Pilot Production of Spirulina Biomass and Obtaining of Novel Biodegradable Surfactants

Abstract

The research results describe the pilot production of microalgae biomass – Spirulina, especially in wintertime, using the geothermal energy of water to save the costs for heating of the pool photobioreactor and biomass drying box. For carrying out of the process a simplified nutrient medium consisting of geothermal water and salts: sodium bicarbonate, potassium nitrate, diammonium phosphate, and urea was developed. The conditions for the Spirulina biomass cultivation in wintertime were optimized. The technical and economic feasibility and conditions for large-scale production of Spirulina in Kazakhstan for commercial purposes are justified. It has been shown that the Spirulina biomass may serve as a feedstock for the production of biodegradable surfactants.

Compositions of Arylalicyclic Copolyimide with Alkylated Monthmorillonite

“…[8][9][10] Composite materials based on polyimides acquire improved characteristics at a relatively low concentration of the modifying compound. 10,11 At the same time, there are data on the use of polyimides with an alicyclic structure to obtain polymer compositions with a high level of technical characteristics. 12,13 Modification of the initial copolyimide with montmorillonite particles makes it possible to expand the field of application of composite materials based on it in such promising industries as micro-and nanoelectronics, electrical engineering, integrated optics, as well as in other optical technologies as products with unusual photosensitive, magnetic, heat-conducting properties, effective and selective catalytic systems.…”