Conditioning and utilization of СО2 from fermentation industries for the cultivation of microalgae
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2020-09-22 13:55
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COVALIOV, Victor; COVALIOVA, Olga. Conditioning and utilization of СО2 from fermentation industries for the cultivation of microalgae. In: Ecological and environmental chemistry 2017The 6th International Conference. 2-3 martie 2017, Chișinău. Chisinau, Republic of Moldova: Academy of Sciences of Moldova, 2017, p. 153.
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Ecological and environmental chemistry 2017 2017
Conferința "Ecological and environmental chemistry 2017"
Chișinău, Moldova, 2-3 martie 2017

Conditioning and utilization of СО2 from fermentation industries for the cultivation of microalgae

Pag. 153-153

Covaliov Victor, Covaliova Olga
State University of Moldova
16.80013.5807.11/Ro Sisteme microalgale utilizate pentru reducerea emisiilor de CO2 de la fermentatia biomasei
Disponibil în IBN: 14 martie 2019


Carbon dioxide emissions are known to be among the main sources of climatic changes on Earth. СО2 emissions from the fermentation processes are not considered as important atmospheric pollutants, however, its high emitted contents become more obvious. Meanwhile, carbon dioxide may become an useful product in many spheres of economy. Fermentation processes, as well as the systems of anaerobic biomass digestion for biogas production are the main emission sources of carbon dioxide. Biogas emissions contain up to 20-50% СО2. Its presence in the biogas composition reduces its caloricity in the production of heat and electric energy. The annual СО2 emissions from the wine-producing sector in Moldova is responsible for over 500 bln. m3 emissions. This amount includes the carbonic acid emissions from bioethanol production for motor transport. At the same time, СО2 can be utilized in the production of liquid or dry carbonic acid or fertilizing mixtures, or other scopes. Still, the share of utilized gas does not exceed 2-3% of the overall produced amount. There are also non-traditional utilization ways of carbon dioxide, among them year-round cultivation of microalgae for growing of protein biomass. Under photo-synthetic conditions, protein contents in the micro-algae of spirulina type (Spirulina platensis) and/or duckweed (Lemna), and/or chlorella (Chlorella pyrenoidosa) makes up to 70%, making them the valuable forage additive for animals [1]. For illumination, the energy-saving LED lamps with white flow with 1000-2000 Lumen can be used, or 5G LED GROW lamps with red light with the wavelength λ=660 nm and blue light with λ=470 nm. For the further improvements of this technology a series of innovative approaches have been proposed, including the gases purification and conditioning systems, integrated reactors and other solutions [2, 3], which contribute to the development and broader application of this technology.