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Plasma Activated Water Treatment

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How to disinfect, sterilize and control microorganisms in cultivation irrigation water systems

Soilless cultivation is an advanced agricultural production method. Its core lies in using nutrient solutions to replace soil and provide necessary nutrients and water for plants. Artificially regulating the environmental conditions for crop growth, such as temperature, light, water and nutrients, etc., can fully bring out the production potential of crops, increase yield and quality. However, under this cultivation mode, the disinfection and sterilization of the irrigation water system have become a crucial link

1. The occurrence of diseases in hydroponic vegetables

2. The pathways of microbial infection in irrigation water systems

3. The Importance and Methods of hydroponic pipeline disinfection

4. Eddaair：The Importance and Methods of hydroponic pipeline disinfection

1. The occurrence of diseases in hydroponic vegetables

The normal growth of hydroponic vegetables is highly dependent on the quality and management of nutrient solutions. However, in actual production, due to the long-term contact between nutrient solutions and plant roots, the risk of disease transmission has significantly increased. Once pathogenic bacteria invade the nutrient solution, they can spread rapidly among crops, causing serious damage. Common root diseases such as fusarium wilt and bacterial wilt in tomatoes, and blight in cucumbers, are all key targets that need to be prevented in hydroponic vegetable production.

The occurrence of these diseases is often closely related to microbial infection in the irrigation water system. Microorganisms, including bacteria, fungi, viruses, etc., can enter the irrigation water system through various channels, multiply in it, and then infect the root systems of plants. Therefore, effectively controlling the number of microorganisms in the irrigation water system is the key to preventing plant diseases and ensuring the healthy growth of crops.

2. The pathways of microbial infection in irrigation water systems

The pathways of microbial infection in irrigation water systems are diverse, mainly including the following aspects:

1. Water source pollution: The water source itself may carry various microorganisms, including pathogenic bacteria. If not treated or handled improperly, these microorganisms may enter the hydroponic system along with the irrigation water.

2. Pipeline contamination: Irrigation pipelines are prone to accumulate dirt and microorganisms during use. Especially at pipe connections, elbows and other parts, due to the slowed water flow rate, it is easier for biofilms to form, becoming a breeding ground for microorganisms.

3. Improper management of nutrient solutions: During the preparation, storage and use of nutrient solutions, if the operation is not proper, microorganisms may also be introduced. For instance, the use of unsterilized containers, tools or water sources may all lead to the contamination of nutrient solutions.

4. Human factors: During the hydroponic production of vegetables, human operations may also serve as a means for the spread of microorganisms. For instance, if staff come into contact with plants or nutrient solutions without washing their hands or wearing protective clothing, they may bring microorganisms into the system.

 

3. The Importance and Methods of hydroponic pipeline disinfection

In view of the severity and complexity of microbial infection in irrigation water systems, it is particularly important to disinfect and sterilize hydroponic pipelines. Effective disinfection methods can not only kill existing microorganisms but also reduce the formation of biofilms, thereby lowering the risk of disease transmission.

At present, the commonly used disinfection methods for hydroponic pipelines mainly include two categories: physical disinfection and chemical disinfection.

1. Physical disinfection method

(1) Ultraviolet disinfection:   Ultraviolet disinfection is a non-chemical disinfection method. Its principle is to destroy the DNA structure of microorganisms through ultraviolet radiation, thereby achieving the purpose of sterilization. In the disinfection of hydroponic pipelines, ultraviolet lamps can be used to irradiate the irrigation water. However, it should be noted that the sterilization effect of ultraviolet disinfection is influenced by multiple factors, such as the intensity of ultraviolet rays, the duration of irradiation, and the transparency of water quality. In addition, the disinfection effect of ultraviolet disinfection on the interior of pipelines is limited, so it is usually necessary to be used in combination with other disinfection methods.

(2) Ozone disinfection:    Ozone disinfection is a highly oxidizing disinfection method that can quickly kill microorganisms in water. The oxygen atoms produced by the decomposition of ozone in water have a strong oxidizing capacity, which can destroy the cell walls and cell membranes of microorganisms, thereby achieving the purpose of sterilization. However, ozone disinfection also has some limitations, such as poor stability and easy decomposition of ozone; Ozone has certain toxic effects on the human body and needs to be used in a closed environment. The disinfection effect of ozone disinfection on the interior of pipelines is also not as good as that of chemical disinfectants.

