Making a water filter using a microwave and sugar

webwriter Marina Vance @marinavance explains….

Silver nanoparticles (AgNPs) are becoming increasingly popular due to their antimicrobial properties. In fact, silver compounds have been used to treat or prevent infections since before penicillin was ever discovered. The ability of AgNPs to kill microorganisms brings great potential for treating drinking water in situations when traditional water treatment is not possible.

Roughly 10% of the world’s population does not have access to safe, clean drinking water because basic sanitation is lacking. In some cases, a point-of-use (aka in-your-home) water treatment method that is easy and affordable might make a great difference in preventing or reducing the incidence of diseases caused by water-borne microbes, such as cholera and poliomyelitis. A water filter that is embedded with a small amount of AgNPs is a great example of a point-of-use treatment method that can be easily distributed to homes in developing countries and used with minimal training.

In this paper, T. Dankovich, from the University of Virginia, presents us an elegant method for creating paper filters that are embedded with silver nanoparticles. Her method can be considered more environmentally friendly than usual silver nanoparticle synthesis techniques because the reducing agent is glucose (that’s right, sugar!) and the heating technique involved nothing more than a domestic microwave oven (that’s right, a kitchen microwave!). In this technique, silver nanoparticles were synthesized directly on the paper filters, as opposed to being synthesized in a liquid suspension and then applied onto the filter. This method avoids the potential pitfall of nanoparticle aggregation during application onto the filter.

The paper filters were successful treating water containing two different types of bacteria (E. coli, and E. faecalis). Moving forward, it will be interesting to know the efficiency of this type of filter in treating real surface water samples and the filtering capacity, or how many liters of water each filter is capable of treating before it needs to be replaced.

To access the full article, download a copy for free* by clicking the link below.

Microwave-assisted incorporation of silver nanoparticles in paper for point-of-use water purification
DOI: 10.1039/c4en00067f
Theresa A. Dankovich

Liked this blog? Find out more about Marina in her first Environmental Science Nano blog on carbon nanotubes.

* Access is free through a registered RSC account – click here to register

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5 Responses to “Making a water filter using a microwave and sugar”

  1. Drew says:

    This is really interesting! I’m pretty happy with my water filter but I might just have to try this to see how it works. Thanks for sharing.

  2. Alan Ron says:

    I was just searching on the internet for eco-friendly techniques to make a water filter and came across your blog post. The idea is amazing. It does not require extra cost as compared to other techniques, I had seen. I hope this might work well and I can get pure water same as my water filter.

  3. Great tips, very eco friendly. I have to try this at home to see the results. I’ve been using water filter eversince, https://ringhotwater.com.au/ and my water is soft and clean. You may visit their site for more info.

  4. abirami says:

    A solid block carbon water filter can selectively remove dangerous contaminants from drinking water while
    retaining healthy mineral deposits that balance the pH of drinking water. RO Water Purifiers in Chennai

  5. Iqbal Khan says:

    Nice Idia. the easiest way to get filter water at home. nice keep it up.

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