What chemical changes can ultrasonic sonochemical equipment play?
As a physical means and tool, sonochemical treatment technology can generate a series of extreme conditions in the chemical reaction medium. This energy can not only stimulate or promote many chemical reactions, speed up chemical reactions, and even change certain conditions. The direction of these chemical reactions produces some unexpected effects and miracles, which is sonochemistry. Sonochemistry can be applied to almost all chemical reactions, such as extraction and separation, synthesis and degradation, biodiesel production, treatment of microorganisms, degradation of toxic organic pollutants, biodegradation treatment, biological cell crushing, dispersion and aggregation, etc. Another outstanding advantage of ultrasonic sonochemical equipment is that it has no moving parts, no electromagnetic radiation, and is very simple to install and fix. It is especially suitable for applications in high-pressure, high-temperature, toxic, and explosive environments. Another application of ultrasonic sonochemical equipment is in the field of sewage treatment and scale prevention and descaling. Many experts and scholars have done a lot of research and experiments, which prove that ultrasonic is very effective in anti-scaling and descaling of pipelines and equipment.
Ultrasound has been widely used in industrial manufacturing industries, such as common ultrasonic welding machines, ultrasonic plastic welding machines, ultrasonic cleaning machines, etc. The propagation laws of ultrasonic waves in the medium, such as reflection, refraction, diffraction, and scattering, are not essentially different from the laws of audible sound waves. But the wavelength of ultrasound is very short, only a few centimeters, or even a few thousandths of a millimeter.
The action of the ultrasonic wave of the ultrasonic welding machine can promote or accelerate certain chemical reactions.
1. Pure distilled water produces hydrogen peroxide after ultrasonic treatment;
2. Water dissolved in nitrogen produces nitrous acid after ultrasonic treatment;
3. The aqueous dye solution will change color or fade after ultrasonic treatment.
The occurrence of these phenomena is always accompanied by cavitation. Ultrasound can also accelerate the process of hydrolysis, decomposition and polymerization of many chemical substances. Ultrasound also has a significant impact on photochemical and electrochemical processes. After ultrasonic treatment of aqueous solutions of various amino acids and other organic substances, the characteristic absorption bands disappear and show uniform general absorption, which indicates that the cavitation has changed the molecular structure.
