Determination of Swelling Index of Bentonite | Swelling Index Calculation | स्वेल्लिंग इंडेक्स
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- เผยแพร่เมื่อ 28 ก.ย. 2024
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DETERMINATION SWELLING INDEX OF BENTONITE
Sodium Bentonite clay is widely known for its high swelling characteristics. Bentonite is a natural, colloidal, hydrated aluminium silicate that has been processed to remove grit and non-swelling components of the ore. It is under the category of pharmaceutical aid. Bentonite is insoluble in and does not swell in organic solvents. Bentonite swelling power is determined by various experimental procedures such as loading difference and conditions of wetting. Sometimes the property may vary on the water content, chemical composition which can be called as grades of bentonite. Other types of bentonite are sodium bentonite, calcium bentonite and potassium bentonite, of which the useful adsorbent is calcium bentonite used in fuller’s earth. A typical sodium bentonite clay has the ability to absorb 4-5 times its own weight in water and can swell 5 - 15 times its dry volume at full-unconfined saturation.
PROCEDURE
1. A 2g sample of dried and finely ground bentonite clay is dispersed into a 100 ml graduated cylinder of about 3cm in diameter in 0.1g increments.
2. A minimum of 10 minutes must pass between additions to allow for full hydration and settlement of the clay to the bottom of the cylinder.
3. These steps are followed until the entire 2g sample has been added to the cylinder.
4. The sample is then covered and protected from disturbances for a period of 16 - 24 hours, at which time the level of the settled and swollen clay is recorded to the nearest 0.5 ml.
Bentonite Specified Value:
While the sodium bentonite clay utilized meets a Swell Index in the range of 24 ml - 36 ml, the targeted minimum value is 24 ml /2 g.
Pharmaceutical uses
1. It can be used as a bulk laxative.
2. It can be used as a desiccant due to its adsorption properties.
3. Also can be used in battlefield wound dressings.
4. It is a pharmaceutical aid used as suspending agents and emulsifying agent.
CONCLUSION
The apparent volume of the sediment at the bottom of the cylinder has to be 24ml or more, and then the sample passes the test for swelling power of bentonite.
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Keep making practical video mam these are very helpful for us thanks for your great work
Thank you
Good
Very nice and helpfull vídeo mam ...tx
Ma'm acid neutralizing capacity of aluminium hydroxide gel ka experiment ka vdo milega kya apne banaya hua
Thanku mam
We are currently conducting an experiment to create clumping cat litter. Is there anyone who can assist us with bentonite
composition?
Thank you
You will
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Definition plz
Sorry to say but this is free swelling value(FSV) Not swelling index.
Ye you can also say it "swelling power "
Thankx a lot Mam ..nice work keep it up🌸🌸🌸
Ma'am aap ki class Joni Karne hai
Thank you mam
Thank you maam
Bahut acchhe se samajh me aaya
Do Thankyou a lot
thanks\
Very Good Explanation. Thanks ❤️
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Thanks mam 😊
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Very very good explanation.Thank you ma'am ❤️
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Laboratory bentonite and skin apply bentonite alag Hy or sob bentonite same Hy
सपंर्क नम्बर
Mam can you explain this chemical structure.
Bentonight ko jiyada swelling ke liye kya use Karen
I have 30 + sweling
Bentonite kha sy mly gi plz reply me
how much do you need
Contact num plez
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