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Deactivation of E. coli in water using Fe3+-saturated montmorillonite impregnated filter paper
- Source :
- Science of The Total Environment. 652:643-650
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- In areas with high exposure to pathogen contaminated water and lack the economic means for water treatment, low cost and convenient point-of-use drinking water disinfection materials/devices are essential. Using a simple craft paper making method, Fe3+-saturated montmorillonite impregnated filter paper was constructed to filter live Escherichia coli (E. coli)-spiked water. The Scanning Electron Microscopic images of the E. coli cells in contact with the Fe3+-saturated montmorillonite impregnated filter paper showed: 1) Fe3+-saturated montmorillonite particles were uniformly coated on the cellulose paper fiber, creating large mineral surface for cell contact; and 2) E. coli cell membrane was dehydrated and damaged, resulting cell deactivation upon contacting with the Fe3+-saturated montmorillonite particles impregnated in the paper. The E. coli cells passing through the Fe3+-saturated montmorillonite impregnated filter paper were not viable as further confirmed by the microfluidic dielectrophoresis analysis. They remained non-viable at room temperature even after 5 days, as shown by the results from both the Colony Counting test and the Colilert test. More than 99.5% deactivation efficiency was achieved when the ratio of the volume of the E. coli contaminated water to the mass of Fe3+-saturated montmorillonite was maintained at
- Subjects :
- inorganic chemicals
Environmental Engineering
010504 meteorology & atmospheric sciences
Filter paper
Scanning electron microscope
010501 environmental sciences
01 natural sciences
Pollution
Filter (aquarium)
chemistry.chemical_compound
Montmorillonite
Membrane
chemistry
Environmental Chemistry
Water treatment
Fiber
Cellulose
Waste Management and Disposal
0105 earth and related environmental sciences
Nuclear chemistry
Subjects
Details
- ISSN :
- 00489697
- Volume :
- 652
- Database :
- OpenAIRE
- Journal :
- Science of The Total Environment
- Accession number :
- edsair.doi...........71a3b8f9907844f05dbafe7709639c25