2. Chemical disinfection method:

The chemical disinfection method is a technique that kills microorganisms by adding chemical disinfectants to irrigation water.

(1)Chlorine-containing disinfectants: Chlorine-containing disinfectants are widely used chemical disinfectants, featuring excellent bactericidal effects and low cost. However, there are also some problems in the use of chlorine-containing disinfectants, such as the pungent smell of chlorine being harmful to the human body; The decomposition rate of chlorine is relatively fast, and the duration of the disinfection effect is relatively short. Chlorine may react with organic matter in water to produce harmful disinfection by-products, etc.

(2) Hydrogen peroxide: Hydrogen peroxide is an environmentally friendly chemical disinfectant, featuring excellent bactericidal effect and harmless decomposition products. The oxygen atoms produced by the decomposition of hydrogen peroxide in water have a strong oxidizing capacity and can destroy the cellular structure of microorganisms to achieve the purpose of sterilization. In addition, hydrogen peroxide also has broad-spectrum bactericidal properties and can effectively kill a variety of microorganisms such as bacteria, viruses and fungi.

(3) Quaternary ammonium salt disinfectants: Quaternary ammonium salt disinfectants are broad-spectrum bactericides that have excellent killing effects on various microorganisms such as bacteria and fungi. Quaternary ammonium salt disinfectants have the advantages of good stability and low irritation. However, quaternary ammonium salt disinfectants also have some limitations, such as the disinfection effect being affected by the hardness of water quality; Quaternary ammonium salt disinfectants may react with other chemical substances to form precipitates or reduce the disinfection effect, etc.

4. Eddaair：The Importance and Methods of hydroponic pipeline disinfection

In view of the various problems existing in traditional disinfection methods, it is particularly important to find an efficient, safe and environmentally friendly disinfection solution for vegetable hydroponic pipelines. As a new type of hydroponic plant sterilization product, Eddaair has stood out in the hydroponic field with its unique advantages and wide application range.

High-efficiency and broad-spectrum sterilization

Eddaair has a broad-spectrum bactericidal effect and can quickly kill various types of microorganisms such as bacteria, fungi and algae in nutrient solutions and pipelines, preventing the spread and expansion of diseases.

Eco-friendly and residue-free:

After its action, it decomposes into water and oxygen. It is non-toxic and leaves no residue, posing no threat to human health, nor does it pollute the environment or water sources. It has no drawbacks of traditional pesticide residues.

Non-corrosive:

No irritation or harm to plants. It can be safely used for stem and leaf spraying of plants and for disinfecting hydroponic solutions, and it does not cause corrosion to pipelines.

Application scenarios of plasma activated water

1.Applied to wastewater treatment, purification, and odor removal

Chemical wastewater pretreatment; Pharmaceutical intermediates; Pre treatment of pesticide wastewater; Wastewater from aquaculture and food processing; Paper mill wastewater; Pre treatment of printing and dyeing wastewater; Removing odors from outdoor garbage dumps;

Advantages: (COD reduction, decolorization, ring breaking, toxicity relief, improved biodegradability, removal of suspended solids, decolorization, total nitrogen degradation)

2.Applied to daily life, food, and agricultural water use

Swimming pool water body; Water purification plant; Food processing plants; Purification of aquatic products; Agricultural planting industry;

Advantages: (Used for purification, sterilization, disinfection, removal of impurities, promotion of blood circulation in aquatic products, elimination of heavy metals and toxins in the body, ion water supply to plants,

Eddaair PAW

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Bipolar ions, an air purification technology. Solve several problems of cannabis cultivation: odor, mold, mildew, bud rot and disease

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PLASMA AIR DISINFECTION

Eddaair Bipolar Ionizer

A plasma generator is one of the most effective devices for removing marijuana odor from a grow room. They are able to destroy odor particles one by one, as well as any type of fungi or bacteria in the environment. There is a big difference between a plasma generator and an ozone generator. The plasma generator has a very low level of ozone concentration and can be used in a space with people.

Below, we describe the benefits of plasma generators during cannabis cultivation.

Odor Control

Neutralizing odors can seem like an uphill struggle when growing cannabis indoors. When the marijuana plant blooms, it emits a strong, pungent odor that can eventually stink throughout your building; in some cases, it might even end up leaking onto the adjacent block as well. This obviously leads to legal problems. That’s why you need to know the best tips and tricks on how to hide the smell of weed growth indoors.

