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Cheap Nanotech Filter Clears Hazardous Microbes and Chemicals from Drinking Water
Scientific American ^ | May 7, 2013 | Luciana Gravotta

Posted on 05/07/2013 6:07:43 PM PDT by neverdem

A $16 device could provide a family of five with clean water for an entire year

About 780 million people—a tenth of the world’s population—do not have access to clean drinking water. Water laced with contaminants such as bacteria, viruses, lead and arsenic claims millions of lives each year. But an inexpensive device that effectively clears such contaminants from water may help solve this problem.

Thalappil Pradeep and his colleagues at the Indian Institute of Technology Madras developed a $16 nanoparticle water filtration system that promises potable water for even the poorest communities in India and, in the future, for those in other countries sharing the same plight. Although cheap filtration systems have been developed previously, this is the first one to combine microbe-killing capacity with the ability to remove chemical contaminants such as lead and arsenic. Because the filters for microbes and chemicals are separate components, the system can be customized to rid water of microbial contaminants, chemical contaminants or both, depending on the user’s needs...

(Excerpt) Read more at scientificamerican.com ...


TOPICS: Health/Medicine; Science
KEYWORDS: filter; nanotechnology; potablewater; preppers

1 posted on 05/07/2013 6:07:43 PM PDT by neverdem
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To: yefragetuwrabrumuy

Hat tip!


2 posted on 05/07/2013 6:09:51 PM PDT by neverdem (Register pressure cookers! /s)
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To: Kartographer

ping


3 posted on 05/07/2013 6:10:41 PM PDT by driftdiver (I could eat it raw, but why do ithat when I have a fire.)
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To: neverdem

I hope these become widely available. If the SHTF most deaths will occur from drinking contaminated water.


4 posted on 05/07/2013 6:11:01 PM PDT by ez (Muslims do not play well with others.)
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To: neverdem

A few of these filters in a community could reduce illnesses by yards and yards. If they work well.....


5 posted on 05/07/2013 6:12:27 PM PDT by count-your-change (you don't have to be brilliant, not being stupid is enough)
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To: neverdem

Silver nano particles to the rescue!


6 posted on 05/07/2013 6:14:39 PM PDT by exit82 ("The Taliban is on the inside of the building" E. Nordstrom 10-10-12)
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To: ez

You can get ceramic filters from several prepper sites that use the same basic components as the Berkey systems for $30. I’ll post a link when I’m on a regular computer. You have to build it yourself and supply the buckets.

I’ve ordered 2. I plan to build one and see how well it works on the stream across from my house by having the before and after tested. If it isn’t perfect I’ll add iodine to the list for extra safety.


7 posted on 05/07/2013 6:18:06 PM PDT by mnehring
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To: neverdem

I think I would choose the “both” option even if I wasn’t sure I needed them.


8 posted on 05/07/2013 6:18:13 PM PDT by yarddog (Truth, Justice, and what was once the American Way.)
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To: neverdem

Great news!

Get it to market before the Gen21/Marxist left sinks their claws into its distribution.


9 posted on 05/07/2013 6:21:54 PM PDT by MichaelCorleone (Keep your eyes on Jesus. He is the same yesterday, today, and forever.)
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To: neverdem

Fine work!


10 posted on 05/07/2013 6:26:01 PM PDT by SueRae (It isn't over. In God We Trust.)
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To: mnehring

I’ll be updating for your link. Thanks.


11 posted on 05/07/2013 6:28:55 PM PDT by CaptainK (...please make it stop. Shake a can of pennies at it.)
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To: neverdem

Bump!


12 posted on 05/07/2013 6:32:05 PM PDT by mcmuffin (Freedom's On The March - Wave Goodbye!)
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To: call meVeronica

Bump


13 posted on 05/07/2013 6:32:22 PM PDT by call meVeronica
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To: ez

Just what I was thinking. If the price becomes reasonable, it wouldn’t be a bad idea to stock up with some of these in case there’s a major power outage or other threats to the water supply. A lot less trouble than rooms full of bottled water.


14 posted on 05/07/2013 6:33:02 PM PDT by Cicero (Marcus Tullius)
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To: FReepers
Looking For Donors


Click The Pic

Are You One?

15 posted on 05/07/2013 6:42:03 PM PDT by DJ MacWoW (My faith and politics cannot be separated)
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To: neverdem

Man, we could use these in Florida. The water in this state tastes and smells so crappy.


16 posted on 05/07/2013 6:43:52 PM PDT by princeofdarkness (The GOP is the present version of 1940 France and it will only get worse.)
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To: mnehring

Thanks. I have the ceramic candle used in the Berkeley filters. I think I paid almost $50 for it though. And it does no good against minerals, although it’s great for removing dangerous microbes.
This filter here sounds more efficient.


