range of Composters

The Demeterra composters accept all types of biowaste including cooked and raw foods, meat and fish, manure, citrus fruits, wooden crates and cardboard.  The temperature controlled process eliminates any pathogens and the system meets SPAn3 Health Regulations. 
Composting in 15 days Diagram.JPG

How does it work?


Pre-sorted organic waste and chopped wood or pellets are added to the composter 


The composter mixes the materials in a temperature controlled environment at around 65° to kill any pathogens 


After approximately 15 days of aerobic composting, the final compost can be removed from the Demeterra 


Rest the compost outdoors or in a ventilated storage space for approximately 6 weeks before using on site.  


If your business does not have gardens, consider selling the compost to gain a new income stream, or donate the compost to local farmers, community garden groups, your staff or others that can make good use of it.  


  • Accepts all types of bio-waste: cooked, raw, meat, manure, citrus fruits, wooden crates, cardboard

  • Barely 30 minutes per day required to operate the machine

  • Internal shredder for maximum efficiency

  • Programmable, remote controlled and automatic traceability


  • Low running costs at less than €200 per year

  • Low energy requirements to operate

  • Inside temperature reached by natural action of bacteria so no external heat source required

  • Optimal carbon balance t 10kg CO2 equivalent per tonne


  • Odour Free

  • Enclosed to avoid attracting insects or rodents

  • Internal temperature above 60°C

  • Complies with health regulations (SPAn3)

  • Completely safe to use

Upcycle Composter with person disposing of waste.JPG

Sort Food Waste before Depositing in the Demeterra

What size suits your business?


Demeterra 70

Demeterra 160

Demeterra 330

Kilos of food waste / day

Total food composted / year

Equivalent restaurant covers / day

Compost production / day 

Wood pellets needed / month

Surface needed to operate

Suitable for residential users

25-80kg / day                        80-160kg / day                          160-350kg / day

70 litres                                  160 litres                                   330 litres

Less than 1m³                        Less than 2m³                           Less than 3m³

12 + 6 m²                                28 + 10 m²                               44 + 12 m²

2000 families                         4000 families                            8000 families

27 tonnes                              58 tonnes                                  120 tonnes

800 covers                             1600 covers                               3200 covers

The Business Case

Approximate annual savings from avoiding waste collection  (€270 / tonne):    €7,560 - €35,910


Potential annual income from sales of loose compost:  (€150 / tonne)               €1,680 - €7,980


Potential annual sales of packed compost: (€450 / tonne)                                 €5,040 - €23,940

Return on Investment (if compost is sold loose):           3.6 - 17.1 years

Return on Investment (if compost is sold packed):       2.5 - 8.4 years

Return on Investment (compost is donated):                 3.8 - 8.6 years

All financial gains are subject to change

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