|
Geva Foods (Pty) Ltd
Manufacturing, Marketing and the Distribution of the Geva F Series. An advanced food formula with many health benefits.
Geva Foods is licensed to Manufacture, Market and Distribute the Geva F Series an advanced food formulation and the Geva T Series, a range of 300 mg Tablets of Geva Arthrospira Platensis (Spirulina Platensis) which is produced and harvested at Spirulina Farms SA (Pty) Limited in Cato Ridge
Product training is essential and product training is given by Geva Foods (Pty) Ltd at its offices in Wynberg, Johannesburg, Gauteng.
Geva Technologies (Pty) Ltd.
The technology for the commercial production of micro algae (in vitro) is owned by Geva Technologies (Pty) Ltd. The technology presented here and our recommendations are based on practical experience and up-to-date research results. Thus, our management team has the know-how and expertise to operate a commercial plant for the mass production of micro algae successfully for the use in both human and animal diets either as a wholefood or supplements. Further development in cell-line extraction is currently in the design stage and is geared to be fully developed in a few years time.
The scope of this company also covers a mature state of the art algae biotechnology production facility for the purpose of bio-fixation of CO2.
The development of practical micro algae bio-fixation of CO2 and greenhouse gases abatement requires multidisciplinary research and development approaches. Geva Technologies is actively working and collaborating with other organizations in this innovative technology.
This millennium will set new demands for protein production at lower costs and reduce environmental impact at the same time. Ecological problems have become more severe primarily because of the steadily increasing CO2 emissions from fossil fuel.
Mankind is just beginning to recognize both the necessity and increasing urgency to reduce emissions of fossil fuel derived greenhouse gases, principally CO2. The Kyoto protocol is an example of this commitment to reduce greenhouse gases.
Bio-fixation of CO2 by micro algae, especially as an option for the utilization of fuel gases from power plants, has been the subject of intensive investigations in the USA, Japan and Europe (Chang & Yang, 2003)
The Concept:
Photosynthesis is the key to making solar energy available in useable forms for all organic life in our environment Micro algae are extremely efficient solar energy converters (among the most productive organisms on the planet) and they can produce a great variety of metabolites
Micro algae are remarkable and efficient biological factories capable of taking a waste (zero-energy) form of carbon (CO2) and converting it into a high-density organic form of energy.
Thus, the concept of coupling a coal-fired power plant with an algae farm provides an elegant approach to recycle of the CO2 from coal combustion into a useable product.
However, direct use of flue gas reduces the cost of pre-treatment, but the high concentration of CO2 and the presence of SOx and NOx inhibit the growth of Cyanobacteria and micro algae.
Facility
A 2-hectare facility is proposed to demonstrate the technical and economic feasibility of micro algae cultivation in closed photo-bio-reactors (PBR) for fixation of waste CO2 and CO-production of high value products.
A closed PBR system is recommended because the CO2 and other gases can effectively be controlled and the losses are almost zero, whilst the losses from an open pond system are high
Photo-bio-reactor:
Photo-bio-reactors are a brand new platform technology to closely control environmental parameters (light, temperature and pH). The critical design requirement in these photo-bio-reactors is to supply light efficiently by maximizing the illumination surface-to-volume ratio of the reaction. As a result, tubes are often very narrow or the panels very thin, because sunlight penetrates only a few centimeters into a mature and homogeneous culture of algae.
Generally tubular systems are arranged in a horizontal serpentine form and made of glass or plastic tubes. The culture suspension is re-circulated either by a pump (centrifugal or peristaltic pumps) or more preferably - by airlift technology. An air flow of 2.5 ℓ air ℓ-1 culture suspension min-1 resulted in the highest output rate.
Closed reactors have a number of advantages
Ø Low CO2 losses, Reduced risk of contamination, Temperature regulation,
Ø Controlled hydrodynamics, Reproducible cultivation conditions,
Ø Higher flexibility with regard to environmental influences,
Ø Significantly smaller space requirements.
Closed type, glass tube basis photo-bio-reactors inside greenhouses
Vertically arranged horizontal running glass tubes (Æ 4.2 cm).
The reactor is sealed (closed system), facilitating successful maintenance of continuous, monoalgal cultures and production throughout the year.
Organism, Cyanobacteria (Spirulina sp.);
24h production with artificial lighting during night
Harvesting daily, filter approximately x-factor % of total volume
Location: adjacent to power plant.
Price: R200 million
Return on investment 3 - 4 years
The debacle of the production of bio-fuel by De Beers Fuel (Pty) Limited and the claims thereof are not supported by Geva Technologies (Pty) Limited. No member of the Geva scientific team are associated with De Beers Fuel (Pty) Ltd. The fiasco and negative response to bio-photo-reactors created by De Beers Fuels (Pty) Limited has no scientific bearing as to the efficiency of production of a high quality alga and the efficiency of Bio-fixation of CO2 by micro algae in such a system.
|
