[Stoves] A simple water sterilization technique

[Charlie Sellers]

Thank you for that great reference on improved investigations into this simple approach!  We looked into the use of sari cloth filtration when we explored methods to use when constructing slow sand filters for an EWB project, where we needed to effectively sieve the media so that it had the right particle size distribution.  The information we had available to us concerned just mechanical filtration aspects:
http://www.nytimes.com/2011/09/27/health/27sari.html?_r=0

and as a materials scientist I especially liked their electron microscope images, showing the differences between new and used sari materials (showing openings on the order of ~20 microns):
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC298724/?tool=pmcentrez


But the bottom line is that locally available materials/methods worked for them in Bangladesh, and now the addition of heating the water afterwards can lead to even further improvements in the approach's efficacy.






________________________________
 From: nari phaltan <nariphaltan at gmail.com>
To: Discussion of biomass cooking stoves <stoves at lists.bioenergylists.org> 
Sent: Friday, February 8, 2013 4:20 PM
Subject: [Stoves] A simple water sterilization technique
 

Hello stovers,

One of the major problems of rural areas is unavailability of clean drinking water. A simple method of filtration and heating it to 55-60 degrees Celsius can remove all bacteria. The paper is at; http://www.currentscience.ac.in/php/forthcoming/RC494.pdf

And the news item is at; http://www.firstpost.com/fwire/sari-sun-combo-can-sterilise-dirty-water-619304.html?utm_source=fwire&utm_medium=hp

Cheers.

Anil



-- 
Nimbkar Agricultural Research Institute (NARI)
Tambmal, Phaltan-Lonand Road
P.O.Box 44
Phaltan-415523, Maharashtra, India
Ph:91-2166-222396/220945
e-mail:nariphaltan at gmail.com
          anilrajvanshi at gmail.com

http://www.nariphaltan.org


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