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Sparingly soluble constant carbonate releasing inert monolith for enhancement of antimicrobial silver action and sustainable utilization
Jakka Ravindran Swathy, Chennu Sudhakar, Avula Anil Kumar,
Published in American Chemical Society
2016
Volume: 4
   
Issue: 7
Pages: 4043 - 4049
Abstract
Silver, a metal with phenomenal commercial importance has been exploited in its ionic form in the field of water purification, with the objective of delivering microbially safe drinking water. Silver released at such concentrations is unrecoverable and has to be reduced to ensure sustainable utilization of the metal. We have shown that small concentrations of carbonate can effectively bring down the amount of silver ion used for microbial disinfection by half. Implementation of this finding requires constant carbonate releasing materials in natural water for an extended period. In this work, we describe a hybrid material with intrinsically high stability in water that is prepared using naturally abundant ingredients which releases carbonate constantly and in a controlled fashion. This composition in conjunction with reduced silver ion concentration delivers mircobially safe water, tested with E. coli and MS2 phage. Use of constant carbonate releasing material for antimicrobial applications can reduce the unrecoverable silver released into the environment by ∼1300 tons/year. We also show that the composition can be modified to release cations of choice without disturbing the CO32- release from the same. A sustained release of selective cations along with carbonate can supplement drinking water with the minerals of interest. © 2016 American Chemical Society.
About the journal
JournalData powered by TypesetACS Sustainable Chemistry and Engineering
PublisherData powered by TypesetAmerican Chemical Society
ISSN21680485
Open AccessNo
Concepts (17)
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    Carbonation
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    Disinfection
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    Escherichia coli
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    Hybrid materials
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    Metal ions
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    Microorganisms
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    Positive ions
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    Potable water
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    Purification
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    Water
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    Water treatment plants
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    Anti-microbial activity
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    CARBONATE MATERIALS
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    DRINKING WATER PURIFICATION
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    SUSTAINABLE RELEASE
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    SYNERGETIC EFFECT
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    Chemicals removal (water treatment)