17 posted on 05/07/2013 6:44:12 PM PDT by ez (Muslims do not play well with others.)
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To: neverdem

There is a very inexpensive, effective and reliable filter that was long used in old Mexico. If you take a large block of limestone, hollow out its interior, and carve the lower side to a point, many contaminants are eliminated as water slowly seeps through the rock. Calcium and sometimes magnesium are added.

This is what it looks like in practice:

http://www.youtube.com/watch?v=OvwtpbMF3v0

Here is a two stage limestone filter:

http://i.imgur.com/SecVESo.jpg


18 posted on 05/07/2013 6:45:08 PM PDT by yefragetuwrabrumuy (Best WoT news at rantburg.com)
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To: neverdem

Please make a whole house filter. I’ll pay more than $16.


19 posted on 05/07/2013 7:03:41 PM PDT by Selene
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To: yefragetuwrabrumuy

Thanks for the links!


20 posted on 05/07/2013 7:06:47 PM PDT by neverdem (Register pressure cookers! /s)
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sfl


21 posted on 05/07/2013 7:07:24 PM PDT by phockthis (http://www.supremelaw.org/fedzone11/index.htm ...)
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To: princeofdarkness

I grew up in DeFuniak Springs and the water was the best I have ever tasted. I remember when the large Coca-Cola bottling plant turned out so many cokes that I would see their bottles all over the South.

Everyone said Coca-Cola located it their because of the water.

Now my Sister lives in Ft. Walton Beach and their water tastes awful. Panama City Bch is nearly as bad but Panama City is generally OK.

Any of the panhandle towns along the I-10 corridor generally have good water.


22 posted on 05/07/2013 7:09:55 PM PDT by yarddog (Truth, Justice, and what was once the American Way.)
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To: mnehring; ez
A ceramic filter from Amazon.

Please ping me when you get the results of your before and after test.

Firehouse Subs uses food-grade five gallon buckets for their pickles. They sell the buckets for a nominal sum ($2/ea as I recall) and the money goes to a charity.

With two of these buckets you can set up a gravity filter system. Drill two holes in the bottom of one bucket for the candles. Put a couple of 2x4's on the other bucket. Put the candle bucket on top of the 2x4. Water into the top bucket will be filtered and drizzle into the bottom bucket.

23 posted on 05/07/2013 7:12:10 PM PDT by upchuck (To the faceless, jack-booted government bureaucrat who just scanned this post: SCREW YOU!)
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To: CaptainK; ez
Here it is.

http://www.cheaperthandirt.com/product/CAMP-352

$29.97 from Cheaper Than Dirt. The filter is a lot larger than how it looks here. You basically put these in food-safe buckets, drilling the hole in the top bucket for the filter and the bottom for the spigot. The filter adapter is the same size and type as a Berkey so they can be interchanged with Berkey replacement filters. The included filter is also silver impregnated to add an extra bacteria killing element. Being .5 micron, it supposedly removes many heavy metals.

Here is a YouTube on putting it together and more info..

24 posted on 05/07/2013 7:13:37 PM PDT by mnehring
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To: mnehring
I have one and it works fine. I had to get it from Amazon. What irks me was I tried to buy it from Cheaper Than Dirt and the SOB’s refused my order because it was from California? I know a lot places won't ship ammo but a water filter?
25 posted on 05/07/2013 7:22:32 PM PDT by Polynikes (What would Walt Kowalski do. In the meantime "GET OFF MY LAWN")
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To: Polynikes

It is the damn credit card processors and Paypal. They have started refusing transactions for certain states from companies like CTD. Luckly Amazon is so blanket and you can get almost everything like this there.

However, there would be absolutely nothing illegal about having someone from out of State buy it and ship it to you. It isn’t a controlled item.


26 posted on 05/07/2013 7:29:34 PM PDT by mnehring
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To: Polynikes
I tried to buy it from Cheaper Than Dirt and the SOB’s refused my order because it was from California? I know a lot places won't ship ammo but a water filter?

As you probably already know, if you sell to anyone in California you will be harrassed by California Franchise Tax Board. Unless you sell a LOT of stuff in California it is not worth the cost and hassle to do business here. Sucks but I don't blame them.

27 posted on 05/07/2013 7:30:32 PM PDT by eldoradude (Let's water the tree of liberty with THEIR blood...)
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To: reed13

Bfl


28 posted on 05/07/2013 7:33:19 PM PDT by reed13k (For evil to triumph it is only necessary for good men to do nothing.)
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To: Polynikes

Looks like you can get them directly from Monolithic cheaper than CTD (you just have to buy each component separately. Save about $10 off the CTD price.

http://shop.monolithic.com/collections/water-filters-collection


29 posted on 05/07/2013 7:33:52 PM PDT by mnehring
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To: yarddog

I grew up in NYC. Their municipal water was noted as one of the best in the world. The water was really very good up until the 90’s. Somehow the quality went downhill and I can’t explain it. The city gets its water from the Catskill reservoirs.


