WASTE-FREE TECHNOLOGY OF CHLORELLA SOROKINIANA MICROALGAE BIOMASS USAGE FOR LIPIDS AND SORBENTS PRODUCTION

  • Nataliya А. Politaeva Saint Petersburg State Polytechnical University named after Peter the Great
  • Irina V. Atamanyuk Hamburg University of Technology
  • Yuliya А. Smyatskaya Saint Petersburg State Polytechnical University named after Peter the Great
  • Tatiana A. Kuznetsova Saint Petersburg State Polytechnical University named after Peter the Great
  • Toumi Amira Saint Petersburg State Polytechnical University named after Peter the Great
  • Pavel B. Razgovorov Ivanovo State University of Chemistry and Technology
Keywords: microalgae Сhlorella sorokiniana, lipids, fatty-acid content, Omega-3, sorbents, wastewater purification

Abstract

In the present article we introduce application areas of Сhlorella sorokiniana microalgae biomass for national economy (feed and biologically active additives, etc). Here it is shown that thermal and chemical modification of plant material waste might result in obtaining of highly-efficient materials for water purification. Major stages of waste-free technology of microalga processing with further extraction of valuable lipids and obtaining of sorption materials are schematically shown. We have determined fatty-acid content of lipid fraction (77 mg/g), obtained by Soxhlet method from lyophilized microalga biomass. It was revealed, that it includes 83.7% of unsaturated fatty acids (generally, С18:1, С18:2, С18:3), whereas saturated fatty acids are mostly presented by С16 – С20 family. In lyophilized biomass we discovered α-linolenoic acid (Omega-3, 28.3%), which is one of the most valuable biologically active compounds, required for full-value human life and activities. Microstructure analysis of residual biomass of C. sorokiniana microalgae has shown pore surface, formed by destroyed cells. In the course of studying the sorption properties of residual biomass with the use of initial and final concentration parameters, the efficiency of purification of model water from Fe3+ ions (47.5%) was evaluated, which indicates the need to modify the sorption properties of biomass. It has been established that the degree of wastewater purification containing iron (III) compounds can be significantly increased (by 1.8 times) by forming from the residual biomass granular materials with additional introduction of chitosan in the composition, which using as a binder and a modifying additive (mass ratio 4:1).

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Published
2018-12-12
How to Cite
PolitaevaN. А., Atamanyuk, I. V., SmyatskayaY. А., Kuznetsova, T. A., Amira, T., & Razgovorov, P. B. (2018). WASTE-FREE TECHNOLOGY OF CHLORELLA SOROKINIANA MICROALGAE BIOMASS USAGE FOR LIPIDS AND SORBENTS PRODUCTION. ChemChemTech, 61(12), 137-143. https://doi.org/10.6060/ivkkt.20186112.5795
Section
ECOLOGICAL PROBLEMS of Chemistry and Chemical Technology

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