Date post: | 30-May-2018 |
Category: |
Documents |
Upload: | camvan04h5 |
View: | 217 times |
Download: | 0 times |
of 23
8/14/2019 Biofuels From Micro Algae
1/23
8/14/2019 Biofuels From Micro Algae
2/23
Contents
Biofuels
otent a o m croa gae
Production methods Feasibility
Research focus
Conclusions
8/14/2019 Biofuels From Micro Algae
3/23
Microalgae markets
Applications Price/KgBiomass
Market
volume
Nutraceuticals (human consumption) 100 60 million
- -
Bulk chemicals 1-5 > 50 billion
Present market volume: 1 billion
Biofuels < 0.40 > 1 trillion
Objective: market segment < 0.40/ kg biomass
8/14/2019 Biofuels From Micro Algae
4/23
Biofuels
Botryococcus Alkanes (C34)
-
Ather algae 20-40% lipids
-
High productivity
Palmoil: 6,000 l/ha/year, - ,
l/ha/year No competition with food
Investments in US:US$ 2.4 billion (NYTimes)
8/14/2019 Biofuels From Micro Algae
5/23
8/14/2019 Biofuels From Micro Algae
6/23
Hype cycle of biofuels
8/14/2019 Biofuels From Micro Algae
7/23
Potential of microalgae
250
300
-1y
r-1)
150
200
ivity(ton
h
Bonaire
50
100
ssproduct
0
Ponds Tubular Flat panel Theoretical
Biom
Lipid content algae is 20-40%
8/14/2019 Biofuels From Micro Algae
8/23
Production methods of microalgae
Maximum use of sunli ht
Inside of the reactor should bedark
Process to be applied in direct
sunlight At high light intensities chane of
photo inhibition
Supply of CO2 Produced O2 is toxic
8/14/2019 Biofuels From Micro Algae
9/23
Production methods of algae
Open systems
Raceway Cheap?
Closed systems
Bubble columns Tubular reactors
Flat panels
8/14/2019 Biofuels From Micro Algae
10/23
Feasibility study
Raceway ponds
Horizontal tubes
Flat panels
8/14/2019 Biofuels From Micro Algae
11/23
Tubular reactor
Centrifuge
Monitor and ControlUnit
Centrifuge
Monitor and ControlUnit
Harvesttank
NutrientInlet
DO
Harvesttank
NutrientInlet
DO
Degasser
25 %
Stack
gasCO2
Biomass
T
pHDegasser
25 %
Stack
gasCO2
Biomass
T
pH
HeadspacePump HeadspacePump
Solar collector Stack gasSolar collector Stack gas/CO2/CO2
8/14/2019 Biofuels From Micro Algae
12/23
8/14/2019 Biofuels From Micro Algae
13/23
Sensitivity analysis
Curacao PE 5%, CO2 Incentive, medium and CO2 free
PE 5%; CO2 and medium for free, CO2 incentive
Mixing w ith 10* less energy
Mixing 10*, PE 5%, CO2 incentive, mdium and CO2 free
Photosynthetic Efficiency 5%
CO2 incentive (15 / ton CO2)
No centrifugation
CO2 for free
Both CO2 and medium for free
Dilution rate 10% v/v per day
-100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0
Culture medium for free
% Decrease in roduction cost
8/14/2019 Biofuels From Micro Algae
14/23
Biomassaproduction costs
10.62 / kg biomass1 ha
100 ha
Centr ifuge westfalia separator AG Centr ifuge Feed Pump Medium Filter Unit
Medium Feed pump Medium preparation tank Harvest broth storage tank
. g omass
89% decrease
Installations costs Instrumentation and control Piping
Buildings Polyethylene tubes Photobioreactor Culture medium
Carbon dioxide Media Filters Air filters
Pow er Labor Payroll charges
Maintenance General plant overheads 0.4 / k biomasspotential
15 /GJ
8/14/2019 Biofuels From Micro Algae
15/23
Comparison of systems (100ha)
UnitsRaceway
pondFlat
panelTubularreactor
Biomass roduction ton / ear 2071 6363 4141
Photosynthetic efficiency % 1.5 5 3
Light path m 0.2 0.03 0.034
Biomass production costs / kg DW 5.70 4.03 4.02
Main cost factor %Centrifuge
15 %air blowers
24%Circulation pump
46%
8/14/2019 Biofuels From Micro Algae
16/23
Present projects
Development high-efficiency photobioreactors
ax m za on o caro eno pro uc on
Strain selection and milking Hi h-cell densit cultures and rowth inhibition
The Green Solar collector
Photobioreactor performance under high irradiance xtract on o o rom p -r c m croa gae
O2 inhibition of microalgal growth
-
Modeling dynamics of photosynthesis
8/14/2019 Biofuels From Micro Algae
17/23
WETSUS research project
Funding via Technological Top Institute Wetsus 25% Wa enin en Universit
25% companies
50% government
Objective: reduction production costs
Biofuels is not the only product Breakthroughs are needed to make systems economically
feasible
Joined forces
Basis for demonstration projects
8/14/2019 Biofuels From Micro Algae
18/23
Bottlenecks
Energy for mixing
Productivity/photosynthetic efficiency
Lipid productivity CO2 fixation
O2 production
Making use of waste nutrients ore nery: rac ona on o pro e ns
Harvesting
Production scenarios
8/14/2019 Biofuels From Micro Algae
19/23
Participating companies
Biosoil ow em ca s Eneco Energie Friesland Foods Hednesford Ingrepro
Neste Oil Nuon
osen aa nergy Syngenta
8/14/2019 Biofuels From Micro Algae
20/23
Projects in development
Wetsus: biofuels-
EU Basis photosynthetic efficiency
nnovat on n c ence an ec no ogy, e g um Lipid productivity
Demonstration reactors Proviron: sustainable chemical industry
Zeeland Soul: integrated aquaculture
EOS SenterNovem
Center for Photosynthesis Research
8/14/2019 Biofuels From Micro Algae
21/23
Center for Photosynthesis Research
Systems biology ofphotosynthetic processes
Re-engineering organisms for
optimal photosynthetic energyconversion into biomass
-tapping before it is converted intobiomass
Initiative n s ry o gr cu ure, a ure
and Food Quality Wageningen University and
Research Center
e en n vers y VU University Amsterdam University of Groningen
8/14/2019 Biofuels From Micro Algae
22/23
Conclusions
Production of chemicals and biofuels frommicroalgae feasible
ro uct v ty s g an t ere s no compet t onwith food production
ec no ogy no ye we eve ope
Join forces
om nat on o app cat ons
8/14/2019 Biofuels From Micro Algae
23/23
www.bpe.wur.nl
Vacancies for PhD students
Wageningen UR