What is reverse osmosis process?/RO water treatment (Desalination)
Explains osmosis and reverse osmosis process in detail. Removal of salts from seawater/brackish water. Desalination. Demonstration of reverse osmosis. water softening, water purification. The materials used in the semi permeable membrane. The advantages and disadvantages of this method is also discussed.
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Desalination -Reverse Osmosis
You will be able to define desalination, osmosis and reverse osmosis.
You will be able to list out the different methods of desalination.
You will be able to describe the process of reverse osmosis with a neat diagram.
You will be able to mention the advantages and disadvantages of reverse osmosis process.
Removal of salts from water is known as desalination.
Methods of desalination
Thermal distillation (Thermal)
Reverse osmosis (Pressure)
Electrodialysis (Electrical)
Osmosis
When two compartments containing solutions of different concentrations are separated by a semipermeable membrane, the solvent moves from lower concentration to higher concentration side.
Reverse Osmosis
When two compartments containing solutions of different concentrations are separated by a semipermeable membrane and hydrostatic pressure greater than osmotic pressure is applied on the concentrated side the solvent moves from higher concentration to lower concentration side.
(When brackish water (saline water) and pure water are separated by semipermeable membrane, water moves from saline to pure water compartment)
Advantages of reverse osmosis
The process is simple, cheap and reliable.
It not only removes the ionic salts but also the non-ionic, colloidal matter and high molecular weight organic matter.
Although the installation cost is high, the maintenance cost is low.
The membrane can be replaced in 3-4 minutes and hence can get uninterrupted water supply.
Limitations/Disadvantages of reverse osmosis
The membrane cost is high.
Membrane should withstand pressure of 20-100 atm.
Пікірлер: 116
Thanks a lot mam.. your video was very simple with lots of information everyone can easily understand .. thanks again .
@RevathiPurushothaman
5 жыл бұрын
Thank you.
@niteeshtechminister126
4 жыл бұрын
@@RevathiPurushothaman happy new year
@RevathiPurushothaman
4 жыл бұрын
@@niteeshtechminister126 Thank you very much. Wish you the same.
Ma'am really I haven't words to say thank you for your such kind of explanation method.I was given an assignment on reverse osmosis water desalination system.
@RevathiPurushothaman
Жыл бұрын
It's my pleasure. Thank you very much for your nice words.
One minute silence for those who dislike this valuable video😔
Thanks fa the video mam..
thanks a lot for sharing the information about the RO
@RevathiPurushothaman
4 жыл бұрын
Most welcome.
Mam please do a video on that memebrane brief work with chemicals U said..
@RevathiPurushothaman
5 жыл бұрын
I will try doing it.
Your Teaching is very good madam
@RevathiPurushothaman
Жыл бұрын
Thank you so much.
Thank you
@RevathiPurushothaman
2 жыл бұрын
It's my pleasure.
Thanku ma'am 🙏
@RevathiPurushothaman
6 ай бұрын
It's my pleasure.
Beautifully defined
@RevathiPurushothaman
4 жыл бұрын
Thank you.
please, can you make a video about the microplastics and how to extract it from rivers and oceans?
@RevathiPurushothaman
4 жыл бұрын
i will try.
Very useful info thanks
@RevathiPurushothaman
5 жыл бұрын
Thank you.
Thank you ma'am this is very helpful for my exams
@RevathiPurushothaman
3 жыл бұрын
It's my pleasure.
Clear cut explanation 👍
@RevathiPurushothaman
3 жыл бұрын
Thanks for your compliments.
Well explained mam with simple explanation thnku mam🙏
@RevathiPurushothaman
9 ай бұрын
Thanks. It's my pleasure.
❤ from Kerala Thxs miss
@RevathiPurushothaman
2 жыл бұрын
It's my pleasure.
Nice interpretation of process
@RevathiPurushothaman
3 жыл бұрын
Thank you
Thank you madam
@RevathiPurushothaman
Жыл бұрын
It's my pleasure.
The Way Of Explaining is Outstanding mam👌
@RevathiPurushothaman
3 жыл бұрын
Thank you very much.
@skfaruk1613
3 жыл бұрын
@@RevathiPurushothaman mam Just today I completed my sem exam, luckily this process Asked in Exam Qpaper I didn't read about RO process in books I simply watched your video and Answered the question Thanx once again 😊
Ma'am, would you like to make a video on Nanotubes that are used to desalinate sea water please??
