How to Reduce, Reuse & Recycle Styrofoam

Styrofoam is a material that won’t break down, can’t be recycled and will always remain on earth. Unless you know a little science.

Styrofoam is made up of long strands of styrene molecules with lots of air pockets. It’s called polystyrene. The styrene strands dissolve in acetone. They seem to disappear like magic when the acetone and polystyrene react together.

We must reduce our usage of styrofoam or replace it with more earth-friendly materials like corn. Packing peanuts made from corn will dissolve in water. Reusing styrofoam is another earth-friendly way to use styrofoam, but recycling it is not possible.

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Comments (19)

  • Sue Newell Reply

    I tried this with some packing peanuts and nail polish remover. It did not work. The peanuts were not water soluble. Are there peanuts that are not water soluable or acetone soluble?

    August 26, 2010 at 7:40 pm
  • Barbara Reply

    Polystyrene or Styrofoam can be recycled! Refoamit and KWD warehouse have recycled more than 1.5 MILLION pounds in the last three years. We have a plant in N. Smithfield, RI and have public collection days scheduled in MA. Please see our web site for more information about recycling options!

    August 27, 2010 at 5:40 am
    • Jane Reply

      I am trying to get my office to recycle everything possible and was glad to learn of Refoamit. Any chance collection will extend to New York (specifically eastern Long Island)?

      October 14, 2010 at 9:04 am
  • Julie Gintzler Reply

    Sue – It is not the packing peanuts that skewed your results. It is the nail polish remover. It has to be nail polish remover with a high acetone content. Acetone is what breaks down the styrofoam.

    August 27, 2010 at 9:04 am
  • Julie Gintzler Reply

    Barbara – This is wonderful! What a great idea. But please indulge me as I share a teacher’s perspective with you. These days we are teaching children the terms Reduce, Reuse, and Recycle. Technically you cannot RECYCLE styrofoam. If we break down the term recycle it means that the item will come back as a new one the original. We Recycle aluminum cans because they come back as an aluminum can. We Reuse plastic bottles because they come back as tee shirts and carpet. I think what Refoamit is doing is AMAZING, but it is not recycling it is reusing or repurposing. I hope the patent comes through and it becomes a world-wide mission. I also hope teachers share this concept with their students. I suppose it is just the teacher in me that is hooked on the semantics of the terms. Best of luck in your endeavors as a company. I am rooting for you!

    August 27, 2010 at 9:32 am
  • Steve Spangler Reply

    Barbara – I wanted to post the link of your site…

    I think what you’re doing is amazing. I would agree with Julie that it’s actually a form of “reusing” and not really “recycling” as we think of it in more scientific terms. The general public uses the term “recycle” for anything that we “reuse.” From a marketing standpoint, the term recycle is better understood and has greater meaning to the public.

    Thanks for the comment. Can’t wait to share what you’re doing in an upcoming presentation on eco-science.

    August 27, 2010 at 9:43 am
  • Brenda Reply

    Great visual to get that learning into their heads! What should I do with the acetone/styrene mixture once I’m done? Can I separate the styrene out (was that the ball you guys showed?) Will the acetone that’s left still be useable for anything or should it be disposed of?
    Thanks for your wonderful ideas!

    August 30, 2010 at 7:51 am
  • Julie Gintzler Reply

    Hey Brenda -The most earth-friendly way to dispose of the liquid is to bring it to a place that does solvent recovery. You would have to do a google search to find one in your area. It can go down the drain, if it is a small amount, but it is very difficult for your water reclamation plant to reclaim that water, so I would keep it to a minimum if that is your disposal of choice.

    August 30, 2010 at 1:45 pm
  • Keith Haag Reply

    We Recycle Styrofoam,don’t throw it away bring it to me

    January 21, 2011 at 4:12 am
  • Bruce Clark Reply

    I am trialling the acetone breakdown for remoulding into toy componants. ATM just trialing acetone/PT. So far its proved a success. Later down the track i will attempt to use broken pen ink to dye it. I have seen 4 ways to reuse styrofoam.
    1. break it down via rubbing and reuse in sealed bags as packaging
    2. Acetone and remould it (toy parts, picture frames)
    3. EPS foam densifier
    4. moulded products for cornices, picture frames etc

    March 28, 2011 at 8:09 pm
  • Mary Sarah Reply

    I just wanted to say that there is a brand new Recycling Product called a Styrofoam Densifier which melts the Styrofoam in a ratio of 90:1 into a “rope-patty.” The Styrofoam is then bought back by the company that manufactures the densifiers, and the “recycled” styrofoam is transformed into eye-glass and picture frames, fencing, bio-degrageable containers, ets. Fascinating stuff!

    April 29, 2011 at 11:36 am
  • business recycling Reply

    Thanks for this post. So many people don’t know what to do with styrofoam so this really helps out the cuase

    July 28, 2011 at 5:01 am
  • Conundrum Reply

    Or mix your liquid polymer with glow powder and make glowing ornaments etc.


    I also came up with the idea of using it as a poor man’s PCB material by embedding copper wires in the surface and then using low melt 59C alloy to connect parts.

    Plus you can repair it using a hair drier and recycle the materials over and over !!!

    Its very translucent in thin layers and can also be used as a dielectric for capacitors once dry, as well as a base for supercapacitors when mixed with activated charcoal and graphite lock lubricant.

    November 1, 2011 at 3:04 am
  • Maryann Reply

    The nail polish remover MUST be 100% PURE acetone. We did this experiment with regular nail polish remover (which had acetone as main ingredient, but also several other ingredients) and it didn’t work. But when we redid with 100% pure acetone the styrofoam bubbled and dissolved immediately

    December 28, 2011 at 7:43 pm
  • Quora Reply

    Is there a way to recycle EPS foam in the SF Bay Area?…

    Styrofoam cannot be recycled, only re-used. On the other hand, using acetone you can de-expand (deflate?) the styrofoam to regular styrene, thus reducing it to much less than 1% it’s original size. And I think then you can recycle the styrene but I’m…

    January 13, 2012 at 3:30 pm
  • Elisa Reply

    this is incredible! thank you!

    i have worked with my workplace cafeteria to allow me to bring in my own reusable clean container for food instead of having to be served into a styrofoam, and my next battle is to get them to switch entirely to reusable containers (we all eat in our offices…)

    can you put a photo on this page so i can share with pintrest?

    March 10, 2012 at 9:19 am
  • Susan Wells Reply

    Thank you so much Elisa ! I have added some photos for Pinterest. Thanks so much for sharing it with your followers. Did you know you can also Pin video? Click the Pin It button on your browser and it will offer the video as well. Thanks again!

    March 12, 2012 at 10:48 am
  • Foam Packing Peanuts « Aunty's Tea Room Reply

    […] Vaporize it – There are different types of styrofoam and here are simple and awesome ways you can reduce them!  I had no idea. […]

    May 8, 2012 at 5:40 am
  • lily Reply

    i’m gald to see so many people are concerning the styrofoam recycling and reusing. because my company is a specialist who can provide total solution to waste styrofoam recycling and reusing. if you are interested , plz link and to learn more.

    June 18, 2014 at 2:48 am

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