 

If you want your grow to be as discreet as possible, you’ll need to have a decent air filtration system in place, as well as some sort of anti-odor method to cover, remove, or filter the marijuana smell. We’re going to walk you through some of the best ways you can hide the smell of your marijuana plant indoors, which could save you a lot of pain in the future.

Indoor Air Disinfection

Fungi, like insects, can be harmful or beneficial to cannabis plants. Fungi that are considered pests are those that rot, decompose and damage cannabis plants. They can occur in leaves, roots, stems and flowers. There are many species of fungi that are considered dangerous to cannabis plants from budding to flowering stages and even after harvesting. Mold, fusarium, powdery mildew, and botrytis are some of the fungal pests that attack most indoor cannabis crops.

Hundreds or even thousands of plants in a room, combined with high humidity and a variety of other variables, can create an “explosive growth” of mold, mildew, and contamination issues that can spell disaster for grown crops.

Plasma as a disinfection method has been shown to reduce colony forming units of different types of mold without affecting cannabinoid and terpene concentrations. It doesn’t require heat or outright radiation to kill microbes, making it a natural method of disinfection.

So there is no aspect of mold control is more effective than bipolar ionization, commonly used in grow, cure, and dry rooms. This technology can generate both positive and negative ions. Combined, these ions radically reduce mold spores and bacteria on cannabis plants.

PLASMA AIR DISINFECTION

Product selection

How to choose products? We mainly choose different product types according to the area of your planting area.If you can tell us more details, then we will provide a better professional opinion and recommend the right product.

Potential Applications of Non-thermal Plasma in Animal Husbandry to Improve Infrastructure

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Infrastructure in animal husbandry refers to fundamental facilities and services necessary for better living conditions of animals and its economy to function through better productivity. Mainly, infrastructure can be divided into two categories: hard infrastructure and soft infrastructure. Physical infrastructure, such as buildings, roads, and water supplying systems, belongs to hard infrastructure. Soft infrastructure includes services which are required to maintain economic, health, cultural and social standards of animal husbandry. Therefore, the proper management of infrastructure in animal husbandry is necessary for animal welfare and its economy. Among various technologies to improve the quality of infrastructure, non-thermal plasma (NTP) technology is an effectively applicable technology in different stages of animal husbandry. NTP is mainly helpful in maintaining better health conditions of animals in several ways via decontamination from microorganisms present in air, water, food, instruments and surfaces of animal farming systems. Furthermore, NTP is used in the treatment of waste water, vaccine production, wound healing in animals, odor-free ventilation, and packaging of animal food or animal products. This review summarizes the recent studies of NTP which can be related to the infrastructure in animal husbandry.

Keywords: Animal husbandry, infrastructure, non-thermal plasma, technology, products, review

Animal husbandry, a component of modern agriculture, concerns with the animals that are raised for commodities such as meat, milk, eggs, fur, leather and wool. The well-being of animals in animal husbandry has ethical, scientific, political and aesthetic components which are required for a better animal management, welfare, handling, care and high productivity (1). Infrastructure is one of the major contributors to well-being of animals which usually associates with management issues regarding nutrition, health, transportation, mustering and handling and other special invasive practices (2). Infrastructure refers to the fundamental facilities in an animal husbandry which can be divided into hard infrastructure and soft infrastructure. Hard infrastructure includes systems such as buildings, roads, and water supplying systems. Soft infrastructure consists of cost-effective, health, social and cultural facilities. Therefore, the better management of infrastructure in animal husbandry leads to well-being of animals and higher financial profit through the higher productivity.

Non-thermal plasma (NTP) has been identified as a potential approach to improve the quality of infrastructure systems and facilities including buildings, medications, food, ventilation, water supply, instruments and other special management practices (3–7). NTP is partially ionized matters in gaseous state at low temperatures and energy is mostly stored in free electrons (8). Different devices have been introduced to generate NTP including dielectric barrier discharges (DBD), atmospheric plasma jets, coronas and, surface and microwave discharges for numerous applications in different fields (9). NTP is environment-friendly, free of toxicity and requires a low temperature. These characteristics of NTP do not put animals and environment in animal husbandry at risk (10,11). Therefore, NTP can be considered as an effective potential application to improve infrastructure, without disturbing animal well-being.

