Food Decomposition Machines

Digests 10–75 kg (45–165 lb) of waste food per day.

Digests 20–150 kg (45–330 lb) of food waste per day.

Digests 28–210 kg (60–460 lb) of food waste per day.

Digests 40–300 kg (90–660 lb) of food waste per day.

Digests 80–600 kg (175–1450 lb) of food waste per day.

Digests 240–900 kg (530–2000 lb) of food waste per day.

Digests 100–900 kg (220–2000 lbs) of food waste per day.

Digests 200–1500 kg (440–3300 lb) of food waste per day.

Digests 400–3000 kg (880–6600 lb) of food waste per day.

Metric Units

LFC-25 LFC-50 LFC-70 LFC-100 LFC-200 LFC-300 LFC-500 LFC-1000
Nominal capacity per day  25 kg 50 kg 70 kg 100 kg 200 kg 300 kg 500 kg 1000 kg
Typical capacity per day 10~75 kg 20~150 kg 28~210 kg 40~300 kg 80~600 kg 240~900 kg 240~900 kg 1000~1800 kg
Size, width x depth x height, cm 60 x 60 x 80 90 x 68 x 102 95 x 72 x 108 115 x 75 x 111 148 x 81 x 127 154 x 105 x 149 190 x 120 x 162 260 x 141 x 174
Weight when empty 136 kg 175 kg 220 kg 250 kg 350 kg 570 kg 830 kg 1250 kg
AC supply
100~260 V
120 or 230 V, 50 or 60 Hz , 15 A, single phase
208, 250, 380, 400 V, 50 or 60 Hz, 15 A 3-phase
Maximum power 0.2 kW 0.7 kW 0.7 kW 0.8 kW 0.8 kW 1.6 kW 2.4 kW 4.5 kW
Energy per day 1.5 kWh 3.6 kWh 3.6 kWh 5.7 kWh 5.7 kWh 10 kWh 14 kWh 24 kWh
Water per day  75 litre 150 litre 120 litre 300 litre 600 litre 900 litre 1500 litre 1900 litre

USA Units

LFC-25 LFC-50 LFC-70 LFC-100 LFC-200 LFC-300 LFC-500 LFC-1000
Nominal capacity per day 55 lb 110 lb 150 lb 220 lb 440 lb 660 lb 1100 lb 2200 lb
Capacity per day 22~165 lb 45~200 lb 60~460 lb 90~660 lb 175~1450 lb 530~2000 lb 440~3300 lb 2200~4000 lb
Size, width x depth x height, inches 24 x 24 x 31 36 x 27 x 40 37 x 29 x 44 43 x 30 x 44 59 x 35 x 52 61 x 43 x 59 76 x 48 x 65 102 x 56 x 69
Weight when empty 300 lb 380 lb 490 lb 550 lb 770 lb 1260 lb 1830 lb 2760 lb
100~260 V
120 or 230 V, 50 or 60 Hz , 15 A, single phase
208, 250, 380, 400 V, 50 or 60 Hz, 15 A 3-phase
Maximum power 0.2 kW 0.7 kW 0.7 kW 0.8 kW 0.8 kW 1.8 kW 2.4 kW 4.5 kW
Energy per day 1.5 kWh 3.6 kWh 3.6 kWh 5.7 kWh 5.7 kWh 10 kWh 14 kWh 24 kWh
Water per day 20 gallon 40 gallon 56 gallon 80 gallon 160 gallon 240 gallon 400 gallon 500 gallon

Key Features

  • Decomposes waste food at your facility
  • Food is decomposed within 24 hours
  • Continuous process permits food to be added any time and machine doesn’t need emptying
  • Discharge from machine is safe to enter sewage system
  • Can be installed in kitchen or work area
  • Simple and safe operation
  • Color touch screen interface
  • Weight of waste is continuously monitored and reported — shows statistics on usage and food waste digested
  • Incorporates comprehensive diagnostics and service schedules
  • Connects to the cloud so statistics on usage, diagnostics, and service schedules can be monitored remotely
  • Air-tight tank provides quiet and odor-free operation
  • All stainless steel construction
  • Ten different size models available
  • 3 years warranty on all parts and components
  • Worldwide sales, service, and support


  • Greatly reduces costs to dispose of waste food
  • Reduces size, quantity, and smells of trash bins
  • Eliminates flies and rodents that may be attracted to garbage bins containing waste food
  • Saves time and injuries of employees carrying trash outdoors
  • Weigh and dispose of waste food in one machine
  • Waste food does not go to landfill where it creates methane
  • Easily report CO2 equivalent diverted from landfill
  • Key element in making a facility have zero waste
  • Payback is typically 6 to 24 months
  • Significantly reduces carbon footprint of business


The LFC biodigester is a fully enclosed automatic bio-digester that disposes of most food matter within 24 hours. Once it is installed, you can add waste food at any time and only decomposed food is discharged into the waste water.

Water is injected into the LFC biodigester to maintain equilibrium for the microorganisms, to rapidly digest the organic material, and to flush decomposed material out of the machine. A rotating arm slowly churns the waste food to constantly mix the old food, new food, oxygen, and micro­organisms to enhance the decomposing function.

