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Applicant:
Indian Institute of Technology (IIT) Madras 
Title:
A composition for enhanced biocidal activity and a water purification device based on the same 
Inventor(s):
Dr. Pradeep T 
Applicant:
Indian Institute of Technology (IIT) Madras 
Application type:
Granted - 2020-02-17 
Application Number:
332218 
Applied at:
India 
Entered by:
Indian Institute of Technology (IIT) Madras 
Abstract:
The present invention discloses a composition based on Mn+ and CO3 2 - as well as Mn+ and SiO3 2 - for enhanced biocidal property of transition metal ions in water, especially biocidal property of silver and copper wherein the composition comprises of Na2CO3 or K2CO3 as a source for CO3 2 -. Composition in its individual capacity (either Mn+ or CO3 2 - or SiO3 2 - alone) doesn't offer significant biocidal ability in diverse conditions of drinking water quality. However, when two components are combined (Mn+ and CO3 2 - represented as Mn+ / CO3 2 - the composition offers new and improved antimicrobial properties which are hitherto unknown. Composition nullifies negative effects of various interfering species present in water on the biocidal property of silver. The composition (Mn+ / CO3 2 - and Mn+ / SiO3 2 - is demonstrated for use as a water purification device for the fast and complete inactivation of microorganisms and as a marker for the replacement of the water purification device upon is effective life. 

 
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