@RevathiPurushothaman
Жыл бұрын
I will try.
Thankyu
@RevathiPurushothaman
Жыл бұрын
It's my pleasure.
Superb class...
@RevathiPurushothaman
4 жыл бұрын
Thank you.
Ma'am very good video.
@RevathiPurushothaman
5 жыл бұрын
Thank you.
I am understand verry simple mam
@RevathiPurushothaman
3 жыл бұрын
Happy that you understood and it was simple for you
Thank you ma'am 😍😍😍
@RevathiPurushothaman
3 жыл бұрын
You are most welcome.
Water me se flouride remove hua ki nahiii kaise Pata Karen??? Kon si technique apply Karen???
Clear explanation
@RevathiPurushothaman
4 жыл бұрын
Thank you.
Good cls
@RevathiPurushothaman
3 жыл бұрын
Thank you.
Excellent explanation madam
@RevathiPurushothaman
10 ай бұрын
Thank you so much.
Mam dusre ke video me osmosis ki definition ulti hai usme higher concentrate to lower concentrate batate hai
@RevathiPurushothaman
5 жыл бұрын
Yeh explanation correct hai.
Best best video
@RevathiPurushothaman
2 жыл бұрын
Thank you very much.
Wow very informative mam 👏
@RevathiPurushothaman
3 жыл бұрын
Thank you. Nice that it helped you.
@_IT_AJAYKUMAR
3 жыл бұрын
@@RevathiPurushothaman you're welcome 😊
Thanks mam
@RevathiPurushothaman
4 жыл бұрын
Most welcome.
People have made use of reverse osmosis but what about straight osmosis? Wouldn't it be possible to use an electrolyte mixture (like Gatorade powder) to draw water through a semi permeable membrane? Pond and river water could be made safe to drink without all that pumping that normal filters require.
@RevathiPurushothaman
Жыл бұрын
On straight osmosis, water will move from lower concentration to higher concentration. Reverse osmosis is mainly used to reduce the salt (minerals) content in the water.
@paulharland7280
Жыл бұрын
@@RevathiPurushothaman but it is also used to remove bacteria and other contaminants.
why reverse osmosis can be used for softening as well as desalination but not ion exchange process???
@RevathiPurushothaman
2 жыл бұрын
Ion-exchange process also remove all salts, but in form of ions.
Really nicee
@RevathiPurushothaman
2 жыл бұрын
Thank you.
Nice
@RevathiPurushothaman
7 ай бұрын
Thanks
Hi mam. I have been trying to understand this process by reading a few blogs and other materials. Your video made things crystal clear. Thank you very much mam. I do have a few more doubts regarding this process and other water treatment options. Could you please share me your official email ID so that i can email you my doubts. Thank you in advance mam.
@RevathiPurushothaman
4 жыл бұрын
Thank you very much.
Thanks🤠🤠
@RevathiPurushothaman
4 жыл бұрын
Most welcome.
Thanks madam
@RevathiPurushothaman
4 жыл бұрын
Most welcome.
Can u send those pdfs???
Super mam
@RevathiPurushothaman
2 жыл бұрын
Thank you very much.
👍
@RevathiPurushothaman
2 жыл бұрын
Thanks.
Nice mam
@RevathiPurushothaman
4 жыл бұрын
Thank you.
Madam explain the brackish water please
@RevathiPurushothaman
4 жыл бұрын
It has more salinity, but not as much as that of sea water. So it can be treated easily to get fresh water.
Colloidal silt ruins the membrane actually
Ok
Relly thanks for this video mam I understood completely
@RevathiPurushothaman
3 жыл бұрын
Happy that you understood. Thank you.
Nice Mom
@RevathiPurushothaman
Жыл бұрын
Thank you.
Saline: SAY-leen
Another disadvantage is wastage of arround 70-80% of water. It leads to Water crisis in future.
Mam super maa
@RevathiPurushothaman
2 жыл бұрын
Thank you very much.
Can you send this pdf
@RevathiPurushothaman
9 ай бұрын
Check my blog.
My exm is in 1 hr
@RevathiPurushothaman
2 ай бұрын
Thanks
Hindi ma bolna ma kya problem hai mam ?
@RevathiPurushothaman
Жыл бұрын
Muje Hindi achi nahi malum.
Nice
@RevathiPurushothaman
4 жыл бұрын
Thank you.