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Preprints
https://doi.org/10.5194/dwes-2020-23
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/dwes-2020-23
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  31 Jul 2020

31 Jul 2020

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This preprint is currently under review for the journal DWES.

Surface Water Purification using cellulose Paper Impregnated with Silver Nanoparticles

Shahad A. Raheem1 and Alaa H. Alfatlawi2 Shahad A. Raheem and Alaa H. Alfatlawi
  • 1College of Water Resources Engineering, Al-Qassim Green University, Hilla, Iraq
  • 2College of Engineering, University of Babylon, Hilla, Iraq

Abstract. The objective of this study is to prepare a cellulose paper was impregnated with silver nanoparticles (AgNPs) for the purpose of water purification (Disinfection (removal of Escherichia Coli, Staphylococcus Aureus, Enterococcus Faecalis, Enterobacter Aerogenes, Klebsiella Pneumoniae, and Proteus mirabilis) and filtration). AgNPs papers were prepared by chemical reduction of silver nitrate (AgNO3) with various concentrations (0.005 M, 0.015 M, 0.03 M, and 0.05 M) using sodium borohydride (NaBH4) as a reducing agent. Two ratios of NaBH4 / AgNO3 of 2 : 1 and 10 : 1 were used to show the effect of reduction on the formation and removal efficiencies of AgNPs. AgNPs papers were characterized using Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). An acid digestion using HCL acid followed by analyzing the samples in Atomic Absorption Spectrometer (ASS) was conducted to measure the silver concentration in AgNPs papers. TEM images showed that the silver nanoparticles size in the papers varies from 1.3 to 75 nm.

Water samples, after filtration through AgNPs papers, were analyzed using (ASS) to measure the silver concentration in the effluent water. AgNPs paper antibacterial efficiency ranged (99 % to 100 %) for both reduction ratios. The average silver content in the effluent water for the three replicates ranged from 0 to 0.082 mg/L which meets the United States- Environmental Protection Agency (US-EPA) guideline for drinking water of less than 0.1 mg/L Turbidity tests showed that these papers can be usefully used as a point of use filters as the turbidity reduced to less than 1 NTU.

Shahad A. Raheem and Alaa H. Alfatlawi

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Shahad A. Raheem and Alaa H. Alfatlawi

Shahad A. Raheem and Alaa H. Alfatlawi

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Short summary
This study is to prepare a cellulose paper was impregnated with silver nanoparticles (AgNPs) for the purpose of water purification (Disinfection (removal of several types of bacteria) and filtration). Sliver nanoparticles used in this work exhibit a broad size distribution with highly reactive facets. AgNPs paper provided rapid and effective bactericidal activity as the bacterially contamination.
This study is to prepare a cellulose paper was impregnated with silver nanoparticles (AgNPs) for...
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