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

Polarstern reaches North Pole with the LFC biodigester onboard to support research activities
September 8, 2023
Polarstern reaches North Pole with the LFC biodigester onboard to support research activities

The German research vessel RV Polarstern has again reached the North Pole today. It left Tromsø, Norway on 03 August 2023 with a crew ...

How LFC biodigesters can tackle Europe’s LNG discharge dilemma
March 7, 2023
How LFC biodigesters can tackle Europe’s LNG discharge dilemma

Over 60 LNG tanks are currently stuck at the port, unable to offload their natural gas and organic waste. The LFC biodigester helps LNG...

Nearly 600 biodigesters deployed across cruise fleet
January 9, 2023
Nearly 600 biodigesters deployed across cruise fleet

In June 2022, Holland America’s Corp. Fleet Environmental Compliance Manager, Sanjay Bhatt, visited Power Knot’s headquarters in Si...

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 ...

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...

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...

Customers at Sea

Golar LNG Goes Green
August 31, 2023
Golar LNG Goes Green

The Golar Freeze, a Floating Storage and Regasification Unit (FSRU), spearheaded a sustainable shift in maritime waste management by em...

Carnival Cruise uses LFC biodigester for food waste solution onboard
April 14, 2022
Carnival Cruise uses LFC biodigester for food waste solution onboard

After extensive testing and trials over a three year period, Carnival has chosen the LFC biodigester from Power Knot as their main biod...

Tanker Golar Freeze keeps oceans free from waste with LFC Biodigester
July 27, 2021
Tanker Golar Freeze keeps oceans free from waste with LFC Biodigester

In 2019, the Golar Freeze was stationed in Jamaica and the vessel owners realized that disposing of waste food was an expensive and cum...

Denali Princess Wilderness Lodge Preserves National Park with LFC biodigester
July 19, 2022
Denali Princess Wilderness Lodge Preserves National Park with LFC biodigester

Due to its remote location, Denali National Park is one of the last remaining places in the world that has remained relatively untouche...

Just B superyachts sets sail for sustainability with food waste digester
May 20, 2022
Just B superyachts sets sail for sustainability with food waste digester

In early 2021, luxury superyacht Just B purchased and commissioned the installation of the world’s smallest commercial grade biodiges...

Newrest uses biodigester for food waste management
August 28, 2022
Newrest uses biodigester for food waste management

Newrest Chile provides catering and food management services to large mining camps. They observed the LFC biodigester being used on ano...