In this review, we summarized the already known applications of non-thermal plasma in the infrastructure sector of animal husbandry with regard to the well-being of animals and higher productivity which is necessary for its financially profitable function. We also highlighted the studies about the applications of NTP for improving infrastructure in other fields and hypothesized its use in animal husbandry. However, more systematic research is still required to bridge knowledge gaps particularly on NTP and the infrastructure of animal husbandry.

Role of NTP in Bio-decontamination to Provide a Healthy Environment for Farm Animals

The presence of various micro-organisms such as bacteria, biofilms, fungi, spores of fungi and protozoan parasites and their genes and metabolites in the environment increases the health risks to farm animals by causing and spreading numerous diseases (12,13). Therefore, bio-decontamination of surfaces, instruments and water is necessary in animal husbandry to maintain a healthy environment. Several methods have been introduced for this purpose including oven or autoclave sterilization processes, chemical sterilization such as ethylene oxide sterilization, Gamma irradiation, high hydrostatic pressure technique and microwave sterilization. The limitations of these techniques such as the possibility of chemicals to remain after sterilization, requirement of complex, expensive and high security equipment and the requirement of special conditions for operations have also been discussed (14,15). Therefore, NTP has been suggested as an effective, less toxic and low-cost method for bio-decontamination by several research groups. Also, none of the destructive effects on decontaminated surfaces were detected following NTP treatment (14,16,17). Furthermore, NTP can be used to decontaminate heat-sensitive surfaces and instruments as it is used at room temperature (18).

Commonly, most decontamination techniques target the membrane of a cell as it separates its inner compartments from the environment (14). NTP has general and specific effects on the cell surface of living organisms (14,19-21). In addition to cell membranes (14,22-26), NTP targets DNA (14,24,26,27) and proteins (14,26,28) to destroy living organisms (Table I).

Article from:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6689345/

Focus on disinfection and purification of public transportation

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Urban public transportation as the main commuting method for office workers has gradually regained its vitality. At the same time, in order to prevent the rebound risk of the new crown epidemic and implement the normalization of epidemic prevention and control responsibilities, ensuring the disinfection of public transportation vehicles and places has become the key to current epidemic prevention.

Focus on disinfection and purification of public transportation

Urban public transportation mainly includes bus and subway. As the main force of urban transportation, public transportation has the characteristics of large flow of people, complicated walking, long running time, wide regional distribution, relatively closed space in the car, poor ventilation, and difficult air quality. Be guaranteed. Subways and buses face similar air environment problems, but the traffic of subways is larger and more complicated than that of buses. Once someone in a certain carriage is infected with the virus, it is very easy to cause group infections and even cause public health incidents, with huge potential harm.

Wall mounted disinfection purifier (7)

On the other hand, the current main disinfection methods of public transportation still use traditional manual spray disinfection, which is time-consuming, laborious, and labor-intensive; and because the disinfectant used in traditional manual spray disinfection is highly corrosive, it requires comparison of the proportion of consumer personnel and the grasp of wiping techniques. High, this has also become one of the difficulties of traditional manual spray disinfection.

From core technology to full service

According to medical experts’ recommendations, the new coronavirus is mainly transmitted through droplets, aerosols and contact. EddaAir bus air purifier has developed EddaAir bus air purifier disinfection and sterilization filter technology and plasma disinfection and sterilization technology from cutting off the transmission route. It has been used in Shenzhen’s passenger cars, buses, school buses, and ambulances.

EddaAir bus air purifier dedicated to public transportation to create a safe and comfortable riding space

Compared with traditional public transportation disinfection and purification methods, EddaAir bus air purifier products and solutions have the advantages of high disinfection efficiency, removal of aldehydes and odors, no manual operations, and compatibility with original air conditioning systems. Among them, the plasma tube can produce positive and negative ions, destroy the cell structure, thereby killing bacteria and viruses;

The plasma in EddaAir bus air purifier plasma sterilization technology can directly break molecular bonds to achieve the purpose of sterilization and air purification. The bacteria kill rate is as high as 99%, and it can continue to work even when there are people, dynamic disinfection, coexistence of man and machine, and always guarantee the breathing safety of the driver. It is worth mentioning that EddaAir bus air purifier plasma disinfection and sterilization technology has been reliably designed to meet two important indicators of the rail transit industry, and the quality is more guaranteed!

