Design of an Aeroponic System for Burkina FasoDesign of an Aeroponic System for Burkina Faso Erin...
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Design of an Aeroponic System for Burkina Faso
Erin Sharkey & Georgia Ernst
April 28th, 2017
1:00 PM
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Mission Statement We believe that all people deserve access to fresh foods
and proper nutrition, and that sustainable agriculture is
the best way to improve food access world-wide.
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What is Aeroponics? • Aeroponic systems use less than
10% of the water and footprint used in traditional growing.
• Aeroponics allows for an extended growing season.
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Client Open Door Development
Matt Walsh Mahadaga, Burkina Faso
Although Burkina Faso has good
soil, lack of access to water during
drought seasons creates a need for
alternative growing methods.
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Specifications May 2017 Implementation:
• $500 System Budget
• Solar Powered
• (Mostly) Manufacturable in-country
• Minimize Overall Cost
• Electricity-free
• Manufacturable in-country
Future Implementations:
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History of the Aeroponics Project • Commercial Systems → Developing Contexts
• Individual Systems → Small Business Systems
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Concept Tower Body:
A - Tower
B - Trough and Cap Assembly
C - Tower End Cap
Pumping System:
D - Reservoir (contains pump)
E - Assorted Piping
Superstructure:
F - Primary Portion of Superstructure
G - Secondary Portion of Superstructure
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Concept Adjustment
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Goals of Project in 2017 Implement a two tower system in Burkina Faso during May 2017
• Fabricate one complete prototype
• Finish a pattern template to assist in drilling
• Create a quantitative testing procedure for the nutrient source
• Prepare for site team visit
Answer the following questions:
• Is the cost of the total system feasible for our current clients?
• Is it possible to provide all nutrients through a non-chemical source?
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Analysis of a Growth Cycle Commercial versus Modified Aeroponic
Tower Growth:
• Same nutrient source
• No access to a greenhouse
• Poor growing environment
• Low success rate of plant growth
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Current Trough Design Revisit current trough
design
• Pooling
• Too small for
enclosement and
security
• Design needs to
retain moisture • Utilized 1 ⅜” outer diameter [OD] drain
pipe and experienced failure
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Design Alternatives Larger Troughs versus Angled Cups
• Larger troughs (2 ⅜” od schedule 40 pipe)
• Angled cups (made from 2 ⅜” od schedule
40 pipe)
• Cut at 45 degrees to maximize product
per unit of material
After flow testing and experimentation, both
designs seem feasible for future systems.
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Tower Template Design
Six column spiral design allows for 18 plants per 1 meter tower.
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The Nutrient Source Macronutrients:
• Nitrogen (N)
• Phosphorus (P)
• Potassium (K)
Possible Sources:
• Compost Tea
• Manure Tea
• Worm Casings
• Powdered Supplements
Image: Team member straining compost tea
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Quantitative Testing & Nutrient Sources Procedure for On-Campus Testing
• Created with help from Dr. Shaeffer of the Chemistry Department
• Utilizes a Spectroscope to create calibration curves
• Studies metals: Iron, Magnesium, etc.
Procedure for Burkina “Testing Kit”
• Buret & titration based analysis
• Doesn’t necessarily differentiate between nutrients available to plants and nutrients in solution.
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Implementation in Burkina Faso - May 2017 • Meeting client and community
• Metal structure assembled pre-arrival
• Powdered nutrients used in first implementation
• Soil testing and analysis
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Conclusion • The spacing between plants has been finalized, and we have a template
to use in Burkina Faso.
• After revisiting the trough design, we have a cup that both preserves water and does not overflow.
• We now have a nutrient testing method to be used on campus, and are in the process of working out a more portable test to bring to Burkina Faso.
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The Future of Aeroponics
• Visit & implement in Burkina Faso
• Continue testing and refining the nutrient source
• Refine the system & components based on results in Burkina Faso
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Acknowledgements Professor Michelle Lockwood
Dr. David Vader
Prof. Erikson
Nick Noss
Andy Erikson
Erin Kelly
Matthew Brenneman
Landon Hacker
Karina Ayala
Rebecca Lauver
The Collaboratory’s Staff &
The Messiah College Engineering Department
Thank you all for your time and support!
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Questions?
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