Advanced search
1 file | 301.46 KB Add to list

Enhanced disinfection efficiencies of solar irradiation by biogenic silver

(2012) ANNALS OF MICROBIOLOGY. 62(1). p.187-191
Author
Organization
Project
Abstract
Solar disinfection (SODIS) is a very inexpensive and easy-to-run water-treatment process that is widely used in third world countries to decrease the number of waterborne diseases and mortality. However, it does have a number of disadvantages, including the long time needed for complete disinfection, especially during cloudy days, and the possible regrowth of germs during subsequent storage of the water. We tested whether the addition of low concentrations of biogenic silver, which is nanosilver produced on a bacterial scaffold of Lactobacillus fermentum, to the treatment process would improve the disinfection process in general and, more specifically, retard the growth of germs during water storage. Biogenic silver was found to accelerate the inactivation of Escherichia coli by SODIS by approximately twofold. This effect was more pronounced during the first 3 h of the disinfection process and was better than when TiO2 was added. Biogenic silver which was immobilized on zeolite or polysulphone (PSF) to create a reusable formulation enhanced SODIS during the first 3 h, with the Ag-PSF formulation giving the best results. Ag-PSF released silver more slowly to the surrounding water, making it a more suitable formulation for drinking water disinfection, and it prevented germ regrowth during storage of the treated water.
Keywords
Drinking water, Nanoparticles, SODIS, Biological synthesis, PHOTOINACTIVATION, TIO2, SUNLIGHT, NANOPARTICLES, DRINKING-WATER, ESCHERICHIA-COLI, WATER DISINFECTION

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 301.46 KB

Citation

Please use this url to cite or link to this publication:

MLA
Sintubin, Liesje, Aymere Assayie, YingYing Wang, et al. “Enhanced Disinfection Efficiencies of Solar Irradiation by Biogenic Silver.” ANNALS OF MICROBIOLOGY 62.1 (2012): 187–191. Print.
APA
Sintubin, L., Assayie, A., Wang, Y., van der Ha, D., & Verstraete, W. (2012). Enhanced disinfection efficiencies of solar irradiation by biogenic silver. ANNALS OF MICROBIOLOGY, 62(1), 187–191.
Chicago author-date
Sintubin, Liesje, Aymere Assayie, YingYing Wang, David van der Ha, and Willy Verstraete. 2012. “Enhanced Disinfection Efficiencies of Solar Irradiation by Biogenic Silver.” Annals of Microbiology 62 (1): 187–191.
Chicago author-date (all authors)
Sintubin, Liesje, Aymere Assayie, YingYing Wang, David van der Ha, and Willy Verstraete. 2012. “Enhanced Disinfection Efficiencies of Solar Irradiation by Biogenic Silver.” Annals of Microbiology 62 (1): 187–191.
Vancouver
1.
Sintubin L, Assayie A, Wang Y, van der Ha D, Verstraete W. Enhanced disinfection efficiencies of solar irradiation by biogenic silver. ANNALS OF MICROBIOLOGY. 2012;62(1):187–91.
IEEE
[1]
L. Sintubin, A. Assayie, Y. Wang, D. van der Ha, and W. Verstraete, “Enhanced disinfection efficiencies of solar irradiation by biogenic silver,” ANNALS OF MICROBIOLOGY, vol. 62, no. 1, pp. 187–191, 2012.
@article{2068897,
  abstract     = {Solar disinfection (SODIS) is a very inexpensive and easy-to-run water-treatment process that is widely used in third world countries to decrease the number of waterborne diseases and mortality. However, it does have a number of disadvantages, including the long time needed for complete disinfection, especially during cloudy days, and the possible regrowth of germs during subsequent storage of the water. We tested whether the addition of low concentrations of biogenic silver, which is nanosilver produced on a bacterial scaffold of Lactobacillus fermentum, to the treatment process would improve the disinfection process in general and, more specifically, retard the growth of germs during water storage. Biogenic silver was found to accelerate the inactivation of Escherichia coli by SODIS by approximately twofold. This effect was more pronounced during the first 3 h of the disinfection process and was better than when TiO2 was added. Biogenic silver which was immobilized on zeolite or polysulphone (PSF) to create a reusable formulation enhanced SODIS during the first 3 h, with the Ag-PSF formulation giving the best results. Ag-PSF released silver more slowly to the surrounding water, making it a more suitable formulation for drinking water disinfection, and it prevented germ regrowth during storage of the treated water.},
  author       = {Sintubin, Liesje and Assayie, Aymere and Wang, YingYing and van der Ha, David and Verstraete, Willy},
  issn         = {1590-4261},
  journal      = {ANNALS OF MICROBIOLOGY},
  keywords     = {Drinking water,Nanoparticles,SODIS,Biological synthesis,PHOTOINACTIVATION,TIO2,SUNLIGHT,NANOPARTICLES,DRINKING-WATER,ESCHERICHIA-COLI,WATER DISINFECTION},
  language     = {eng},
  number       = {1},
  pages        = {187--191},
  title        = {Enhanced disinfection efficiencies of solar irradiation by biogenic silver},
  url          = {http://dx.doi.org/10.1007/s13213-011-0245-2},
  volume       = {62},
  year         = {2012},
}

Altmetric
View in Altmetric
Web of Science
Times cited: