biological electricity production
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Biological electricity production
Group Work:
Aura Salmela
Katharina Rohr
Miriam Rueda-Noriega
Victor ChukwumahSonia Bochon
Sheyla Ortiz-de-Garcia
Summer School Valladolid 2011BIOCEN
Strategies for bio-energy and bio-fuel production Life
cycles, assessment and evaluation
Valladolid, 2 september 2011
Tutor:
Dr. Peter Westermann
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Contents
Introduction
Process of methane production
1. Electromethanogenesis
2. Anaerobic digestor
Comparison with different countries and methods
Advantages and disadvantages
Conclusion
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Introduction
Production ofmethane per
hectare at differentlatitudes
Energy crops(Anaerobic
Reactor)
Solar Energy+ Electrome
thanogenesis
Estimate andcompare the
efficiencyand
perspectives
Goal:
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Methane from Electromethanogenesis
Principle
Anode/Cathode/membranePower (solar panels)
Microorganisms
Efficiency
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Methane from anaerobic digestion
Anaerobic Reactor
Series of processes
MicroorganismsAbsence of Oxigen
Industrial or domestic
proposes
Manage waste &
release energy
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Methane from anaerobic digestion
Carbohydrates
Fats
Proteins
Sugars
Fatty acids
Amino acids
Carbonic acidsand alcohols
Hydrogen
Carbon dioxide
Ammonia
Hydrogen
Acetic Acid
Carbon dioxide
Methane
Carbon Dioxide
Hydrolisis Acetogenesis MethanogenesisAcidogenesis
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Methane production from crops
SPAIN FINLAND GERMANY POLAND DENMARK
Type of productionSugar
beet
Reed canary
grass Corn
Sugar
beet
Wheat
straw
Mass (tonnes/ha/year) 69,83 7 50 8 10
Biogas(m3/kgSV) 0,5 - - - 0,250
Composition methane(%) 68,0 - 53 theorical 61,6
Methane (m3/ha/year) 16619,54 3000 4902,5 8000 4000
Methane (tonne/ha/year) 11,30 2,16 3,5 5,4 2,72
Sugar beet Reed canary
grassCorn Wheat straw
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Methane production from microbial cells
Spain= 4Kwh/m2day
Germany= 2.68Kwh/m2day
Poland= 2.88Kwh/m2day
Finland= 2.68Kwh/m2day
Denmark= 2.9Kwh/m2day
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SPAIN FINLAND GERMANY POLAND DENMARK
Energy (KhW/m2day) 4 2.68 2.68 2.88 2.9
Useful energy(KW/haday)8000 5360 5360 5760 5800
Necessary Energy /Methane (Kwh/molday)
0.22 0.22 0.22 0.22 0.22Methane (kmol/ha/year)
13077 8762 8762 9416 9481
Methane(tonnes/ha/year)209 140 140 151 152
Methane production from microbial cells
E=Q x V E: Electrical energy(Joules)Q: Quantity of electricity(Coulombs)
V: Voltage (Volts)
Efficiency solar panel=20%
Slope = 8.33 mol e-/ mol methane (1V)
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Results
0
500
1000
1500
2000
2500
3000
3500
SPAIN GERMANY POLAND DENMARK FINLAND
electromethanogenesis
0,00
2,00
4,00
6,00
8,00
10,00
12,00
SPAIN GERMANY POLAND DENMARK FINLAND
digestor
Methane(ton
nes/ha/year)
DigestorMicrobial cell
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G t d b F it PDF C t F it S ft
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Results
0,00
50,00
100,00
150,00
200,00
250,00
SPAIN GERMANY POLAND DENMARK FINLAND
Methane(tonnes/ha/year)
DigestorMicrobial cell
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Advantages / Disadvantages
Solar Energy and vs. Energy Crops
Electromethanogenesis (anaerobic Reactor)
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Solar Energy and Electromethanogenesis:
Advantages:
carbon dioxide neutral
good storage and transport
usable for several applications
Disadvantages:
the amount of methane is minor (practice)
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Energy Crops (anaerobic Reactor):
Advantages:usable for several applications
technology has considerably improved
environmentally friendly way to use waste
better for the climate
Disadvantages:
high cost for the digesters
high cost for the transportation of biomass
corrosive impurities
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