How It Works?

Revolutionary Horizontal Bio-fermentation Process

FimusKraft Biogas Plant (FKBP) gives you a possibility to turn the biowaste cost effectively into bio-energy, electricity and heat.

As side products you will get ecological high-quality organic fertilizer.

All in all with some dedicated bio-waste you will be able to receive valuable raw materials for food and beverage, pharmaceutical and chemical industries.

What Makes FimusKraft Biogas Plant Special?


Biomass feed up to 30% solid content


Extremely Fast 22-26 days fermentation


Green hydrogen and CO2 output


High quality biomethane up to 70%


Enriched liquid fertilizer and irrigation water


Pharma, food and chemical industry raw materials


Modular, compact size and light weight

Biowaste Treatment Process

The process from biowaste to energy of the FimusKraft bioenergy plant

1.Biowaste feeder and pre-treatment

Feeder and pre-treatment module is taking care to provide optimized biomass feed for the process and minimizing emissions at the same time.

Extra liquid is removed to increase sludge solid content before fermenting. Liquid share can be used as fermentation. The unit can also be optimized for waste water cleaning.

2.Microbiological Booster Unit (MBU)

Our special booster unit preprocessing biomass to shorten fermentation time
and boost gas production. This unit is homogenizing biomass structure and can produce green hydrogen as well as pharmaceutical & chemical industry raw materials depending on the feedstock type

3. Biofermentation process

Biowaste is fed into the fermenter tank through the input funnel. The horizontal fermentation tank is a Plug flow reactor that enables to follow the First In First Out (FIFO) principle. FKBP’s fermenter system includes a special mixer which ensures that the sludge in each fermentation tank is thoroughly mixed, so that bacteria have enough nutrients, thereby increasing their production of biogas.

Fermentation process operating temperature is precisely controlled and can reach up to 58ºC. Typically required fermentation time being 22-26days is 65% shorter than regular wet fermentation process. Result of the process is biomethane up to 70% purification and CO2. Hydrogen Sulfides H2S is almost entirely eliminated and odor is reduced.

4. Biogas development

The resulting biogas is lighter than air and rises to the ceiling of the fermentation tank, from where it is led into the joint gas storage container or bag which is situated on top of the fermentation container.

5. Combined Heat and Power (CHP)

    Methane-rich biogas is pumped from the gas inventory container into a microturbine via special pipes. The microturbine automatically burns gas and simultaneously rotates the generator that produces electricity, while heat is produced via a heat exchanger from the exhaust gases of the microturbine.

     6. Compressed Biogas (CBG)

      Purified and pressurized biogas can be fed into gas distribution networks or used for gas engine vehicles.

      7. Fertilizer

      Concentrated liquid bio-fertilizer (N, P, K) can be produced from fermented bio-waste sludge. Solid component can be used for soil enrichment (mild)

      8. Waste water treatment

      Making clean water for irrigation from fermentation, animal dung and waste water. Removal of pharmaceutical and medicine recidues in the water cleaning process (add-on process)

      Technical details of the FKBP

      The FKBP system is totally modular and can easily be enlarged if/when waste amounts are increasing. Also it is possible to add later on more process steps to produce valuable raw materials in addition of bioenergy and fertilisers. The fermentation tanks are mounted horizontally and particularly they are following the FIFO principle. Total Mixing Concept (TMC) enables maximum slurry mixing and thereby flexibility to process different bio-wastes and combinations of biowaste, to improve optimization generally. The design of the bioenergy plant depends on the volume of the biowaste altogether. Fermenter volume of the small plant is around 200 – 600 m3. In large plants the fermenter volume is around 1500 – 2500 m3.

      Methane-rich biogas is pumped via special pipes from the gas inventory container into the Energy Development Center, which is located at separate container with a Control Room. Additionally the bio-fermentation system is operated and controlled from the Control Room.

      FimusKraft calculates the needed system size according to the customer information on the biomass content and volume. Tests can be made of the biomass to make more accurate calculation on the expected methane content. All the equipment and systems are delivered to and installation made with testing and trial runs at customer site. Training in operation and maintenance with system documentation belongs to delivery.

      A patented solution that has received international recognition!

      Our system has got its first patents and several field testing has made. Specifically our solution has gained a highly respected “Seal of Excellence” from European Innovation Committee.