Application of Silver Nanoparticles for Water Treatment

2018 ◽  
Vol 2 (4) ◽  
pp. 1-11 ◽  
Author(s):  
Santosh Kumar Jena ◽  
2021 ◽  
Vol 27 ◽  
pp. 102284
Author(s):  
Jakub Pečenka ◽  
Zuzana Bytešníková ◽  
Tomáš Kiss ◽  
Eliška Peňázová ◽  
Miroslav Baránek ◽  
...  

2013 ◽  
Vol 88 ◽  
pp. 90-94 ◽  
Author(s):  
Dang Van Phu ◽  
Le Anh Quoc ◽  
Nguyen Ngoc Duy ◽  
Nguyen Quoc Hien

2018 ◽  
Vol 63 (1) ◽  
pp. 96-112 ◽  
Author(s):  
Barış Şimşek ◽  
İnci Sevgili ◽  
Özge Bildi Ceran ◽  
Haluk Korucu ◽  
Osman Nuri Şara

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.


RSC Advances ◽  
2016 ◽  
Vol 6 (61) ◽  
pp. 56674-56683 ◽  
Author(s):  
Shubhangi Borse ◽  
Mayur Temgire ◽  
Ayesha Khan ◽  
Satyawati Joshi

Achievement of simultaneous reduction of bactericidal silver nanoparticles and in situ polymerization by photo irradiation is beneficial for water treatment.


2019 ◽  
Vol 48 (5) ◽  
pp. 431-438 ◽  
Author(s):  
Margarita Ivanovna Skiba ◽  
Viktoria Vorobyova

Purpose This paper aims to propose a simple, eco-friendly method for obtaining colloidal solutions of silver nanoparticles (Ag NPs) by using of contact non-equilibrium low-temperature plasma in presents polysorbate-80 and to assess their antibacterial activity in composite materials (beads) for water treatment process. Design/methodology/approach Silver nanoparticles were prepared in aqueous AgNO3 solution by using of contact non-equilibrium low-temperature plasma in the present of nonionic surfactant polysorbate-80 (Tween 80) as capping agent. Ultraviolet–visible (UV) spectroscopy, X-ray diffraction and zeta potential analysis were used to study the formation and properties of silver nanoparticles. Findings The formation of silver colloidal solutions in the presence of capping agent under plasma discharge is characterized by the presence of peak λmax = 380 – 402 nm in the spectra. The addition of sodium alginate into the reaction mixture allows synthesizing stable colloidal silver solutions. The average size of formed silver particles is up to 50 nm. Ag NPs exhibited an excellent bactericidal activity against both gram-positive and gram- negative bacteria. Composite beads prepared using nonionic surfactant were found to be effective in disinfecting the Staphylococcus aureus to different extents. Research limitations/implications Further studies are necessary for confirmation of the practical application, especially of the toxicity of Ag NPs, as well as the sorption properties of the alginate beads with Ag NPs. Practical implications The method provides a simple and practical solution to improving the synthesis of colloidal solutions of Ag NPs for water treatment process. Originality/value Contact nonequilibrium low-temperature plasma can be used as an effective technique for synthesis of nanomaterials.


2021 ◽  
Vol 7 (11) ◽  
pp. 103952-103972
Author(s):  
Dawerson Ramos da Paixão ◽  
Marcelo Ramon da Silva Nunes ◽  
Anselmo Fortunato Ruiz Rodriguez ◽  
Johnnatan Duarte de Freitas ◽  
Hugo Morais Meira ◽  
...  

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