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 <[email protected]>
To: Discussion of biomass cooking stoves <[email protected]>
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:[email protected]
[email protected]
http://www.nariphaltan.org
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