Spirulina Program LOGO
  CFPPA-HYERES Spirulina Training Program

"spirulina WORLD program"
CFPPA , 32 chemin St Lazare 83400 Hyéres - France


8 - systems for culturing Spirulina -


Artisanal Farm
Medium size Farm
Mass production Farm
We have seen that there are three principal categories of systems for culturing Spirulina: small artisanal plastic basins; larger plastic or concrete basins with more efficient stirring mechanisms, light and temperature control when covered by a "greenhouse", and carbon-dioxide addition; or very large basins with sophisticated turbulence-producing devices, venturi micro-bubble carbon-dioxide injection systems, and state of the art nutrient programming and supply. The choice depends on the number of people in emergency, the cIimate, the availability of flat land, of water, of the necessary chemicals, of construction materials, of electric power, of technically trained personnel, of finances, and any speciaI constraints imposed by geographical or cultural factors or traditions. You notice that I don't even speak about closed photobioreactors -systems wherein the culture is pumped through plastic or glass tubing - as they are not options for low cost production of large quantities of Spirulina biomass.
It is useless at this point to present detailed cost estimates for the three categories of production systems. One can give only the cost ranges of certain existing facilities. The reason is that from one country to another the cost of land, water, materials, labor, etc.. varies considerably - sometimes by a factor of 2 to 4; and that today's prices very rarely are tomorrow's prices.
For example, in 1998, both plastic (on wood frames) and concrete basins of 31 m² were constructed in Burkina Faso - complete with paddlewheels and electric drive - for approximately $ 1650 and $ 3025 respectively. Extrapolating, a 100 m² plastic basin would cost $ 5325, while in concrete it would cost $ 9760. A 10 m² basin consisting of plastic film placed over earthen side walls and stirred by an aquarium water pump could cost around $ 50, pump included.

Attention !
If the land where one wants to build a Spirulina basin is full of termites, plastic construction is not recommended, for the termites can make sizeable holes in the plastic. One must use concrete, or bricks or stones covered wlth cement.
If the requirement is to furnish Spirulina for 1000 children, you can do this with several small basins or with one of 1000 m². Here leveling is more important, for when the water depth is only between 20 and 10 centimeters, a little "off level" in 50 or 100 meters can leave part of the raceway high and dry, which would shut down the whole system.
Without considering cost for land, taxes, water, or labor, the construction cost plus the chemicals and power for the first year's operation I estimate at about $ 22,000 - which amounts to $ 22 per child. Of course, this price comes down considerably when one takes into account the fact that it wiIl not be necessary to feed the same child the full dose of Spirulina the entire year .This brings the price down around $ 4 per child. During the second and following years the construction costs wilI be replaced by much lower maintenance costs, so even with the cost of personnel included, the cost per child should drop from $22 to $6; and, using the same time schedule for the children's recovery, the price per child would be around $ 1.
For one hectare size farms, without considering cost for land, taxes, water, or labor, I estimate about $93,000 for construction and first year operation - which amounts to about $9 and thirty cents per child year or about $1.55 per child year .
These figures are meant only as cost guidelines. Every Spirulina farm is a special case - especially after about 25 or 30 m² in size. When the required yearly harvest quantity is determined, a detailed study should be made to provide a reasonably accurate cost estimate so as to whittle down the difference between estimated cost and actual cost - for the two never are identical.
The politics are simple: how much does the death of a child cost his family and his country ?
A healthy child has a better chance of absorbing an education and becoming a valued and productive citizen. One sees immediately that healthy children can make a healthy country. A healthy country overcomes its difficulties. A sick country disappears into the sand. Children must not be the last, but the first item on every nation's budget, especially during famine emergencies.

The purpose of the Intergovernmental Spirulina Program - which is part of the Intergovernmental Institute for Cooperation in Scientific Research - with its offices in Italy and France - is to inform governments (and individuals too) and interest them in growing Spirulina to improve their nutrition and health in emergency cases.
We offer guidance in planning your Spirulina Program and open doors to the financing of your projects.

mutichannel basin system
Multi-channel Basin
A multichannel basin

A mutichannel one-hectare basin system requires four 12-kilowatt motors for operating the paddlewheels. This allows energy for overcoming the resistance of mixing devices placed in the culture flow system.
Using gravity harvesting and raising 1/4 of the culture volume 2.5 meters total height to return the filtrate to the opposite end of the basin requires 0.55 kilowatts for forty minutes. Note that the opposite end of a folded raceway can be just across a dividing wall from the harvesting end. Price of the pump is about $ 600.
Water depth of the culture will be 15 centimeters.

1 Hectare Basin
- Introduction ] CD-ROM Spirulina for Reducing Malnutrition - Historic of the World ]
- SPIRULINA Composition  ]   [  - Texcoco Lake Story  ]
 [ -  
WHERE SPIRULINA is found ] [  - Basins  ]   [  - Photosynthesis ]  
- SPIRULINA Production  ]  [  - Laboratory ]  [  - Harvesting ]
- Mix-drying SPIRULINA ]   [  - Starting ]  [ Problems and Solutions  ] 
[  -
- Why should we grow SPIRULINA ? : for nutrition and health ]
- Public Information-paper on SPIRULINAuseful links ]



WEBMASTER Site'' http://Spirulina.online.fr '' mailto:''Webmaster'' (Updated: November 2005)

écrire au webmestre de http://www.spirulina.info