Use of Microalgae for Wastewater Treatment
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Transcript of Use of Microalgae for Wastewater Treatment
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2010 CONFIDENTIAL
Kent BioEnergy CorporationWESTCAS 2010 San Diego, CA, June 18, 2010
Dr. James C. Levin, Director of Molecular Studies
USE OF MICROALGAE FOR WASTEWATER TREATMENTAND PRODUCTION OF RENEWABLE BIOFUELS
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2010 CONFIDENTIAL2
CONTROLLED EUTROPHICATION PROCESS (CEP)FOR TREATING AQUACULTURE DRAIN WATER
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2010 CONFIDENTIAL3
INITIAL RESEARCH SUPPORTED BY SEA GRANT
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Agency Research Topic Award
US Dept of Commerce ATP Techniques for Recycling of Aquaculture Effluents $2,000,000
US Dept of Agriculture Treatment and Reuse of Aquaculture Effluents $350,000
State of California (SSA) Reducing Eutrophic Conditions in the Salton Sea $1,000,000
EPA Management of CAFO Discharges $50,000
US Dept of EnergyUtilizing Microalgae for Carbon Sequestration and
Greenhouse Gas Abatement$750,000
National Science Foundation Microalgae Production, Harvest and Oil Extraction $150,000
Corporate Client Treatment of Landfill Effluents $2,600,000
KENT BIOENERGY HAS RECEIVED NEARLY $7.0 MILLIONIN GOVERNMENT & PRIVATE SUPPORT FOR ALGAE RESEARCH
TIMELINE OF DEVELOPMENT OF KENT BIOENERGY ALGAE TECHNOLOGY
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KENT BIOENERGY 160 ACRE MICROALGAE RESEARCH FACILITY
LOCATED IN THE COACHELLA VALLEY
Algae Pond
Production
System
(25 Acres)
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ALGAL HARVESTING AND DEWATERING SYSTEMS
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CONTROL OF EXCESS NUTIRENTSENTERING THE SALTON SEA
(Efforts to sustain fish and bird populations)
THE PROBLEM:
Terminal lake
6DOLQLW\
(XWURSKLFDWLRQ
High tributary flow rate (600,000 gpm)
Low nutrient concentrations (N & P)
Phosphorus is the limiting nutrient
8VHRI&(3WRUHGXFHHXWURSKLFDWLRQ
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KBE LARGE-SCALE MICROALGAECONTROLLED EUTROPHICATION PROCESS (CEP)
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A
SALTON SEA BIOLOGICAL REMEDIATION PROGRAM2002 2009
FOUR STAGE PROCESS OF CEP
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KENT BIOENERGY FIELD DATA ALLOWS US TO OPTIMIZE CEPOPERATING PARAMETERS FOR MAXIMAL PRODUCTIVITY,
NUTRIENT UPTAKE, AND CARBON CAPTURE
Water DepthAlgal Production
13.0
14.0
10.0
6.0
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
Spring Summer Fall Winter
AlgalProduction(gAlgae/m2-day)
Ag Drainage
Seasonal Productivity
Algal Lipid Content
20.0
12.0
6.5
0.0
5.0
10.0
15.0
20.0
25.0
Freshwater No-Stress Freshwater - N Stress Saltwater
AlgalLipidCo
ntent(%)
Lipid Content
Nutrient Uptake
Lipid MaximizationAlgal Harvest
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SELENIUM REDUCTION OF SALTON SEA AG DRAINAGE
From R. Gersberg, 2006-2007 studies
CEP40% Se reductionwith 4 6 Day
Retention
WETLANDS54% (Imperial) and
69% (Brawley)Se reduction
with 9 18 DayRetention
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SPECIES CONSERVATION HABITAT (SHC) SITESAT THE MOUTH OF THE ALAMO & NEW RIVERS
IN THE IMPERIAL VALLEY
Courtesy DWR
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EARLY START HABITAT USGSALAMO RIVER
IN THE IMPERIAL VALLEY
Courtesy of USGS
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CONSTRUCTED WETLANDS TMRWHITEWATER RIVER
IN THE COACHELLA VALLEY
Courtesy TMR
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ALGAE INPUTS (Requirements) AND OUTPUTS (Products)
Light
Microalgae
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Membrane lipids (Polar) Storage lipids (Neutral)