EddaAir bus air purifier dedicated to public transportation to create a safe and comfortable riding space

In the subway, bus, and other application scenarios, EddaAir bus air purifier disinfection and sterilization filter technology and plasma disinfection and sterilization technology are often used in combination, which can achieve the effect of double disinfection and purification, and provide passengers with a more comfortable and safe riding environment. In addition, the EddaAir bus air purifier can remotely monitor the air indicators in the vehicle cabin, such as temperature, humidity, PM2.5, formaldehyde, TVOC, etc., in real-time through a mobile phone or computer client through the built-in IoT module in the device. Can grasp the air quality in the car, greatly improve the management efficiency and level.

EddaAir bus air purifier dedicated to public transportation to create a safe and comfortable riding space

EddaAir bus air purifier has 5 professional laboratories, more than 30 professional certifications and test reports in the country, which makes it has a deep technical accumulation in the field of HVAC products and environmental control and is used for public transportation, residential housing, commercial centers, and schools. , Hospitals, etc. to provide comprehensive solutions for the air environment.

In the future, with the changes in the characteristics of transportation demand after the epidemic and the current status of the global epidemic’s new normal, relevant departments will pay more attention to air safety in the public transportation field, and EddaAir bus air purifier products and solutions will also have broader market prospects.

Pros and Cons of air disinfection machine

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There are 5 main conventional sterilization methods: radiation sterilization, filtration and sterilization, gas sterilization, moist heat sterilization, and isothermal sterilization.

A. Radiation sterilization method: refers to the method of killing microorganisms by ionizing radiation by placing sterilized products in the y-rays radiated by suitable radioactive sources or in the electron beam generated by suitable electron accelerators.

B. Filter sterilization: a method of removing microorganisms from gases or liquids by using the principle that bacteria cannot pass through dense porous filter material.

C. Gas sterilization: a method of killing microorganisms by using gases formed by chemical disinfectants

D. Moist heat sterilization: a method of killing microorganisms by placing them in sterilization cabinets and using high pressure saturated steam, superheated water spraying, and other means to denature the proteins and nucleic acids in the microbial organism.

E. Dry heat sterilization: a method of killing microorganisms or eliminating pyrogenic substances by placing the article in a dry heat sterilization cabinet, tunnel sterilizer, etc. using dry hot air.

F. Dry heat sterilization refers to the method of placing articles in a dry heat sterilization cabinet, tunnel sterilizer, etc., and using dry hot air to kill microorganisms or eliminate pyrogenic substances.

The use of dry hot air to kill microorganisms or eliminate pyrogenic substances.
It is easy to see that these traditional methods have many drawbacks, such as environmental contamination (nuclear radiation, chemical contamination).

The disadvantages of these traditional methods include environmental contamination (nuclear, chemical), long sterilization times, drug residues, and poor safety.

Advantages of air disinfection machine

Environmentally friendly: no toxic residue and discharge, no damage to medical personnel, and no pollution to the environment.

Safety: The automatic control panel is easy to operate, without high temperature and pressure, and is simple to install and commission, and safe to use.

Normal temperature: sterilization temperature is 35℃~45℃, dry sterilization, no damage to instruments and articles, can extend the service life of valuable instruments.

Time-saving: The sterilization cycle is short, simple instruments can be sterilized within 30-50 minutes, and complex instruments within 50-70 minutes, and can be used directly after the operation.

Wide range of applications: low-temperature sterilization is suitable for a wide range of materials and instruments, especially for non-heat-resistant electronic instruments such as endoscopes, electronic instruments, batteries, wires, photographic cameras, and other items, sterilization treatment, unique advantages.

Definition of cold plasma air sterilization

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air disinfection machine

1. Definition of air disinfection machine
Disinfection: Disinfection is the process of killing or eliminating pathogenic microorganisms on a vector by chemical or physical means to a level where there is no longer a risk of transmission of infection.

Sterilization: Sterilisation is the process of killing or removing all microorganisms from the external environment including pathogenic and non-pathogenic microorganisms such as bacteria (including bacteriophages) viruses, fungi (including spores), etc., generally considered to exclude protozoa and parasite eggs, and algae. Sterilization is essential to obtain pure cultures and is a necessary technique in the food industry and in the pharmaceutical field.

