CARBON PURIFICATION

 To purify the carbon from the smoke emitted  by factories, the students of class IX namely 

J.NITHIN  and ARNAV.U had created a model for " CARBON PURIFICATION" and displayed in the CBSE - REGIONAL SCIENCE EXHIBITION held at RMK senior secondary school ,Thiruverkadu.

 This model has applications wherever air pollution needs to be controlled or filtered, especially in factories, vehicles, indoor spaces, and industrial settings. It also serves as a great educational tool to explain the importance of environmental protection.

Carbon purification uses activated carbon to remove impurities from liquids and gases, like water and air, through a process called adsorption. The highly porous structure of activated carbon traps contaminants on its surface, effectively eliminating issues such as odors, chlorine, organic compounds, and other chemicals. This purification technique is widely used in residential water filters, industrial water treatment, and air purification systems to improve product quality and remove pollutants. 

PROCEDURE

1. Take a cardboard box and place it in a cardboard of length 1 feet x 2 feet.

 2.Now, pierce a hole in the top of the cardboard box.

3. Take the plastic water bottle and cut the water bottle into a half.

 4.Now, open the cardboard box and insert the top body of the water bottle

. 5. Fix the bottle carefully as the node of the water bottle can be seen from outside.

 6.And then insert a PVC pipe into the mouth of the water bottle.

 7.Now, take a transparent plastic box and pierce two holes in opposite directions. 

8. Insert one end of the polluted air pipe into one side hole of the plastic box.

 9. Ensure the connection is airtight using tape or glue. 

10. Take another pipe and insert it into the opposite side hole of the plastic box. 

11. Take the chicken mesh and fold it like a box and keep it inside the plastic box. 

12. Fill the chicken mesh with cotton

13. Now, take a vertical pipe and connect it. 

14. Paste that pipe in a vertical direction. 

15. And then connect the PVC pipe from the mouth of the water bottle to the plastic box.

16. Now, label all the parts as factory, polluted air, carbon absorber, clean air, and chimney. 

17. Take a lamp and place it inside the cardboard box. 

18. Place camphor inside the lamp and fire it.

WORKING EXPLANATION

 Polluted air exits the factory through the first pipe. 

 It enters the carbon absorber, where the cotton filters out pollutants. 

 The clean air exits through the second pipe and goes up the chimney.

Observation

 Smoke Generation: Burning camphor produce white smoke, representing polluted air inside the factory.

Movement of Polluted Air: The smoke will travel through the "Polluted Air" pipe leading out of the factory and into the carbon absorber.

  Filtering in Carbon Absorber: The smoke passes through the cotton and observes the carbon. The intensity of the smoke reduces, indicating partial or complete removal of pollutants.

 Clean Air Release: The relatively cleaner air (with less visible smoke) exits through the "Clean Air" pipe and moves out via the chimney. 

BENEFITS

 Implementing a carbon purification model offers benefits like removing harmful organic chemicals, improving water taste and odor, and enhancing product quality in industries like food and pharmaceuticals.  It also protects sensitive equipment, such as RO membranes, and leads to reduced operational costs through its low energy use and long service life.  In environmental contexts, it aids in capturing atmospheric carbon dioxide, which can then be stored in water or used for applications like water softening or cooling systems. In Industrial Processes:

CBSE- REGIONAL SCIENCE EXHIBITION(2025-26)

 GREEN ENERGY

our school students  Rahul. P.K and Prahalad Shree Haree  of class VII participated in the CBSE REGIONAL SCIENCE EXHIBITION (VI -VIII category) held at RMK senior secondary school, Thiruverkadu on 19.11.2025 and 20.11.2025 on the below topic with the sub theme as Green Energy.

Eco friendly Power Storage device with Liquid Oxygen (LOX battery)

LOX BATTERY

Liquid oxygen when it in liquid state, the volume of 1 Litre, will expand up to approximately 860L, when it becomes a gas.

Power storage:

In this battery oxygen liquification is the power storage ,Oxygen Gas can be liquefied at a temperature of minus 183° Celsius and a pressure of 51.4 kg/cm².

Discharge:

It can be easily discharged by open one valve with one touch. 

WORKING COMPONENTS

Heat Exchanger Based Oxygen Chillness Remover

When liquid oxygen passes through an open-close valve, the oxygen transitions to a gaseous form. This transition significantly increases chilling effects, this may cause stuck up in pressure regulator, Flow Control Valve, and Air Motor. Therefore, this residue should be eliminated and The generated chilling effect can be redirected to the vehicle’s interior cooling ,as well as, we used to cold storage device (such as a freezer box).

Pressure Regulator

The liquid oxygen is already stored at 51.4 kg/cm^2 of pressure, This regulator allows us to control the pressure which is required, based on the load requirements .Less load requires less pressure, and more load requires more pressure. This concept is used to avoid power loss in the battery, and achieve good efficiency.

Flow Control Valve

The flow control valve is used to, control the speed of the air motor “Less speed, less flow; more speed, more flow “concept is used to reduce energy loss when the vehicle is locked in traffic and moving slowly on roads.

Air Motor:

The Air Motor features a low-leak, positive-movement design. It can be used to reduce energy loss and smooth ride.

An air motor has two ports ,one lets the air in to make the motor turn, and the other lets the air out.