How It Works

The LFC biodigester uses a series of processes in which micro­organisms break down biodegradable material in the presence of oxygen. The environment of the LFC biodigester, with our proprietary mixture of microbes and enzymes, accelerates the digestion of most food products and bio-plastics within 24 hours. The output is grey water that is environmentally safe. You can discharge this down the drain or use it to enrich your landscape.

The LFC biodigester is a practical alternative to the traditional disposal of waste food. Anything you can eat, including fruits, vegetables, meat, fish, cheese, bread, rice, and noodles can go into the LFC biodigester. The food decomposition machine can digest both raw and cooked foods. The process is totally green because it uses no chemicals.

As one of earth’s oldest processes, composting is the most effective means of stabilizing and converting biodegradable waste. The waste food is not being chopped but it is decomposed to such a degree that it becomes a liquid and can exit the machine only through a fine mesh screen. The rich by-product is therefore safe and replenishes nature.

Saving the Planet

When waste food is discarded in a landfill, it degrades as an anaerobic process (in the absence of oxygen). This decomposition produces methane (CH4) which is 72 times worse for the atmosphere in the short term than carbon dioxide (CO2). The effect of this on global warming is huge, because the largest part of garbage sent to landfills in the US is waste food. Further, the decomposition smells and can cause health problems. Discarding 100 kg (220 lb) of waste food per day causes the equivalent of 153 tonnes of CO2 per year to be sent to the atmosphere.

The decomposition inside the LFC biodigester is an aerobic process (in the presence of oxygen). This produces CO2 and water in a natural manner that is accelerated in the food decomposition machine. This natural process is carbon neutral because the carbon was taken from the atmosphere to produce the food in the first place. The LFC biodigester uses minimal electricity that causes (for the LFC-100) the production of about 2.1 tonnes of CO2 per year.

Simple Operation

The LFC biodigester is constantly digesting the waste and you can add waste food at any time. Simply open the door, throw it in, and close the door. In this way, you can view the LFC biodigester as a bottomless bucket.

The motor on the LFC biodigester won’t run while the door is open for safety. Your operation can be streamlined because large bins and plastic bags are no longer needed to hold waste food. Instead, smaller bins are used that help avoid injuries to employees.

All configuration, indications, reports, and statistics are available through the touch screen. The operator doesn’t need to use the touch screen and for most applications the default settings work well. All configurable parameters are protected by password.

Weighing the Amount of Waste

Load cells on each corner of the LFC biodigester accurately weigh the amount of waste food in the LFC biodigester, the amount that is added, and the amount that is digested. This data is automatically stored and reported graphically and numerically. The data can be viewed by the hour, day, week, month, and year.

As the operator adds waste into the LFC biodigester, the touch screen indicates how much more can be added. When the door is closed the LFC biodigester indicates with a bright LED when more waste can be added with a simple green indication. As waste is added, the indication becomes yellow when no more waste should be added and red if the operator overloads the LFC biodigester.

Connection to the Cloud

The LFC biodigester can connect through its Ethernet port to a cloud server maintained by Power Knot. The LFC biodigester securely sends data about the operation of the LFC biodigester to the server and that data is retained for five years. The data includes the amount of waste food digested hourly, daily, weekly, monthly, and yearly; the number of times the door is opened in these periods; and the amount of CO2 di­verted from the landfill during these periods. If you have multiple machines, you can aggregate the data into a single report.

Remotely, you can view the health of the system including all diagnostics and when the LFC biodigester requires scheduled maintenance.

You have access to view and manipulate the data from any com­puter, tablet, or smartphone anywhere in the world. This access is available as long as you own the LFC biodigester at no charge to you.

For as long as the LFC biodigester is under warranty, Power Knot can monitor your LFC biodigester at no charge. We will send you an e-mail with weekly or monthly statistics and also alert you when it is time for periodic maintenance. We will also send an e-mail if there seems to be a problem and work with you to schedule service.


The amount of food that can be digested depends on the type of food, the frequency with which it is added to the LFC biodigester, and the duration of the working day.  The rated capacity of an LFC biodigester is based on a mixture of raw and cooked food as may be found in a typical restaurant added over a 12 hour to 16 hour working day.  The upper capacities in the table above assume that you add waste food over a 24 hour day. Cooked rice, pasta, or bread are some of the foods that are rapidly digested and if added in equal portions throughout the day then the capacities can be more than  those listed in the table below.


The LFC biodigester is usually installed inside the area where the food is prepared or it can be placed outside under a suitable protective cover. The machine has castors so it can be rolled into position. The feet on the load cells are then lowered onto the supplied rubber pads that help to reduce vibrations and noise.

The LFC biodigester requires hot and cold water input and a 1¼” to 3” drain out (depending on model). It also requires an electrical supply.

Global Features

Power Knot sells and supports its products worldwide. The LFC biodigester is fully certified and is available with different supply voltages so it can be used to save money globally.

The LFC biodigesters (models LFC-25, LFC-50, LFC-70, LFC-100, LFC-200, LFC-300, LFC-500, and LFC-1000) are manufactured by Power Knot and supported globally. The LFC biodigester decomposes food waste on site for commercial and industrial kitchens. For sales in the USA, the LFC biodigester is generally shipped from California .
Power Knot