scholarly journals Surface Water Purification using cellulose Paper Impregnated with Silver Nanoparticles

2020 ◽  
Author(s):  
Mona Soliman
Keyword(s):  
Silver Nanoparticles ◽  
Surface Water ◽  
Water Purification ◽  
Cellulose Paper

scholarly journals Surface Water Purification using cellulose Paper Impregnated with Silver Nanoparticles

2020 ◽  
Author(s):  
Shahad A. Raheem ◽  
Alaa H. Alfatlawi
Keyword(s):  
Electron Microscopy ◽  
Silver Nanoparticles ◽  
Water Purification ◽  
Environmental Protection Agency ◽  
Chemical Reduction ◽  
Enterobacter Aerogenes ◽  
The United States ◽  
Silver Concentration ◽  
Effluent Water ◽  
Cellulose Paper

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.

scholarly journals Surface-water purification using cellulose paper impregnated with silver nanoparticles

2021 ◽  
Vol 14 (1) ◽  
pp. 95-102
Author(s):  
Shahad A. Raheem ◽  
Alaa H. Alfatlawi
Keyword(s):  
Electron Microscopy ◽  
Silver Nanoparticles ◽  
Water Purification ◽  
Environmental Protection Agency ◽  
Chemical Reduction ◽  
The United States ◽  
Silver Concentration ◽  
Effluent Water ◽  
Cellulose Paper ◽  
Point Of Use

Abstract. The objective of this study is to prepare a cellulose paper that was impregnated with silver nanoparticles (AgNPs) for the purpose of water purification (disinfection and filtration). AgNP 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 for NaBH4/AgNO3 of 2:1 and 10:1 were used to show the effect of reduction on the formation and removal efficiencies of AgNPs. AgNP papers were characterized using scanning electron microscopy and transmission electron microscopy. An acid digestion using HCl acid followed by analyzing the samples in an atomic absorption spectrometer (ASS) was conducted to measure the silver concentration in AgNP papers. TEM images showed that the silver nanoparticle size in the papers varied from 1.3 to 75 nm. Water samples, after filtration through AgNP papers, were analyzed using ASS to measure the silver concentration in the effluent water. AgNP paper antibacterial efficiency ranged from 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−1, which meets the United States Environmental Protection Agency (US-EPA) guideline for drinking water of less than 0.1 mg L−1. Turbidity tests showed that these papers can be usefully used as point-of-use filters as the turbidity reduced to less than 1 NTU (Nephelometric Turbidity Units).

Pollutant removal mechanisms in a bio-diatomite dynamic membrane reactor for micro-polluted surface water purification

Desalination ◽  
2012 ◽  
Vol 293 ◽  
pp. 38-45 ◽  
Author(s):  
Huaqiang Chu ◽  
Bingzhi Dong ◽  
Yalei Zhang ◽  
Xuefei Zhou ◽  
Zhenxun Yu
Keyword(s):  
Surface Water ◽  
Water Purification ◽  
Membrane Reactor ◽  
Pollutant Removal ◽  
Dynamic Membrane ◽  
Removal Mechanisms

Enhancement of Efficiency of the Ural Region Surface Water Sources Water Treatment in Terms of Metal Ions and their Compounds

2012 ◽  
pp. 96-108
Author(s):  
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Metal Ions ◽  
Water Purification ◽  
Solid Phase ◽  
Ural Region ◽  
Iron Aluminum ◽  
High Degree ◽  
Water Hydrogen ◽  
Sorption Characteristics

Sorption characteristics of “Ekozol-401” high-dispersed solid-phase agent in water solutions containing ions of iron, aluminum and manganese have been studied. Influence of the sorbent content, extracted metals’ concentration, saline background, hardness and alkalinity, water hydrogen indicator value as well as amount of modifier contained in the solid-phase agent have been stated. High degree of water purification in terms of the said ions has been demonstrated.

scholarly journals Removal of Stabilized Silver Nanoparticles from Surface Water by Conventional Treatment Processes

2019 ◽  
Vol 08 (02) ◽  
pp. 21-35 ◽  
Author(s):  
Hafiz H. M. Salih ◽  
Amro M. El Badawy ◽  
Thabet M. Tolaymat ◽  
Craig L. Patterson
Keyword(s):  
Silver Nanoparticles ◽  
Surface Water ◽  
Conventional Treatment ◽  
Treatment Processes

scholarly journals Nanomaterials Based Drinking Water Purification: Comparative Study with a Conventional Water Purification Process

2018 ◽  
Vol 63 (1) ◽  
pp. 96-112 ◽  
Author(s):  
Barış Şimşek ◽  
İnci Sevgili ◽  
Özge Bildi Ceran ◽  
Haluk Korucu ◽  
Osman Nuri Şara
Keyword(s):  
Silver Nanoparticles ◽  
Drinking Water ◽  
Graphene Oxide ◽  
Water Treatment ◽  
Water Purification ◽  
Drinking Water Treatment ◽  
Treatment Method ◽  
Salmonella Typhi ◽  
Liquid Ratio ◽  
Solid Liquid

One of the ways of fully securing the presence of fresh water is water treatment process. Nanomaterials and nanotechnology offers an innovative solution for water treatment. In this study, physical, chemical and microbiological improvement rates of raw water were analyzed after filtration with graphene oxide. Graphene oxide's water treatment performance; silver nanoparticles, silver nanoparticles & graphene oxide composites that are commonly used in water treatment were compared with a traditional treatment method. When compared to the traditional method, there were improvements of 50 %, 40.7 %, 86.8 % and 45.5 % for color, TIC, TOC and hardness properties, respectively in water treatment by GO-based filtration with solid liquid ratio of 0.7 % (v/v). In water treatment with GO-Ag based filtration, 39.8 %, 69.8 %, 10.3 % and 28.6 % of improvements were obtained for TIC, TOC, hardness and LSI value compared to the conventional method. Both GO at 0.7 % (v/v) solid-liquid ratio and GO-Ag nanocomposites were successful in the number of total viable microorganisms and inhibiting microorganisms such as Escherichia coli fecal (gaita-infected), Salmonella typhi, Enterococcus faecalis, Pseudomona aeruginosa and Staphylococcus aureus. Among the studied parameters GO-Ag nanocomposites found to be the most suitable for drinking water treatment.

Progress in marine derived renewable functional materials and biochar for sustainable water purification

2021 ◽  
Author(s):  
H. M. Manohara ◽  
Sooraj S Nayak ◽  
Gregory Franklin ◽  
Sanna Kotrappanavar Nataraj ◽  
Dibyendu Mondal
Keyword(s):  
Surface Water ◽  
Water Purification ◽  
Water Scarcity ◽  
Functional Materials ◽  
Inorganic Contaminants ◽  
Population Explosion ◽  
Rapid Industrialization ◽  
Day By Day ◽  
Global Water

Global water scarcity is increasing day-by-day due to population explosion, urbanization and rapid industrialization. Inevitably, surface water is widely contaminated by various hazardous geogenic organic and inorganic contaminants, also from...

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