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Renewable Solutions

Energy production through burning fossil fuels is one of the major contributors to the high levels of greenhouse gasses today. Because of this, industries are now being challenged to reduce their fossil fuel consumption. Therefore, we offer total solutions using agricultural and food residues to provide bioenergy and biofuels and make use of the most efficient technologies. These solutions help to reduce both waste and greenhouse gas emissions. Our solutions provide a full-service, turn-key realization of renewable energy facilities.

Food Waste Processing

Decentralized processing of food waste converted into RNG is contributing to both the energy transition and the circular economy.

The CIRC product range makes it possible to locally convert organic waste as a residual product into new green gas (climate-neutral bio-methane) that is used locally. It replaces natural gas with a sustainable alternative that can be used for heating, cooking or cooling and closes a biomass cycle.

The biodigester can be used to process a wide range of food waste from restaurants, food markets, conference centres etc. Using membranes with high separation efficiency, CH4 is separated from CO2 to produce biomethane. This technology produces very high methane yield (>80%).

The biodigester is installed in a compact enclosure with only a 7-10m2 footprint. The system is easy to integrate in both existing and new plants. The units are modular and scalable for waste streams up to 500kg/day.


Additional advantages are:

  • Conversion of bio-waste into methane gas within 12 hours
  • Produces its own high-quality plant food as a by-product
  • Save cost by reduced waste collection services
  • Works quickly, cleanly and odorless and reducing the existing waste storage
  • The CO2 savings can be converted into credits

Agri Residue Digester

Renewable Natural Gas (RNG), also known as CBG or biomethane, can be used as transportation fuel in vehicles running on compressed or liquified natural gas.

RNG can be produced from various agricultural feedstocks, including non-food items such as straw.
The first part of the solution is always to break down the fibrous material fast with either a dedicated straw handling system or a hydrolysis system which saves enormous processing time and therefore reduces investment in the installation considerably.

Feedstock undergoes the process of anaerobic digestion in tanks over the course of 30-40 days. During this process, raw biogas is produced comprising about 60% methane and 40% carbon dioxide. Carbon dioxide and other impurities are removed through a biogas treatment process, leaving nearly pure biomethane gas which is chemically equivalent to fossil natural gas.
The system including pre-treatment gives a smaller footprint for the plant and is proven to yield up to 20% more biogas per ton of feedstock compared to single phase digesters – especially from fibrous or very energy rich and daily changing feedstock.

The smallest size we supply is a 100 m3/hr system based on unique containerized modular system up to a larger size system up to 2.000 m3 utilizing more steel or concrete tanks.

Gas Upgrading System

We offer a system for biogas upgrading to a methane-rich gas, also known as RNG, CBG or biomethane. This unit is able to separate methane from the biogas with a very high efficiency up to 99%, using membranes. After the purification, the quality of the biomethane meets the requirements of natural gas.

With the membrane technology there are no chemicals required for the cleaning of the biogas and we can customize the CH4 content to customer’s or grid spec with minimal methane loss.

The biogas upgrading system can be used for biogas derived from different types of facilities, such as an anaerobic digestion plant or a sludge treatment plant. The system is already profitable for small size biogas plants due to available incentive systems.

Due to the membrane technology, the upgraded biogas meets the requirements for injection into the national gas network. Another option is to use the gas as transport fuel (CNG/LNG) replacing diesel. The obtained gas is a very clean fuel without particles and is CO2 neutral.

The separated CO2 can be liquified by a combination of cooling and compression. The advantage of producing liquid CO2 is that the liquid can easily be stored and sold to customers (green houses, beverages, cooling applications, slaughterhouses) in tanks.