Sterilization is an absolute concept, meaning the complete killing of the micro-organisms being treated, and the fact that sterilized items can enter directly into sterile human tissue without causing infection makes sterilization the most complete form of disinfection. However, in fact, it is difficult to achieve this level of sterilization, so internationally accepted methods stipulate that the sterilization process must reduce the probability of survival of microorganisms contaminating the article to E-6 (sterilization assurance level), in other words, to 99.9999% of the target microorganisms.

In the face of such stringent sterilization requirements, the ideal sterilizer should have the following characteristics and performance:
1 ) The sterilization speed should be as fast as possible and the time should be as short as possible;
2) The sterilization temperature should be below 55°C, with minimal damage to instruments and objects;
3) Sterilization should have no effect on the whole environment and the sterilization residues should be harmless;
4) Can meet the sterilization requirements of a variety of items;
5) The price of the consumables used should not be too high.

2. Air disinfection machine

Most of the sterilization methods used today are thermal sterilization, radiation sterilization, ethylene oxide sterilization, cold formaldehyde steam sterilization, and prolonged immersion in various sterilizing agents such as glutaraldehyde, chlorine dioxide, peroxyacetic acid, and hydrogen peroxide.

These sterilization methods have many limitations, such as environmental hazards, long sterilization times, high sterilization temperatures resulting in greater damage to instruments, and loss of food nutrition.

With the increasing demand for sterilization and sterilization processing. The limitations of traditional sterilization methods are leading to the creation and development of new sterilization technologies.

EddaAir Plasma air sterilization technology
Plasma sterilization technology is a new generation of high-tech sterilization technology that can overcome some of the limitations and shortcomings of existing sterilization methods and improve the sterilization effect.

For example, for plastics, optical fibers, artificial crystals, and optical glass materials that are not suitable for sterilization by high-temperature steam and infrared methods, metal objects that are not suitable for microwave treatment, and crevices and corners that are not easy to achieve sterilization, this technology can be used to achieve good sterilization at low temperatures without causing any damage to the sterilized parts.The plasma used in this technology is non-toxic and harmless.

The working substance is non-toxic and harmless. The technology can also be applied to production lines to sterilize products.

With environmental issues becoming more and more of a concern today atmospheric low-temperature plasma sterilization as a clean disinfection method will have a broad application prospect plasma sterilization is the future direction of sterilization technology in the medical and health, pharmaceutical, and bioengineering food industries.


Low-temperature plasma sterilization technology is a new sterilization technology in the field of sterilization after formaldehyde, ethylene oxide, glutaraldehyde, and other low-temperature sterilization technology, which is characterized by low temperature, rapid, low toxicity residue, and is suitable for items and instruments that are resistant to heat and humidity and are not resistant to heat and humidity.

Cold Plasma Can Kill Coronavirus on Common Surfaces in Seconds

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Advance may offer safe and effective way to curb spread of COVID-19

Nov 23, 2020

By UCLA Samueli Newsroom

UCLA engineers and scientists have demonstrated that treatments with near-room-temperature, cold atmospheric plasma can kill the coronavirus present on a variety of surfaces in as little as 30 seconds.

A study detailing the research, which was published this month in the journal Physics of Fluids, is the first time cold plasma has been shown to effectively and quickly disinfect surfaces contaminated with the SARS-CoV-2 virus that causes COVID-19.

The novel coronavirus can remain infectious for tens of hours on surfaces so the advance is a major breakthrough that may help slow the spread of the virus.

“This is a really exciting result, showing the potential of cold atmospheric plasma as a safe and effective way to fight transmission of the virus by killing it on a wide range of surfaces,” said study leader Richard Wirz, professor of mechanical and aerospace engineering at the UCLA Samueli School of Engineering.

Plasma, not to be confused with blood plasma, is an electrically charged gas known as the fourth state of matter (solid, liquid, and gas being the others), with electrons and charged ions accounting for its main makeup.

The researchers created the plasma by subjecting air and argon gas — a common, non-toxic gas — to a strong electric field across electrodes inside a spray jet built by a 3D printer. The resulting ionized, atmospheric cold plasma remains stable at room temperatures.

Wirz Research Group/UCLA
Cold atmospheric plasma device treating metal samples in a six-well plate. The glowing is due to the presence of excited air molecules, not to higher temperatures.

