Prof. Sirshendu De has been selected for the Innovation Award 2016
Posted on: 07 Mar 2016 12:34:44
07 March 2016 Current Affairs: Dr. Sirshendu De, Professor & Head, Department of Chemical Engineering has been selected for the Innovation Award 2016 for Developing Low Cost Eco-friendly Laterite based Arsenic Filter for Providing Safe Drinking Water by Indian Desalination Association (South Zone).A complete indigenous material developed at IIT Kharagpur, capable of adsorbing arsenic to the extent of 32mg / gm of material. It is made from naturally occurring red laterite soil. This material is undergone chemical treatment to enhance its capabilities to adsorb arsenic. dvantages like: (a) Ultra low cost of the filter media compared to available such filters, appropriate for the socio-economic conditions of our country, (b) Arsenic concentration of filtrate is always within the WHO drinking water permissible limit, independent of the ground water concentration (c) Extremely long life of the filters (about five years), (d) No regeneration of the adsorbent (filter medium) is required during its lifetime, (e) No power requirement for the household filter, (f) Removal of arsenic (below 10 ppb), iron (below 0.3 ppm) and bacteriological contamination (more than 98%) together in a single unit, (g) Upon exhaustion of the filter, the filter medium can be safely dumped without any risk of leaching and further contamination, (h) The capacity of domestic filter is in the range of 80-100 litres/day, (i) Easy operation and maintenance free, as the filter does not require any regeneration or backwashing, (j) Cost of the treated water is less than 3 paisa/liter.
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