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Title: Magnetically Recoverable and Reusable Antimicrobial Nanocomposite Based on Activated Carbon, Magnetite Nanoparticles, and Silver Nanoparticles for Water Disinfection

Abstract

Recent advancements in nanotechnology have led to the development of innovative, low-cost and highly efficient water disinfection technologies that may replace or enhance the conventional methods. In this study, we introduce a novel procedure for preparing a bifunctional activated carbon nanocomposite in which nanoscale-sized magnetic magnetite and antimicrobial silver nanoparticles are incorporated (MACAg). The antimicrobial efficacy of the nanocomposite was tested against Escherichia coli (E. coli). MACAg (0.5 g, 0.04% Ag) was found to remove and kill 10 6–10 7 CFU (colony-forming units) in 30 min via a shaking test and the removing and killing rate of the nanocomposites increased with increasing silver content and decreased with increasing CFU. The inhibition zone tests revealed, among the relevant components, only Ag nanoparticles and Ag + ions showed antimicrobial activities. The MACAg was easily recoverable from treated water due to its magnetic properties and was able to remove and kill 10 6 CFU after multiple-repeated use. The MACAg nanocomposite also demonstrated its feasibility and applicability for treating a surface water containing 10 5 CFU. Combining low cost due to easy synthesis, recoverability, and reusability with high antimicrobial efficiency, MACAg may provide a promising water disinfection technology that will find wide applications.

Authors:
 [1];  [1];  [2];  [1];  [1];  [3]
  1. United States Merchant Marine Academy, Kings Point, NY (United States). Math & Science Department
  2. Johns Hopkins Univ., Baltimore, MD (United States). Neuroscience Department
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Instrumentation Division
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1392216
Report Number(s):
BNL-114154-2017-JA
Journal ID: ISSN 2411-5134; KA
Grant/Contract Number:  
SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Inventions
Additional Journal Information:
Journal Volume: 2; Journal Issue: 2; Journal ID: ISSN 2411-5134
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; 36 MATERIALS SCIENCE; 54 ENVIRONMENTAL SCIENCES; silver nanoparticles; magnetite nanoparticles; activated carbon; nanocomposites; nanoadsorbents; water disinfection; water treatment; magnetic; antimicrobial; environmental applications

Citation Formats

Furlan, Ping, Fisher, Adam, Furlan, Alexander, Melcer, Michael, Shinn, David, and Warren, John. Magnetically Recoverable and Reusable Antimicrobial Nanocomposite Based on Activated Carbon, Magnetite Nanoparticles, and Silver Nanoparticles for Water Disinfection. United States: N. p., 2017. Web. doi:10.3390/inventions2020010.
Furlan, Ping, Fisher, Adam, Furlan, Alexander, Melcer, Michael, Shinn, David, & Warren, John. Magnetically Recoverable and Reusable Antimicrobial Nanocomposite Based on Activated Carbon, Magnetite Nanoparticles, and Silver Nanoparticles for Water Disinfection. United States. doi:10.3390/inventions2020010.
Furlan, Ping, Fisher, Adam, Furlan, Alexander, Melcer, Michael, Shinn, David, and Warren, John. Tue . "Magnetically Recoverable and Reusable Antimicrobial Nanocomposite Based on Activated Carbon, Magnetite Nanoparticles, and Silver Nanoparticles for Water Disinfection". United States. doi:10.3390/inventions2020010. https://www.osti.gov/servlets/purl/1392216.
@article{osti_1392216,
title = {Magnetically Recoverable and Reusable Antimicrobial Nanocomposite Based on Activated Carbon, Magnetite Nanoparticles, and Silver Nanoparticles for Water Disinfection},
author = {Furlan, Ping and Fisher, Adam and Furlan, Alexander and Melcer, Michael and Shinn, David and Warren, John},
abstractNote = {Recent advancements in nanotechnology have led to the development of innovative, low-cost and highly efficient water disinfection technologies that may replace or enhance the conventional methods. In this study, we introduce a novel procedure for preparing a bifunctional activated carbon nanocomposite in which nanoscale-sized magnetic magnetite and antimicrobial silver nanoparticles are incorporated (MACAg). The antimicrobial efficacy of the nanocomposite was tested against Escherichia coli (E. coli). MACAg (0.5 g, 0.04% Ag) was found to remove and kill 106–107 CFU (colony-forming units) in 30 min via a shaking test and the removing and killing rate of the nanocomposites increased with increasing silver content and decreased with increasing CFU. The inhibition zone tests revealed, among the relevant components, only Ag nanoparticles and Ag+ ions showed antimicrobial activities. The MACAg was easily recoverable from treated water due to its magnetic properties and was able to remove and kill 106 CFU after multiple-repeated use. The MACAg nanocomposite also demonstrated its feasibility and applicability for treating a surface water containing 105 CFU. Combining low cost due to easy synthesis, recoverability, and reusability with high antimicrobial efficiency, MACAg may provide a promising water disinfection technology that will find wide applications.},
doi = {10.3390/inventions2020010},
journal = {Inventions},
number = 2,
volume = 2,
place = {United States},
year = {Tue Jun 06 00:00:00 EDT 2017},
month = {Tue Jun 06 00:00:00 EDT 2017}
}

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Works referenced in this record:

Science and technology for water purification in the coming decades
journal, March 2008

  • Shannon, Mark A.; Bohn, Paul W.; Elimelech, Menachem
  • Nature, Vol. 452, Issue 7185, p. 301-310
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