Notices
Results 1 to 6 of 6

Thread: Color removal from sulphuric acid solution

  1. #1 Color removal from sulphuric acid solution 
    New Member
    Join Date
    Oct 2007
    Posts
    3
    One of my co-worker have a chemistry related problem. He is working on an acidic solution which contains about 75% of sulphuric acid, 20-23% water and 2-5% organic impurities, the colour of solution is black. He wants to remove the black colour of solution but after tried with many reagents it is still black. The organics present in the solution are poly vinyl acetate and Ethylene dichloride, which cause the black colour in the solution. So specifically He wants to remove these dissolved organics from the solution without diluting it. Please help me on this problem.

    thanks for your reply. I want to clear that this not chemist's funny idea but a real problem. I would like to give further info. that chemist want to remove EDC and PVA from the mixture. [You may suggest replacement of EDC and PVA]

    As EDC and PVA are not environment friendly, so he want to remove it. this is main goal. Second goal is upto replacement of both, he has to use these solvent but faces problem of color in final mixture.


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Bachelors Degree
    Join Date
    May 2007
    Location
    NC USA
    Posts
    488
    Extraction with chloroform or carbon tet?

    What is real goal? A clean solution of sulphuric acid? Start afresh.
    Recover the organics? Neutralize the acid and use standard extraction
    techniques. Or is this merely a chemist's version of a funny riddle?


    Reply With Quote  
     

  4. #3  
    Forum Professor
    Join Date
    May 2005
    Posts
    1,893
    I agree with stevef. Just do an extraction with some organic solvent or other.
    Reply With Quote  
     

  5. #4 colr removal of sulphuric acid 
    New Member
    Join Date
    Oct 2007
    Posts
    3
    Quote Originally Posted by SteveF
    Extraction with chloroform or carbon tet?

    What is real goal? A clean solution of sulphuric acid? Start afresh.
    Recover the organics? Neutralize the acid and use standard extraction
    techniques. Or is this merely a chemist's version of a funny riddle?
    thanks for your reply. I want to clear that this not chemist's funny idea but a real problem. I would like to give further info. that chemist want to remove EDC and PVA from the mixture. [You may suggest replacement of EDC and PVA]

    As EDC and PVA are not environment friendly, so he want to replace it. this is main goal. Second goal is upto replacement of both, he has to use these solvent but faces problem of color in final mixture.
    Reply With Quote  
     

  6. #5  
    New Member
    Join Date
    Oct 2007
    Posts
    3
    Quote Originally Posted by Scifor Refugee
    I agree with stevef. Just do an extraction with some organic solvent or other.
    thanks for your reply. I want to clear that this not chemist's funny idea but a real problem. I would like to give further info. that chemist want to remove EDC and PVA from the mixture. [You may suggest replacement of EDC and PVA]

    As EDC and PVA are not environment friendly, so he want to replace it. this is main goal. Second goal is upto replacement of both, he has to use these solvent but faces problem of color in final mixture.
    Reply With Quote  
     

  7. #6  
    Forum Bachelors Degree
    Join Date
    May 2007
    Location
    NC USA
    Posts
    488
    *Kirit Kumar, you have provided no additional information. We still don't know your friend's goal. We also don't know how the impurities got into the acid. If you really wish to help your friend, tell him to come on this forum himself.
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •