© Natural Resources Institute Finland

Satu Ervasti, Luke

Biogas production – natural

part of bioeconomy

© Natural Resources Institute Finland

Sustainable circular bio-

economy:

Efficient and sustainable use

and valorisation of biomass

and biomass side-streams

27.11.2019 Sustainability assessment

Availability of potential biomass for target end use

© Natural Resources Institute Finland4 27.11.2019

Project example

“District heating plant-model of the new generation – carbon-neutral

energy and food production industrial ecosystem based on local ingredients

and industrial side streams” 08/2019-06/2021

• Utilizing the surplus heat from wood-based heating plant (pyrolysis)

• combining different side streams (wood biomass, food waste, side steams from

agriculture and municipalities, reindeer meat production, fisheries etc.)

• Linking pyrolysis, recirculating aquaculture, greenhouses, biogas production, farming

of insects and algae etc.

• The main idea of the platform is to combine local energy and food production.

• The platform of the energy and the industrial ecosystem is modelled.

© Luonnonvarakeskus

Experts in Luke

Jokioinen

– Sari Luostarinen

– Elina Tampio

– Markku Vainio

– Johanna Laakso

– Minna Kahala

– Lucia Blasco

Espoo

– Erika Winquist

– Ari-Matti Seppänen

– Jyri Maunuksela

Jyväskylä

– Saija Rasi

– Ville Pyykkönen

Kajaani

– Elina Virkkunen

– Pasi Laajala

Rovaniemi

– Satu Ervasti

© Natural Resources Institute Finland

Biochemical conversionAnaerobic digestion in different scales

Biochemical methane potential (Jokioinen)

• Max. 90 x 500 mL batch reactors

and

• 16 x 400 mL batch reactors

• Operational temperature +25…+90 ºC

• Automated gas volume measurement and data logging

© Natural Resources Institute Finland

Biochemical conversionAnaerobic digestion in different scales

Lab-scale biogas reactors (Jokioinen)

• 4 x 11 L and 2 x 6 L continuous

reactors

• Max. 90 c 500 ml batch reactors

• Operational temperature +35…+60 ºC /

2…60 ºC

• Automated data logging and process

control

© Luonnonvarakeskus

Biochemical conversionAnaerobic digestion in different scales

Pilot-scale dry fermentation (Jokioinen)

• Capacity 2 x 1 m3 batch-type reactor

• Operating temperature +20…+50 ºC

• Automated measuring and data logging

Farm-scale biogas plant (Maaninka)

• 300 m3 continuous reactor and 300 m3 post-digestion tank

• 60 kWh CHP, 80 kWh boiler

• Feed: dairy manure 3500 m3/a, plant biomass 300 t/a

• Automated solid material feeder

• Scale, conveyor belt and small crusher

© Luonnonvarakeskus

Pre/post treatment and nutrient concentration

Membrane filtrator (Jokioinen)

• Testing volume of 5-50 litres

• Membrane area from 0.036-0.72 m2

• Simultaneous test of different membrane types

Pilot-scale ammonia stripping (Jokioinen)

• Recovery of ammoniacal nitrogen from liquid fractions(reject waters, liquid fractions of digestates etc.)

• Total height of stripping column 4.3 m (stripping section2.15 m)

• Acid scrubber for ammonia concentration

• Automated process control

Screw-press separator (Maaninka)

• Solid-liquid sepration of e.g. animal slurries and digestate

Thank you!