Source: Dyussenov, K. M., Dyussenova, J., & Nedugov, I. (2013). The Using of Controlled Cavitation Processes in Some Engineering and Agricultural Applications. Universal Journal of Engineering Science, 1 (3), 89-94.
The article, “The Using of Controlled Cavitation Processes in Some Engineering and Agricultural Applications” is probably the worst scholarly article ever read. It’s as if someone just wrote the article in another language and then used Google Translate. That is on top of the fact that I don’t believe in any of the data. It’s on the edge of pushing water structuring psuedo science (water structuring is a real thing, but there is no real data to support that you can keep water structured without some constant influence like an electric field or ultrasonic waves.
They suggest that after an ultrasonic treatment that the water is structured differently and thus increase the yields in their plants. While there may be some real benefits, (disinfection, better mixing of metals, etc) it’s laughable to suggest that cavitation can cause nano-structuring for a lasting period of time.). If you’ve ever heard of China making fake science articles to increase publications and thus “legitimacy”, this is it.
Read with caution. The water heating part I mostly trust (besides the pH impact, they state the Venturi nozzle decreases pH by up to 15%).
Review of Publication:
Hydrodynamic and ultrasonic cavitation have wide uses from medicine, naval applications, chemical technologies, cosmetics, and more. The thermodynamics behind hydrodynamic cavitation give rise to the complex effects of cavitation. It leads to sono-luminescene, water ionization, extreme mixing, de- aeration, and structural changes in the water.
Hydrodynamic cavitation also can be used to heat water, make mixes of biodiesel and ethanol, and be used as a disinfectant.
Its use as a disinfectant and ability to nano structure water, can help in the growth of various plants, as shown later in this paper.
One way to use cavitation as a heat generator is to use a Venturi nozzle with a fragment to help mix the flow. The flow reduces in pressure as it gains fluid velocity and under goes cavitation.
The heat given off by these nozzles is evenly mixed due to the fragment and these nozzles can heat fluids with up to 98% efficiency. They also don’t require an electric or flame heat source which increases safety when in use in the preparation of fuel.
These types of heat generators perform as reliably as the motor and pump that directs the flow.
When using a Venturi nozzle to induce hydrodynamic cavitation in water being used to irrigate pine trees, there was a seen increase in their resistibility to pathogenic micro flora.
The water itself saw a decrease in conductivity from 18 to 23 percentage along with an decrease in the pH by 25 to 35 percentage.
Water then used in the growing of tomato and rose plants were then treated with a piezoeletric converter. This used ultrasonic frequencies to cause cavitation in the water. Frequencies between 20 and 50 Hz and 20 and 50 kHz were investigated.
20 kHz seemed to be the best way to treat the water.
It increased productivity of the tomato plants by up to 15 percentage and increased the root systems of the roses by up to 40 percentage.
These values correlated with an increase in the plant’s content of copper by 52 percentage, zinc by almost 70 times, tin by almost 8 times and cadmium by 3.9 times.
The 20 kHz treated water showed an increase in acidity by 1.14 to 2.01 percentage and the 50kHz saw an increase of 3.28 percentage.
These differences were attributed to the ultrasonic cavitation causing partial ionization of the water and causing molecular structuring.
There was also an increase in the how long the plants lasted under the 20kHz treatment.
It is suggested that the ultrasonic radiation can influence the physical and chemical properties of the water to some extent.
Biotechnology could also use cavitation to attack certain issues caused by hydrophilic and hydrophobic structures due to it’s high mixing.
It is suggested due to the low power consumption and reliability, that if these water treatments were taken into the field, a large increase in productivity could be seen.
End of publication review.