The team used the jet to spray plastic, metal, cardboard, and leather surfaces laced with SARS-CoV-2 cultures. The jet ionized the surrounding air, turning it into cold atmospheric plasma and killing most of the virus after 30 seconds. The team saw similar results with cotton from facemasks. Leather from basketball, football, and baseball was included to test effectiveness in disinfecting sports equipment and to simulate the rough and wrinkled surface of skin.

Cold plasma has previously been shown in research studies to be effective in cancer treatment, wound healing, dental-instrument disinfection and other applications.

An important advantage of plasma is that it can be safely used on a variety of surfaces without damaging them, while treatments with chemicals and UV light cannot be used effectively on porous surfaces like cardboard and skin without damage.

Another advantage is an estimated lower cost for supplies compared to standard chemical sanitizers. The researchers are working with campus units at UCLA to further test the system.

“This eco-friendly, innovative technology could be implemented to prevent the transmission of SARS-CoV-2 in hospitals, transportation and sports settings,” said study co-author Vaithi Arumugaswami, an associate professor of molecular and medical pharmacology at the David Geffen School of Medicine at UCLA.

According to Wirz, cold plasma may even be a potential candidate, pending further study, to kill the coronavirus when it is airborne.

The study’s lead author is Zhitong Chen, a postdoctoral scholar in Wirz’s research group, which performs a wide range of plasma-based research, from propulsion to fusion materials.

UCLA staff research associate Gustavo Garcia, a member of Arumugaswami’s research group, is also an author on the paper.

The research was supported in part by the Air Force Office of Scientific Research, with additional support from the Geffen School of Medicine and the Broad Stem Cell Research Institute.

The researchers have also created a UCLA-based startup, plasma, to further explore the potential of the technology.

Reference:https://samueli.ucla.edu/cold-plasma-can-kill-coronavirus-on-common-surfaces-in-seconds/

Cold plasma technology is shown to extend the shelf life of food

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As has been demonstrated, there is hardly anywhere in the world that could not benefit from effective, high-quality air disinfection, but perhaps one of the most important areas where we could achieve very significant results with it is the food industry.

We can hardly even imagine how long it takes for a product to go from the shop shelf to being taken home!” . There are thousands of hazards associated with each job, with the risk of contamination, spoilage, injury and, if bacteria attack food, almost certainly our bodies as well. The problem of food contamination affects all parts of the industry in the same way. In the meat industry, there are already many sources of danger on farms because of the rapid spread of bacteria and viruses as animals are confined to small spaces. Year after year we hear of an epidemic that has struck the animals and caused serious work stoppages for farmers.

The fact that many people are close to the product during processing also increases the risk of contamination and infection. Where processed food is stored, it is also exposed to many sources of error. Bacteria that cling to the surfaces of meat, vegetables, and fruit can not only be dangerous if they enter our bodies but can also have a detrimental effect on the product itself. In fact, some bacteria can cause food, but especially fruit, to spoil more quickly, significantly reducing the time to market and, incidentally, the price. The technology itself does not require complex infrastructure, as air ionization takes place almost unnoticed with the help of EddaAir devices, using robust equipment that can even be integrated into ventilation systems. As no harmful substances are emitted during this period, the technology does not use chemicals, so we can use it near people and food and we can enjoy its benign effects continuously, even 24 hours a day.

It eliminates the extremely unpleasant odors of the livestock industry and many pathogens from people sitting on conveyor belts no longer pose a threat to the products they are processing, sorting or packing, nor are there bacteria that threaten the texture of the products.

This will make food processing and trade safer, protect the health of those working in it and make the sale of products safer than ever before!” . The naturalness of the method is likely to be a guarantee that, as a worthy successor to previous chemical treatment methods, cold plasma technology is one of the newest and most promising alternatives to food preservation. But the process is not limited to industry; the technology can also accompany us into the home. The wide range of excellent EddaAir equipment allows us to keep nutrients safe not only during production and processing and then during storage, but also in our homes, in the fridge or on the shelves of our pantry.

EddaAir has supplied high-tech air disinfection equipment to a number of companies and homes around the world. Every room and every situation is unique, so for maximum efficiency it is not only worth asking around, but also consulting our expert colleagues.

Be one of the entrepreneurs open to development and one of the first in our small country to introduce cold plasma technology into your business so that you can store and sell your products in the longest and safest way possible!

Plasma air disinfection machine functions, advantages and applications

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Function:


Plasma air disinfection machine can be highly efficient sterilization plasma sterilization disinfection effect is extremely strong, and the action time is short, is far less than the high intensity of ultraviolet light.

