Cyanobacteria in Brno could get rid of water poison, they can’t handle them

Scientists have shown that cyanobacteria covered with a semi-conductor coating can be an innovative and perhaps cheap way to get rid of uncertainties that are not removed by normal procedures. In addition, they could find and put to use.

Cyanobacteria, or bacteria with oxygen photosynthesis, have been on Earth since ancient times. It appeared especially shortly after the beginning of earthly life, it spilled billions of years and today it is vudyptomn. also in the waters and in the fresh waters, on the tree, on the walls of the house and on the holy ridges of the highest mountains.

The first cyanobacteria is largely due to the fact that the Earth’s atmosphere is full of oxygen. It is formed as a waste during oxygen photosynthesis, with the help of which cyanobacteria produce organic matter from sunny zen and carbon dioxide. They function as a powerful cell plant powered by the sun, and we dream of doing so in biotechnology.

Philippe’s trainer from the Swiss Federal Research Laboratories EMPA (Eidgenssische Materialprfungs- und Forschungsanstalt) and her collaborators glued spirulina cyanobacteria to a fiber with a special surface to act as photocatalysts and produce biofuel at the same time.

The researchers chose spirulins because of their distinctly spirulite shape, which contributes to the highly effective use of sunny women. They are so spiral that under a microscope they resemble some neat pieces from a miniature device.

Spirulins are naturally found to be found in tropical and subtropical lakes with sedimentary water, where there is a high content of carbonate and bicarbonate. In the daytime, her spirulina is grown in large numbers. In Japan, for example, they make vitamin supplements from them because they contain a number of different vitamins. Thus, they contain a known amount of protein. They have a high nutritional value and are easy to grow in large volumes.

Put them in brnn

How to make bionick spirulina? The researcher first coated spirulin beeches with a very thin layer of nickel. Then followed by a slight layer of zinc oxide and nanostic zinc sulfide. The cell surface of the spirulins thus played the role of a structured substrate on which these layers were deposited.


Images from another biotechnological experiment from 2014, in which spirulina leaders coated a metal layer and made microscopic conduits from them.

The nickel layer is magnetic, which is known to facilitate the handling of spirulins, or a magnetic field can be used to do so. The next layer with zinc has a strong and long-lasting photocatalytic activity, which is due to the presence of two zinc compounds.

A great advantage of bionic cyanobacteria is that they can use the spectrum of electromagnetic women, which is not usual in similar cases. If only zinc oxide were used in this way, bionic spirulins would use only the ultraviolet region of sunny women for photocatalysis.

However, due to the ingenious structure and use of zinc sulfide nanostrugs, cyanobacteria treated in this way can use a wide range of spectra. Their photocatalytic activity can be linked, for example, to the decomposition of polluting substances in the environment. As Philippe says, on the spirulins involved, it would be possible to base, for example, a long-term sustainable, simple and, most importantly, inexpensive procedure for water supply.

Since 2015, the management of the UN Global Sustainability Agenda has been available and sustainable. As part of this program, EMPA laboratories are developing technologies that can provide drinking water around the world using existing water treatment plants. Their main goal is to remove microplastics and persistent organic pollutants (POPs) from water, which conventional water treatment systems cannot handle.

The EMPA team used a modified photocatalysis based on a combination of zinc oxide and zinc sulphide. It is a chemical reaction driven by light, which oxidizes and neutralizes polluting substances after exposure to sunlight.

The researcher originally developed this photocatalytic zinc surface for artificial nanostructures resembling microscopic ferns (micro- or nanoferr). The architecture of such ferns can very effectively absorb light for the photocatalysis. In the experiments, they first tested different designs of micro- and nanocapradines with different layers of various chemical substances. In the end, the structure with layers of nickel, zinc oxide and zinc sulphide proved to be the most effective for them.


Ukzka kapraovit forms of photoactive material, which was eventually replaced in experiments by spirulins.

However, instead of artificial miniature ferns, they chose spirulins as a base, their structure allows for efficient absorption of light women.

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When the spirulins clean the water, their work is far from done. Compounds with zinc and nickel can be recycled and handcuffed again. At the same time, it is possible to use biomass spirulina and produce biofuel.

It is not just about bioethanol and biodiesel. The spirulina mass can be processed into pellets, which can then be burned to obtain energy. Ash from such incinerators can also be used, which can be used as a fertilizer for growing new generations of spirulina or other photosynthetic organisms.

A remarkable advantage is that spirulina does not have to be produced. They are alone. All they need is water, sunny zen and nutrients. When spirulina has it all available, it multiplies at a very fast pace. At the same time, they absorb carbon dioxide from the atmosphere and release oxygen, improving the ratio of these substances to great benefit. As it seems, cyanobacteria like you spirulina could become the basis for a new type of energy and economy.