Світловий спектр при вирощуванні спіруліни

Authors

  • І. М. Голодний

Abstract

COLOR SPECTRUM AT CULTIVATION SPIRULINA

I. Golodnyi

 

Photosynthesis and growth of algae depends on the following main factors: light, gas and mineral nutrition, pH value and temperature. Photosynthetic microorganisms cultivated with several important features. Chief among them is related to the specific absorption cells рhotosynthesis -active radiation (PAR), which is characterized by heterogeneity both in intensity and spectral composition by radiant flux affecting the cell suspension and periodic variations in these parameters when illuminated mixing layer suspension.

Energy Efficiency Indicator microalgae cultivation process is defined as the energy efficiency рhotosynthesis cells.

It can be divided into efficiency actually photosynthesis, ie reactions that lead ultimately to the photon energy savings and efficiency of these products for biological oxidation, the process of breathing.

From the literature method known theoretical estimates maximum values of photosynthetic efficiency of plants.

The purpose of research - efficiency cultivation of spirulina algae.

Materials and methods of research. The study of the absorption spectrum of algal suspensions were conducted using a colorimeter KFK-2 computer statistical analysis of experimental data.

Results. When considering lighting modes that are stored in the suspension of microalgae in their different spectral irradiation streams, found that clear boundaries рhotosynthesis active radiation is not defined. Most scientists believe the limit PAR spectral range of 380 ... 710 nm. Power microalgae property determined by the composition and concentration of pigment cells. Absorption spectra suspension microalgae have distinct absorption band in blue and red borders. Therefore, the weakening of light that penetrates the depths of the suspension is uneven.

In conditions of continuous cultivation of spirulina algae suspension at 32 ... 36 0C; The pH of the culture medium 8 ... 10 units maximum speed of cell growth achieved in the light E0 = 100 ... 200 W / m2 PAR. With further increase its growth rate decreased.

Absorption spectra suspension spirulina, chlorella similar suspensions have pronounced absorption band in blue and red borders.

Conclusions

When illuminated with white light spirulina and other algae that are found at depths cells f рhotosynthesis practically the green light, and on the surface - blue and red, it is important to know when choosing bulbs of certain spectral characteristics of exposure to particulate matter.

References

Белянин В. Н. Энергетика фотосинтезирующей культуры микроводорослей / В. Н. Белянин, Ф. Я. Сидько, А. П. Тренкеншу. – Новосибирск : Наука, 1980. – 136 с.

Прикупец Л. Б. Оптимизация спектра излучения при выращивании овощей в условиях интенсивной светокультуры / Л. Б. Прикупец, А. А. Тихомиров // Светотехника, 1992. – С. 5–7.

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Published

2017-02-24

Issue

No. 242 (2016)

Section

Статті

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