Compared with the traditional UV circulating air disinfection machine, it has the following advantages:
1.High-efficiency sterilization plasma sterilization disinfection effect is very strong, and the action time is short, is far less than the high intensity of ultraviolet light.


2.Environmental protection plasma sterilization is continuous non-stop work but also does not produce ultraviolet light, ozone, to avoid secondary pollution of the environment.

3.Efficient degradation of plasma disinfection machine for air disinfection at the same time, but also degradation of harmful, toxic gases in the air, by the Chinese Center for Disease Control and Prevention test report shows that the degradation rate within 24 hours: formaldehyde 91%, benzene 93%, ammonia 78%, xylene 96%. At the same time can efficiently remove smoke, smoke smell and other pollutants.

4.Low energy consumption – plasma air disinfection machine on the power is 1/3 of the UV disinfection machine, very energy-efficient. For a room of 150m3, plasma machine 15oW, UV machine 450W or more, – annual electricity savings of more than 1000 yuan.

5.Long service life plasma disinfection machine under normal use, the design life of 15 years, while the UV disinfection machine only 5 years.

6. Once invested in a lifetime free of consumables UV disinfection machine about 2 years need to replace – a batch of lamps, the cost of nearly 1000 yuan. And plasma disinfection machine lifelong without consumables. In summary, the normal use of plasma air disinfection machine depreciation cost of about 1000 yuan / year, while the relative depreciation cost of UV disinfection machine about 4000 yuan / year. And plasma disinfectors work very environmentally friendly, harmless to medical staff and patients. Therefore, it is very wise to choose a plasma disinfector for air disinfection.

Application scope:
Health care: operating rooms, ICU, NICU, neonatal rooms, delivery rooms, burn wards, supply rooms,, intervention centers, isolation wards, hemodialysis rooms, infusion rooms, biochemical rooms, laboratories, etc.

Others: Biopharmaceuticals, food production, public places, meeting rooms, etc.

How to properly use air sterilization purifier for disinfection?

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Air disinfection machine is usually suitable for disinfection and sterilization of indoor air and surface of objects in operating rooms, examination rooms, treatment rooms, wards, etc. There are usually three disinfection modes: ultraviolet air disinfection, plasma air disinfection, and ozone air disinfection, or mixed disinfection of the two modes at the same time. Among the three disinfection methods, the ozone disinfection method is the most effective, but the ozone air disinfection machine is a disinfection machine that cannot coexist with humans and machines. During the sterilization process, people need to leave the sterilization space. So how to properly use the plasma ionizer for disinfection? Let’s introduce to you the editor of EddaAir air purifier plasma.

How to use the air disinfection machine for disinfection:

1. During the use of the air disinfection machine, attention should be paid to the air tightness of the space. The doors and windows should be closed during the disinfection process to ensure that the room has good air tightness. In addition, the movement of personnel should be reduced to ensure the disinfection effect.

2. The disinfection time of the air disinfection machine should be selected as follows:Dynamic disinfection: The purpose is to control and reduce the secondary pollution of the ambient air by personnel during activities.Preventive disinfection: regular disinfection 1 to 2 times a day, every 2 hours of starting, usually arranged in the morning before work and after get off work in the afternoon.

3. During the disinfection process of the air disinfection machine, there should be no obstructions at the air inlet and outlet, so as to protect the good circulation of air as much as possible.

4. Different types of air disinfection machines have different disinfection areas. Therefore, we should pay attention to the selection process, otherwise it will affect the disinfection effect.

In the use of air disinfection air purifier plasma machines, the filter should be replaced regularly. If consumers cannot replace them in time during use, not only the disinfection and purification effect will not be achieved, but it may be a source of secondary pollution. The filter of each brand of air disinfector The mesh replacement cycle is different. You can check the cleanliness of the filter regularly. If the white filter gradually becomes black, it must be replaced. In addition, it can also be judged according to the wind speed of the air outlet.

The above content is an introduction to how to properly use an air plasma ionizer for disinfection. In addition to killing bacteria, viruses, molds, spores and other so-called sterilization and disinfection, some models can also remove formaldehyde, phenol, etc. in the indoor air. Such as organic pollutants, but also can kill or filter allergens such as pollen. At the same time, it can effectively remove the smoke and smoke generated by smoking, the bad smell of the toilet, and the human body odor.

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