30 posted on 05/07/2013 7:35:14 PM PDT by princeofdarkness (The GOP is the present version of 1940 France and it will only get worse.)
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To: neverdem

bttt


31 posted on 05/07/2013 7:43:55 PM PDT by ChildOfThe60s (If you can remember the 60s.....you weren't really there)
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To: neverdem

Bump


32 posted on 05/07/2013 9:46:07 PM PDT by Cold Heart
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To: princeofdarkness

Mostly old sewage treatment plants dumping into those reservoirs and runoff. Ummmm...tasty!


33 posted on 05/07/2013 9:56:34 PM PDT by count-your-change (you don't have to be brilliant, not being stupid is enough)
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To: neverdem

You realize of course that the $16.00 figure only refers to the actual makeup of the product, when pushed into production the cost will necessarily increase to $16,000.00 per gallon of water produced.


34 posted on 05/07/2013 10:48:59 PM PDT by itsahoot (It is not so much that history repeats, but that human nature does not change.)
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To: appalachian_dweller; OldPossum; DuncanWaring; VirginiaMom; CodeToad; goosie; kalee; ...

Preppers’ PING!!


35 posted on 05/08/2013 5:50:51 AM PDT by Kartographer ("We mutually pledge to each other our lives, our fortunes and our sacred honor.")
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To: princeofdarkness

The water starts out in the reservoir. Then it gets treated with chemicals before being run through a few hundred miles of pipe. Pipe that is decades old, rusty, leaky and maintained by the best union labor available.


36 posted on 05/08/2013 5:57:34 AM PDT by driftdiver (I could eat it raw, but why do ithat when I have a fire.)
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To: neverdem

A good Katadyn personal water filter costs $300+ and to be safe you should still chemically treat the water for viruses. This new technology would be a great, cheap alternative solution if brought into mass production.


37 posted on 05/08/2013 5:59:34 AM PDT by Obadiah (High speed, low drag.)
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To: mnehring
You can get ceramic filters from several prepper sites that use the same basic components as the Berkey systems for $30. I’ll post a link when I’m on a regular computer. You have to build it yourself and supply the buckets.

I have just such a system ready to roll. It took some reearch but it works great...and was very short money to set up.

With three 55 gallon plastic barrels hooked in series via a rack system...replenished with filtered rainwater...I'll have no shortage of potable water. And 165 gallons under 1G provides plenty of pressure.

38 posted on 05/08/2013 8:55:52 AM PDT by Bloody Sam Roberts (For me, I plan to die standing as a free man rather than spend one second on my knees as a slave.)
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To: neverdem
I know I'm beginning to sound like a broken record on these threads, but once again, I'd suggest a slow sand filter (aka biosand filter) as a first-stage filter to get the biggest of the nasties out of the water and leave this to pick up where the slow sand filter leaves off.

To build a slow sand filter, the details are available at http://www.cawst.org/en/resources/pubs/training-materials/file/186-biosand-filter-for-technicians-manual-eng or you can just poke a hole in the bottom of a 5-gallon pail, fill the bottom inch or so of the pail with gravel, fill the rest of the pail with sand, and that's it.

There's more to building a using a working biosand filter, but that's the simplest setup.

39 posted on 05/08/2013 9:10:38 AM PDT by Stegall Tx (Teaching part time and enjoying it. I just can't afford it!)
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To: null and void

Invented it huh. hmmm.


40 posted on 05/08/2013 10:26:48 AM PDT by Shimmer1 (I may be drunk, but in the morning I will be sober and you will still be ugly. (Churchill))
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To: Shimmer1

This is why I like Indians...


41 posted on 05/08/2013 11:12:25 AM PDT by null and void (Republicans create the tools of oppression and Democrats use them. Gun confiscation enables tyranny.)
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To: Kartographer

Sounds good. Hope they get it on the market soon. I have a well, and filters that fit on the faucet. We also keep several cases of bottled water on hand, and each sink has some water in soda bottles for hand washing etc.

I keep a bunch of those personal hygiene packets of wipes that they use in hospitals on hand to use in case there’s a need to conserve water and limit showers. Then there’s the hot water heater water. Then there’s the rainwater collected.

When Hubby gets the swimming pool set up and diverts the rain water to it, we’ll have about 4,000 gallons in that all by itself.
Have several filters, but it wouldn’t hurt to get more.


42 posted on 05/08/2013 6:48:05 PM PDT by greeneyes (Moderation in defense of your country is NO virtue. Let Freedom Ring.)
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To: mnehring

“I’ll add iodine to the list for extra safety.”

A few drops of potassium iodide (SSKI) to a glass of water renders it safe.


43 posted on 05/08/2013 7:04:31 PM PDT by GGpaX4DumpedTea
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To: Cicero

“...it wouldn’t be a bad idea to stock up with some of these...”

Barter items after the SHTF...


44 posted on 05/08/2013 7:06:11 PM PDT by GGpaX4DumpedTea
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To: mnehring

Thanks for the info and links in this thread.


45 posted on 05/09/2013 7:21:01 AM PDT by ELS
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