Design of an autonomous system for studying algae under conditions close to natural

A.S. Gulin, R.P. Trenkenshu

The A.O. Kovalevsky Institute of Biology of Southern Seas of RAS,

RF, Sevastopol, Nachimov Av., 2

E-mail: gulins_gent@mail.ru

DOI: 10.33075/2220-5861-2021-2-66-71

UDC [579:582.26/.27]:581.143:535.34/.35

Abstract:

   In this work, an analysis was made of the relevance of the cultivation of microalgae. Since microalgae have a short growth cycle, and production does not require large costs: they only need water, sunlight and nutrients to grow, they do not occupy fertile lands, there are no seasonal restrictions, it was concluded that microalgae are of interest as an object of mariculture.

   The paper outlines the main problems that arise when conducting research on microalgae directly in the field (in a reservoir) and substantiates the task of developing an autonomous system for researching algae in conditions close to natural.

   For the implementation of the tasks, a project of a mobile installation is proposed, the main advantage of which is the possibility of using it in the field when organizing expeditionary work. The use of the installation will make it possible to study microalgae cultures in conditions as close as possible to natural ones. During the development of the project, the main requirements for the installation were formulated, namely: light conditions, gas supply and mineral components of the nutrient medium.

   In the presented project, a list of systems required for a stand-alone installation was determined, as well as requirements for them. A block diagram of an autonomous system has also been developed, which allows us to consider the principle of operation of the device.

   Based on the results of this work, it was concluded that an optimal design was proposed that provides control of the main parameters of growth and physiological state, as well as the ability to easily control them.

   Distinctive features of this system are mobility, design reliability and availability of repair, as well as low cost.

   Using the installation in expeditionary conditions will allow you to quickly obtain data on the growth of various species and strains of microalgae, without leaving the reservoir, and in the absence of laboratory conditions.

Keywords: automatic control system for microalgae growth, cultivator, hemostat, photobioreactor, optical density measurement

To quote: Gulin, A.S., and R.P. Trenkenshu. “Design of an Autonomous System for Studying Algae Under Conditions Close to Natural.” Monitoring Systems of Environment no. 2 (June 24, 2021): 66–71. doi:10.33075/2220-5861-2021-2-66-71.

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