Drive Gearbox:

The Drive Gearbox is used to strengthen the Air Motor, and also used to change the direction (forward/reverse) of the vehicle

Cost of the raw material and production process

Even though the cost of liquid oxygen costly, the raw material of liquid oxygen is distilled water, it is cheaper, One litre distilled water contains 889 grams of oxygen and 111 grams of hydrogen. A mass production and co-ordinate process make, liquid oxygen and liquid hydrogen making process very cheaper. Instead of liquid oxygen we can be used liquid hydrogen In our battery

Result

Triple Advantage:

1.The LOX battery is superior: It’s eco-friendly, long-lasting, compact, lightweight and it works long life.

2.A remarkable advantage of this battery is its high performance, as more than 95% of the energy invested during charging—which is stored in the form of high pressure and extreme cold—is recovered when the battery is discharged. This high level of performance signifies it is an excellent battery.”

3.Hydrogen and oxygen constitute an eco-friendly fuel source. Should we design or employ an engine operates by hydrogen and oxygen, which is released by our air motor, then this engine 'senergy potentially be utilized to reproduce the liquid hydrogen and liquid oxygen

Chemical Reaction of Magnesium with Oxygen

Burning of Magnesium Ribbon

 

During our science activity on Burning of Magnesium Ribbon, students explored how a metal reacts with oxygen and forms a completely new substance. The materials used for the activity included a strip of magnesium ribbon, sandpaper, a pair of tongs, a candle, a watch glass, water, and red and blue litmus papers. Before the burning process began, the students first examined the magnesium ribbon and noticed that its surface looked dull. They learned that this was due to a thin oxide layer formed when magnesium reacts slowly with air over time. To remove this coating, the students used sandpaper to gently clean the ribbon until it appeared shiny again, ensuring that the pure metal was exposed for a proper reaction. Holding the ribbon with tongs for safety, they brought it close to the flame of the spirit lamp. The moment it touched the flame, the magnesium ignited and burned with an intensely bright white light, which fascinated the students and helped them clearly understand that a chemical reaction was taking place. After the ribbon had completely burned, a white powdery substance was left behind on the watch glass. Students collected this ash—magnesium oxide—and added a small amount of water to it. This mixture formed magnesium hydroxide, which is only slightly soluble in water. The students then tested the solution with litmus papers. They observed that while blue litmus remained unchanged, the red litmus paper turned blue, indicating that the product formed was basic in nature. Through this hands-on experience, students not only understood the concept of chemical change but also learned how to test the nature of substances using indicators. The activity helped them connect theory with real observation, making the learning process engaging and memorable.

Chemical equations

• Burning (oxidation):
  2 Mg + O₂ → 2 MgO

• Reaction with water:
  MgO + H₂O → Mg(OH)₂

Fit India Movement Pledge

Health and Fitness

FIT INDIA MOVEMENT PLEDGE

The aim of the Fit India Movement is to make fitness an integral part of daily life by encouraging physical activity and sports for a healthier lifestyle and to combat lifestyle diseases. The movement seeks to create a behavioral change in the population to promote a more physically active lifestyle by making fitness accessible, fun, and free, spreading awareness through campaigns, and encouraging indigenous sports.

                                                    

                                                     "Health is the ultimate wealth."

In order to understand the above  quote, the students  of class 8 took "Fit India movement " pledge.

 Health and fitness are crucial for physical and mental well-being, helping to reduce the risk of chronic diseases like heart disease and diabetes, improve mood and energy levels, and strengthen muscles and bones. Regular physical activity also helps manage weight, improve sleep, and boost cognitive function, leading to a better overall quality of life. Reduces the risk of developing conditions like heart disease, stroke, type 2 diabetes, and some cancers. Helps maintain a healthy body weight and reduces body fat.

Formation of Shadow

 Shadow Activity

To help students understand how light travels and how shadows are created, our students of class v conducted an engaging and hands-on Shadow Activity. This activity introduced students to the basic principles of light, such as how it travels in a straight line, how objects block light, and how shadows change in size and shape depending on the position of the light source. The objective of the activity was to help children observe shadows, identify factors affecting them, and relate the concept to everyday experiences.

To begin with, students were shown a torch/flashlight and a variety of objects such as a  white dhoti, ball, a pencil, a toy, a book, and a bag.  All the doors and windows were closed for observing the shadows clearly. They observed what happened when the light was directed at the object. The students quickly noticed that when an object blocks the path of light, a dark region forms behind it. This dark patch is called a shadow. They also explored how different objects create shadows of different shapes and sizes and how transparent, translucent, and opaque objects behave when placed in the path of light. They created fun activities like shadow puppet show with different postures with their hands.

During the activity, students held objects at different distances from the light source and screen. They discovered that when the object moves closer to the torch, the shadow becomes larger, and when the object moves away, the shadow becomes smaller. They have also learnt that shadows are never inverted and they do not provided information such as color and size of objects

Through this activity, students understood that shadows form only when an object blocks light, and the nature of the shadow depends on the type of object and the position of the light source. The activity helped them visually connect scientific concepts with real-life situations, such as noticing shadows of trees, buildings, and themselves in everyday surroundings. The Shadow Activity was not only educational but also fun, allowing students to explore science in an enjoyable and creative way.