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#281704 - 08/15/16 03:59 PM Gadget Grabs More Solar Energy to Disinfect Water
Doug_Ritter Offline

Pooh-Bah

Registered: 01/28/01
Posts: 2197
SLAC, Stanford Gadget Grabs More Solar Energy to Disinfect Water Faster

https://www6.slac.stanford.edu/news/2016...ter-faster.aspx
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#281705 - 08/15/16 04:51 PM Re: Gadget Grabs More Solar Energy to Disinfect Water [Re: Doug_Ritter]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 7705
Loc: southern Cal
really fascinating! Hope it comes to market soon....
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#281709 - 08/15/16 07:31 PM Re: Gadget Grabs More Solar Energy to Disinfect Water [Re: Doug_Ritter]
Phaedrus Offline
Carpal Tunnel

Registered: 04/28/10
Posts: 3148
Loc: Big Sky Country
Rocket science type stuff! I also would love to see it come to market.
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#281710 - 08/15/16 07:32 PM Re: Gadget Grabs More Solar Energy to Disinfect Water [Re: Doug_Ritter]
gonewiththewind Offline
Veteran

Registered: 10/14/08
Posts: 1517
I like it!

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#281904 - 08/29/16 08:31 PM Re: Gadget Grabs More Solar Energy to Disinfect Water [Re: Doug_Ritter]
voyaginator Offline
Stranger

Registered: 04/21/16
Posts: 8
There is a commercial product, the Puralytics solar water purifier made with a msh of titanium dioxide.
Depending on the intensity of the sunlight, it takes 2 to 4 hours for the blue color dye to disappear and indicate that the water is safe to drink.

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#282011 - 09/04/16 08:32 PM Re: Gadget Grabs More Solar Energy to Disinfect Water [Re: Doug_Ritter]
WesleyH Offline
Member

Registered: 05/26/16
Posts: 101
Loc: Unknown
Sounds interesting save for a couple of things:

1. Limitations associated with turbid water. Seem self apparent and quite limitating in survival situations. However, the presence of turbid material also harbor bacteria and present more surface area to anchor bacteria and protect it as wel.

2. Unusable in low light situations. . Consider night or cloudy situations. . .

3. Apparently the device depends on DISSOLVED oxygen for the production of Hydrogen peroxide and free radicals. Depending on the content of the water, it would likely not decontaminate water with toxic compounds present, nor does it appear to mention differing concentrations of bacteria, viral components and other biological matter present.

Sounds perfect for clear water in a stream on a sunny day. .
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