This document summarizes a presentation by RuSiTec about their scalable biogas solution. Their technology uses a second generation process to convert cellulose and hemicellulose from agricultural waste into biogas. The process can use a wide variety of feedstocks and has short retention times, reducing plant size and costs compared to traditional biogas. Their modular bio-refinery system is containerized for flexible installation. It produces biogas, animal feed, nutrient-rich water, and reduces greenhouse gas emissions. The technology can be scaled from 30kW to 1.2MW and is being demonstrated through partnerships in Germany, South Africa, and other countries.

1. RuSiTec – Georgsmarienhütte - Germany
presented by Mr. Horst A. Unterlechner — March 2021
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Rusitec Biogas Solution
The Complete Scalable
Green Energy Solution

2. Intervention
2
Cellulose is the most
abundant organic
molecule in nature, and it
is the main constituent of
plant cell walls
Feedstock produced
at source from
agriculture waste
and food production
- creating renewable
sustainable energy
solution and jobs
Technology is scalable
and can be rolled out
across Saudi Arabia

3. Agriculture Key Challenges
International Focus
3
GHG
composition
Contributors

4. Agriculture Key Challenges
Agri - Waste Cycle
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FARMING
Feedstock
Cattle
Dairy
Agri Economy
Revenue
stream
• Napier Grass
• Agro by-product
• Manure
• Slaughter
waste
Technology
AD &
Hydrolysis
• Agro products
• Beef industry
• Milk
• Animal feed
• Fertiliser
• Energy sale
• Carbon credits
offsetting Carbon
footprint
• 1&2 Generation
Biogas plants
• Produce
• Biogas
• Animal feed
• Potable Water
• Nutrients (fertiliser)
• Dairies & agro
processing
Cross subsidy
Via energy sales

5. Opportunities
Using Organic Waste
5
convert cellulose & heme-cellulose into:
Sulphur free
biogas
recover and
retain nutrients
applying 2G biochemistry
Bio Refinery
convert biomass to energy
collect, produce & harvest biomass
commercially
high quality
protein rich
animal feed

6. Disadvantages
Traditional Biogas Plant
• Traditional biogas plants are characterised by
long retention times that require large fermenters
that results in high investment and operating costs
• Require facial feedstock or high-quality energy
crops to achieve successful production of biogas
• Between 25% up-to 50% of the applied biomass is
never converted through tradition biogas plant
• High costs of management of substrates and
processing challenges in existing plants also adds
to low-economic feasibility typical biogas plants
are characterized by extreme retention times,
huge fermenters, high investment and operating
costs
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7. Targets
Biomass And Feedstock
• the new innovative technological approach provides the opportunity to use an
extremely wide spectrum of vegetable production residues and waste materials
(i.e. hay, straw, rape, grass, draff, bran, beet, waste paper, grass cuttings, biomass
from contaminated areas, not usable for food and feed production, …)
• an access to the most common renewable resource of the world, i.e. cellulose and
hemicelluloses
• If this material can be used it can significantly reduce feedstock cost – reduced
biogas production cost
• Sustainable renewable feedstock
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8. Solution
Second Generation Of Digesters
J.W. Czerkawski
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• Copy natures process and convert all cellulose
and hemicellulos material into biogas
• Split traditional biogas process
a modular bio - refinery,
• Reduce retention time & plant size
short retention times (2 – 3 days instead of 30 –
180 days)
• Large selection feedstock
• Much more controllable biological process
Output
• Protein rich substrate
• Sulphurs free biogas
• Nutrients rich water

9. Solution
Demo Plant
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Rumen cellulose bio-refinery
Hannover University Germany
commercial tests 2013 - today

10. Solution
RaCBio Bio-Refinery
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• Containerised
• Non permanent installation required
• Monitoring & control equipment
• Various options in energy conversion (electricity via CHP, heat or
bio-methane via scrubber
• Can be used as hybrid (electricity & gas – replace fuel/ diesel)
• Remote monitoring & control - 24/7/365

11. Solution
Racbio Bio-Refinery
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Min Max Min Max
30kW
up
to
50kW
up
to
75kW
up
to
105kW
up
to
135kW
up
to
210kW
up
to
500kW
up
to
1,2MW
Diesel eqv
liter/ day
CNG eqy
kg/day
CHP kWh
output
Racbio5 1
x12m 5 0,7
5 1,7
5 1
3 3
3 x x x 100 - 420 135 - 310 30 - 7
5
Racbio10 1
x12m 1
0 1,5 3,5 2
5 5
8 x x 180 - 650 270 - 620 75 -105
Racbio20 2
x12m 2
0 3,0 7,0 5
0 117 x x 360 - 1500 540 -1260 135 -210
Racbio30 2
x12m+6
m 3
0 4,5 10,5 7
7 175 x x 240 - 2300 830 - 1880 210 - 500
Racbio60 4
x12m+12m 6
0 1
0 2
1 140 350 x 500 - 5000 1880 - 3760 1200
System
model
name
Containers
Reactor
size
m3
Feeding
ton/day
Biogas m3/hr
Ele
ctrical load CHP size can vary
based on a
vailibel gas
Gas & ele
ctrcity range
• Standard equipment
• Modular design
• plant don’t need gird
connection —> off -
grid (battery storage,
heater, solar and CHP)
Input Output
1 000 kg cellulose
feedstock DM>60%
(maize, corm, wheat grass
silage, etc)
· +- 500 kg protein rich animal feed pellets with 15 – 40% pure protein per volume
· 500m3 biogas; 52% CH4 = 22MJ/m3 energy from this it is possible to produce:
· 1 700 kWh - electricity (at 35% conversion efficiency) or
· 240 litres equivalent of diesel or petrol ( at 36Mj/litre) or
· 180kg of equivalent LPG gas (at 49Mj/kg)
· 500 litre of nutrient water (+- 80% of total volume) containing phosphor,
potassium, calcium and magnesium this can be used as is or filtered into drink
water
· GHG saved 5,27 ton CO2e

12. Solution
Manufacturing / Partner
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All our plant are pre- manufactured in various countries and
assembled to the bio-refinery in Saudi Arabia.
During the assembling site operator will be trained.
Partner:
• iRCB(Pty)Ltd. Industrial (RaCBio ) – rapid cellulose bioreactor (second
generation technology) 30 - 1,2MW 🇿🇦
• LVS Botswana - electrical & control specialist + MV & HV
interconnection 🇧🇼
• KTS - Gas storage & cleaning technology for sewage gas 🇩🇪
• Various component supplier 🇩🇪

13. Contact Us
RuSiTec GmbH
Werner-von-Siemens-Straße 18
D - 49124 Georgsmarienhütte
Tel.: +49 5401 8 32 90 20
E-Mail: info@rusitec-biogas.de
www.rusitec-biogas.com
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Thank You For Your
Attention
iRCB Biogas
Horst A. Unterlechner
General-Keyes-Straße 19
A - 5020 Salzburg
Tel.: +43 664 1405 727
E-Mail: ircb_biogas@icloud.com