Dr. Qiang Hu, Arizona State University
ALGAL LIPIDS
MICROALGAE ARE MICROSCOPIC AQUATIC PLANTS
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MICROALGAE ARE MICROSCOPIC AQUATIC PLANTSTHAT USE SUNLIGHT AND CO2 TO CREATE BIOMASS
ALGAE CAN PRODUCE MUCH MORE BIOFUEL PER ACRE THAN LAND CROPS
Ethanol Biodiesel
High Biomass Yields Require only Sunlight, CO2 & Nutrients for Growth
Potentially Very High Lipid Yields CO2 Neutral and Eligible for Carbon Credits
Can Utilize Low Quality Fresh or Saline Water Potential for Recycling Valuable Nutrients
Can Utilize Low Quality Non-Arable Land Potential for Valuable Co-Products
A VARIETY OF PROCESS OPTIONS HAVE BEEN PROPOSED
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Cold HexaneExtraction
SupercriticalFluid
Extraction(CO2)
High PressurePulsing /
Sonication /Electroporation
SoxhletHexane
Extraction
Oil Extraction
Roller PressCrushing
Step 4
ManagedNatural WaterBodies and
Static Ponds
Photo-bioreactors
(PBRs)
Light Diffusionand
Fiberoptics
Technology
High RateOpen Ponds
Algae CultureHybrid System
(High RatePonds + PBRs)
Step 2
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A VARIETY OF PROCESS OPTIONS HAVE BEEN PROPOSEDFOR THE PRODUCTION OF ALGAE-BASED BIOFUELS
Allow Wild
Species toDominate
Use BiologicalControls to
MinimizeCompetitors
Use Genetically
Modified AlgaeStrains (GMO)
Select StrainsOptimal for
LocalConditions
Strain SelectionManipulate
Environment toMinimize
CompetitorsStep 1
Kent BioEnergy Process
MechanicalCentrifuge or
Filtration
ChemicalFlocculation
ElectricalFloatation
(DAF)
BiologicallyEnhanced
Settling
Algae HarvestBiologicalHarvest &
Conversion
Step 3
Cost
KENT BIOENERGY PROCESS FOR ENERGY
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KENT BIOENERGY PROCESS FOR ENERGYAND CO-PRODUCT GENERATION IN
CEP MICROALGAE SYSTEMS
KBE TECHNOLOGY HAS MARKET APPLICATIONS IN
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KBE TECHNOLOGY HAS MARKET APPLICATIONS INPOLLUTION CONTROL AND BIOMASS PRODUCTION
CRITERIA FOR LOCATION OF FULL SCALE COMMERCIAL SITES
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Rainfall
Temperature
CRITERIA FOR LOCATION OF FULL-SCALE COMMERCIAL SITES
Cloud Cover
Optimal U.S. Locations
- existing KBE site
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ALGAE CULTURE ACTIVITIES IN THE IMPERIAL ANDCOACHELLA VALLEYS
Kent BioEnergy
Earthrise
SunEco Energy
Carbon Capture
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CONCLUSIONS
ALGAE CULTURE DOES NOT COMPETE WITH FOOD PRODUCTION
NON-ARABLE LAND LOCATED IN ARID CLIMATES
EXPOSED PLAYAS AND REDUCE FINE DUST IRRITANTS
NON-POTABLE WATER (WASTEWATER, BRACKISH, SALINE)
USE OF WASTE NUTRIENTS (ORGANIC) AGRICULTURAL & MUNICIPAL
REMOVES POLLUTANTS AND RESTORES VALUABLE HABITAT
RECYCLES CARBON DIOXIDE & MITIGATES GHG EMMISSIONS
PRODUCES MANY VALUABLE PRODUCTS, INCLUDING BIOFUELS
PROVIDES NEEDED JOBS IN THE VALLEY
STIMULATES LOCAL COMMERCE
IS ELEGABLE FOR GOVERNMENT GRANTS
a) Water reclamation
b) Habitat restoration
c) Renewable energy
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DISCUSSION
Kent BioEnergy Corporation
11125 Flintkote Avenue, San Diego, CA 92121(858) 452-5765 www.kentbioenergy.com
ALGAE BIOMASS REQUIRE MUCH LESS
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2010 CONFIDENTIAL
ALGAE BIOMASS REQUIRE MUCH LESSAGRICULTURAL LAND THAN TERRESTRIAL CROPS
All US Agriculture All Corn
All Soy
To make all US diesel from soy
To make alldiesel frompalm oil
To make alldiesel from
algae
Replacing all diesel usage in the USwith renewable algae-based biodieselwould require about 8 million acres ofproduction, about the size of the USsorghum farming industry.
Total US area:2.3 billion acres
Total farm area:0.9 billion acres