Demystifying The Power of Deionized Water

by | May 1, 2024

Deionized water, DI water

Deionized water, also known as DI water or demineralized water, is different from your average H2O. It is thoroughly purified and free from impurities, which helps reduce the risk of corrosion and contamination. 

Deionized water is highly beneficial for labs. It effectively dissolves substances without impurities, making lab tests easier. Plus, it’s excellent for industrial appliances because it doesn’t leave mineral buildup, making appliances last longer.

Did you know? The global demand for deionized water systems is projected to grow at a remarkable rate of 7.4% by 2032, with its market value reaching a staggering US$13.1 billion.

DI water is a clean and reliable solution, ensuring industry purity and performance. 

Let’s discuss in detail what is deionized water or DI water and how it works.

What is Deionized Water?

Deionized water has undergone a thorough purification process. It removes all contaminants, including minerals and particles. Deionized water has a low conductivity as it depends on particles to contribute to its electrical conductivity. This makes it a perfect option for when pollutants can cause problems. 

Deionized water is often called “pure” water due to its high purity level. It is free from minerals, salts, and other impurities that can affect equipment or products. Since it is free from impurities, it is non-corrosive. This is crucial in industries where impure water can lead to damage.

How does this process work?

Deionized water has its minerals and pollution removed through a process called deionization. This preparation includes passing the water through particle trade gums or layers. This expels highly charged particles. The result is decontaminated water with a low conductivity and non-attendance of minerals.

Deionized Vs. Distilled Water

People often refer to deionized water as distilled water. Both are used for their high purity, yet they have some differences. These differences make them suitable for different uses.

AspectDeionized WaterDistilled water
MethodIt removes minerals through deionizationIt is produced through distillation.
ProductionDeionized water is passed through membranes that trap ions. Distilled water is produced by heating, which creates steam. It is then put back into liquid form. 
PurityIt is free of ions, but it may contain some non-ionic impurities.It is free of minerals and ions
ConductivityIt has lower conductivity as compared to tap waterIt has very low conductivity.
UsesIt is used in the pharmaceutical industry, experiments, etc.It is used in humidifiers, steam irons, etc. 

While both waters are pure, they differ in how impurity is removed. Hence, deionized and distilled water have different applications. Deionized water removes minerals, while distilled water removes impurities through evaporation. The choice between both depends on our use and requirements.

How is Deionized Water produced?

1)- Ion Exchange

This strategy includes passing water through a bed of particle trade gum. It is made of polystyrene sulfonate or similar materials. The resin contains charged particles that pull in and trade particles within the water. Then, it expels filth, such as calcium, magnesium, sodium, and other broken-up solids. The traded particles are often hydrogen and hydroxide particles. It is generated when deionized water is formed.

2)- Electrode Ionization (EDI)

EDI uses ion exchange resin with an electrical current to expel particles from water. It usually comprises substituting ion exchange resin beds and ion-selective layers. Particles move through the layers when a voltage is connected over the anodes. They are then expelled from the water, resulting in profoundly filtered water.

3)- Reverse Osmosis (RO)

Reverse osmosis uses weight to constrain water through a semi-permeable film. It blocks pollution, such as salts, minerals, and other contaminants. The film permits water atoms to pass through, catching bigger particles and particles. Reverse osmosis is utilized to deliver decontaminated water. It is then used for different applications, counting deionized water generation.

4)- Making DI Water At Home

Creating deionized water at home is possible. However, it is a complex procedure and requires specialized hardware. It also requires good knowledge of ion exchange resin, films, and other electrical items.

To make deionized water at home:

  • You first need to boil it up, leaving behind impurities. 
  • This boil or distilled water is passed through ion exchange resins to eliminate the remaining ions. 
  • Filter this water using the DI filter to remove any remaining particles. 
  • Store this deionized water in clean, sealed containers for future use. 

While this method can produce relatively pure water, it may not match the purity level achieved by commercial deionization systems. Hence, it is helpful to buy deionized water from a trusted source.  

Benefits of Deionized Water

Deionized water offers a multitude of benefits and finds applications in different businesses. Its unique properties make it a priceless asset for various forms and items. Let’s look into a few of the benefits and employments of deionized water in more detail. 

  • One of the benefits of deionized water is its ability to break down and retain substances. The absence of minerals permits deionized water to act as an all-inclusive dissolvable, making it perfect for dissolving chemicals and substances in research facility tests. Its purity guarantees that the broken-down substances aren’t connected with impurities, helping to get reliable results.
  • DI water lacks minerals like magnesium and calcium, which reduces mineral buildup. This helps in extending the lifespan of appliances. 
  • Deionized water is used in battery maintenance. The absence of ions and minerals in deionized water helps reduce corrosion within the batteries, extending their performance. 
  • DI water also has low conductivity levels due to the removal of ions.
  • It has a natural taste because it lacks minerals. Hence, it benefits people who are discerning about the taste of water. 
  • DI water has a higher boiling point than regular tap water. This makes it ideal for high-temperature applications due to its superior properties.
  • It also benefits recycling wastewater. It removes impurities, which produces cleaner water for reuse in industries. 

Common Uses of Deionized Water

Deionized water is flexible and utilized in various industries and in daily life. It has distinct properties making it important in various products and process. Let us explore some uses of deionized water:

1)- Pharmaceutical Industry

It plays a vital role in making of medicines. It helps in maintaining the purity and stability of some active ingredients. It is also used for experiments in laboratories. Its purity helps in accurate results.

2)- Manufacturing

Deionized water is also used to manufacture electronic items. The hardware industry depends on deionized water for cleaning and washing. It removes contaminants from delicate electronic parts, guaranteeing ideal execution and life span.

3)- Car Industry

Moreover, deionized water works within the car industry. It is crucial for car producers amid the painting process. It prevents contaminants from affecting the last finish. Deionized water is also utilized in car wash offices. It ensures a spotless and streak-free sparkle.

4)- Food Industry

Another significant use of deionized water is within the food and refreshment industry. Its used in the production of soft drinks, juices, and alcoholic refreshments. Deionized water guarantees that impurities do not influence the flavors in these items. It, moreover helps keep up with the desired quality of the final product.

5)- Cosmetic Industry

DI water is also used in the cosmetic industry. It may be a key ingredient in the formulation of skincare and haircare items. The purity ensures that the items don’t contain impurities that might harm skin or hair. Moreover, deionized water helps improve the viability of dynamic fixings in makeup, which in turn allows for better retention.

Conclusion

Deionized water is a pure, contaminant-free solution widely used in laboratories and manufacturing for its cleanliness and purity.

Note: Though DI water is safe for drinking, it is not recommended for regular consumption over extended periods.

However, there is an increasing demand for recycling wastewater treatment in numerous end-user industries, which leads to the growth of deionized water systems in the market. Its production plays a significant role in various sectors. It ensures the quality, purity, and efficacy of products and processes. With deionized water, we can progress in laboratory research, manufacturing, and daily activities.

Bhuwan Bhatia

Bhuwan Bhatia

Bhuwan Bhatia, an engineering graduate with a diverse background, has been passionate about entrepreneurship since age 13. Founder of edtech startup Technoshaala, Bhuwan now focuses on leading his innovative water management startup, FLOTAA, in Kanpur to create sustainable solutions.
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