The LFC-300 biodigester featured in the galley of a ship amongst other stainless steel equipment. Food Waste Biodigester for
Cruise Ships, Cargo Ships, and Yachts
Wide range of aerobic biodigesters built to withstand oceanic conditions
and capable of digesting 10–3000 kg of food waste per day.
Close up image of food waste and vegetables being poured into the LFC biodigester. Stop Plastic Pollution and
Divert Microplastics from the Ocean
Meet DOJ and MARPOL compliance,
improve operations, and reduce your carbon footprint
Cruise ship docked, named Queen Elizabeth. Onboard Food
Waste Solutions
Industry leader of marine
food waste digesters.

Our Solutions for Waste Management

About the LFC biodigester for ships

The LFC® biodigester is a commercial aerobic biodigester that decomposes food wastes within 24 hours. It uses a series of processes in which micro­organisms break down biodegradable material in the presence of oxygen. The output is grey water that can be pumped directly overboard or treated by the vessel sewage treatment plant.

Using Power Knot’s LFC biodigesters on ships ensures that organic waste can be safely disposed of with no possibility of plastics entering the ocean. With hundreds of machines deployed across cruise ships, cargo ships, FSRUs, tankers, and mega yachts, Power Knot Ocean brings seven years of experience to solving problems of organic waste on vessels while meeting MARPOL regulations.

How it Works

The LFC® biodigester uses a series of processes in which micro­organisms break down biodegradable material in the presence of oxygen.

Organic Waste

Organic Waste

Organic waste is segregated from other types of waste and placed into the LFC biodigester.

Microorganisms

Microorganisms

A special blend of microorganisms from Powerzymes are housed in Powerchips.

Oxygen

Oxygen

Paddles in the LFC biodigester turn to add oxygen and begin aerobic digestion.

Digestion

Digestion

Microorganisms eat the food waste and convert it into water.

Output

Output

Discharged into waste stream.

Prevent Plastic Pollution with the LFC biodigester

The mechanical design of the biodigesters ensures that organic waste can be safely disposed of with no possibility of plastics entering the ocean.

If any non-organic material ends up in the biodigester, it is not digested by the microorganisms. Multiple levels of protection such as metal grates and filters prevent the plastics from contaminating the waste stream. The plastics remain safely in the machine until removed by the operator.

The result output is grey water free from contaminated microplastics that can be pumped directly overboard or treated by the vessel sewage treatment plant.

Latest News

Plastic Pollution in the Ocean is prevented by using Biodigesters to meet DOJ Requirements
January 19, 2023
Plastic Pollution in the Ocean is prevented by using Biodigesters to meet DOJ Requirements

Power Knot Ocean, the market leader for onboard organic waste management solutions in the marine environment, announced today that its ...

How improper food waste management leads to microplastics in the ocean
July 11, 2022
How improper food waste management leads to microplastics in the ocean

When a single-use plastic bag from the grocery store or plastic straw from a morning coffee doesn’t make it to the recycling center, ...

This is why the marine industry uses biodigesters
May 20, 2022
This is why the marine industry uses biodigesters

The Power Knot service and support team recently took these items out of an LFC biodigester. Upon closer inspection, we found the remov...

Power Knot Receives Food Digester Orders for Services and Support from Carnival UK
February 15, 2022
Power Knot Receives Food Digester Orders for Services and Support from Carnival UK

Power Knot LLC has received multiple food digester orders for spare parts, services, and support from Carnival United Kingdom (CUK).

Modern Food Waste Solution for Ships: Switching from Food Pulpers to Biodigesters
November 7, 2021
Modern Food Waste Solution for Ships: Switching from Food Pulpers to Biodigesters

Food waste is one of the biggest issues that maritime vessels are still struggling to deal with. We review and compare food pulpers aga...

Luxury Super Yacht Just B Installs Food Digester from Power Knot
August 30, 2021
Luxury Super Yacht Just B Installs Food Digester from Power Knot

Just B, a luxury super yacht capable of comfortably accommodating up to 14 guests in 7 cabins, has installed the LFC-25 biodigester as ...