scholarly journals Robust immobilization of anionic silver nanoparticles on cellulose filter paper toward a low-cost point-of-use water disinfection system with improved anti-biofouling properties

RSC Advances ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 4873-4882
Author(s):  
Gongyan Liu ◽  
Ruiquan Yu ◽  
Jing Jiang ◽  
Zhuang Ding ◽  
Jing Ma ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Filter Paper ◽  
Low Cost ◽  
Water Disinfection ◽  
Point Of Use ◽  
Cellulose Filter

Point-of-use water disinfection by GA@AgNPs-LA-FP.

Tannic Acid-chitosan Strengthened Cellulose Filter Paper for Water Disinfection via Formation of Silver Nanoparticles

2021 ◽  
Author(s):  
Prena Chaudhary ◽  
Kummara Madhusudana Rao ◽  
Soon Mo Choi ◽  
Sunmi Zo ◽  
Maduru Suneetha ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Tannic Acid ◽  
Filter Paper ◽  
Water Disinfection ◽  
Cellulose Filter

scholarly journals Well-Dispersed Silver Nanoparticles on Cellulose Filter Paper for Bacterial Removal

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 595
Author(s):  
Hsiu-Wen Chien ◽  
Ming-Yen Tsai ◽  
Chia-Jung Kuo ◽  
Ching-Lo Lin
Keyword(s):  
Silver Nanoparticles ◽  
Filter Paper ◽  
X Ray Diffraction ◽  
Bacterial Reduction ◽  
Treatment Technology ◽  
Bacterial Removal ◽  
Contaminated Drinking Water ◽  
Gravity Driven ◽  
Filter Papers ◽  
Cellulose Filter

In this study, a polydopamine (PDA) and polyethyleneimine (PEI)-assisted approach was developed to generate well-distributed PDA/PEI/silver (PDA/PEI/Ag) nanocomplexes on the surfaces of commercial cellulose filter papers to achieve substantial bacterial reduction under gravity-driven filtration. PDA can bind to cellulose paper and act as a reducer to produce silver nanoparticles (AgNPs), while PEI can react with oxidative dopamine and act as a dispersant to avoid the aggregation of AgNPs. The successful immobilization of PDA/PEI/Ag nanocomplexes was confirmed by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) were used as pathogen models to test the efficacy of the PDA/PEI/Ag nanocomplex-incorporated filter papers. The PDA/PEI/Ag nanocomplex-incorporated filter papers provided a substantial bacterial removal of up to 99% by simple gravity filtration. This work may be useful to develop a feasible industrial production process for the integration of biocidal AgNPs into cellulose filter paper and is recommended as a local-condition water-treatment technology to treat microbial-contaminated drinking water.

Tannic acid-mediated rapid layer-by-layer deposited non-leaching silver nanoparticles hybridized cellulose membranes for point-of-use water disinfection

2020 ◽  
Vol 231 ◽  
pp. 115746 ◽  
Author(s):  
Zahid Hanif ◽  
Zeeshan Ahmad Khan ◽  
Mohd Farhan Siddiqui ◽  
Muhammad Zakria Tariq ◽  
Seungkyung Park ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Tannic Acid ◽  
Water Disinfection ◽  
Layer By Layer ◽  
Point Of Use ◽  
Cellulose Membranes

scholarly journals Phenyl carbamate functionalized zinc oxide nanorods for paper-based thin film microextraction

RSC Advances ◽  
2017 ◽  
Vol 7 (79) ◽  
pp. 50210-50215 ◽  
Author(s):  
Mohammad Saraji ◽  
Narges Mehrafza
Keyword(s):  
Thin Film ◽  
Zinc Oxide ◽  
Filter Paper ◽  
Low Cost ◽  
Zinc Oxide Nanorods ◽  
Oxide Nanorods ◽  
Cellulose Filter

In this work, phenyl carbamate functionalized zinc oxide nanorods were fabricated on a cellulose filter paper and employed as a novel and low cost sorbent in a thin film microextraction (TFME) technique.

scholarly journals Assessment of a low-cost, point-of-use, ultraviolet water disinfection technology

2007 ◽  
Vol 6 (1) ◽  
pp. 53-65 ◽  
Author(s):  
Sarah A. Brownell ◽  
Alicia R. Chakrabarti ◽  
Forest M. Kaser ◽  
Lloyd G. Connelly ◽  
Rachel L. Peletz ◽  
...  
Keyword(s):  
Rural Communities ◽  
Residence Time ◽  
Low Cost ◽  
Plug Flow ◽  
Field Studies ◽  
Water Disinfection ◽  
Galvanized Steel ◽  
Hydraulic Residence Time ◽  
Biological Assays ◽  
Point Of Use

We describe a point-of-use (POU) ultraviolet (UV) disinfection technology, the UV Tube, which can be made with locally available resources around the world for under $50 US. Laboratory and field studies were conducted to characterize the UV Tube's performance when treating a flowrate of 5 L/min. Based on biological assays with MS2 coliphage, the UV Tube delivered an average fluence of 900±80 J/m2 (95% CI) in water with an absorption coefficient of 0.01 cm−1. The residence time distribution in the UV Tube was characterized as plug flow with dispersion (Peclet Number = 19.7) and a mean hydraulic residence time of 36 s. Undesirable compounds were leached or produced from UV Tubes constructed with unlined ABS, PVC, or a galvanized steel liner. Lining the PVC pipe with stainless steel, however, prevented production of regulated halogenated organics. A small field study in two rural communities in Baja California Sur demonstrated that the UV Tube reduced E. coli concentrations to less than 1/100 ml in 65 out of 70 samples. Based on these results, we conclude that the UV Tube is a promising technology for treating household drinking water at the point of use.

Facile preparation of chitosan coated silver nanoparticles embedded cotton fabric for point-of-use water disinfection

2020 ◽  
Vol 277 ◽  
pp. 128256
Author(s):  
Shuiping Jiang ◽  
Changyu Tang ◽  
Zhengjun Gong ◽  
Zhipeng Zhang ◽  
Dongmei Wang ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Cotton Fabric ◽  
Water Disinfection ◽  
Point Of Use ◽  
Facile Preparation

Killing Two Birds with One Stone: Coating Ag NPs Embedded Filter Paper with Chitosan for Better and Durable Point-of-Use Water Disinfection

2018 ◽  
Vol 10 (44) ◽  
pp. 38239-38245 ◽  
Author(s):  
Meikun Fan ◽  
Lin Gong ◽  
Ji Sun ◽  
Dongmei Wang ◽  
Feng Bi ◽  
...  
Keyword(s):  
Filter Paper ◽  
Water Disinfection ◽  
Ag Nps ◽  
Point Of Use

scholarly journals Factors involved in sustained use of point-of-use water disinfection methods: a field study from Flores Island, Indonesia

2014 ◽  
Vol 12 (3) ◽  
pp. 573-583 ◽  
Author(s):  
E. Roma ◽  
T. Bond ◽  
P. Jeffrey
Keyword(s):  
Water Treatment ◽  
Low Cost ◽  
Qualitative Evaluation ◽  
Ease Of Use ◽  
Water Disinfection ◽  
Cross Sectional ◽  
Household Water Treatment ◽  
Implementation Phase ◽  
Point Of Use ◽  
Sustained Use

Many scientific studies have suggested that point-of-use water treatment can improve water quality and reduce the risk of infectious diseases. Despite the ease of use and relatively low cost of such methods, experience shows the potential benefits derived from provision of such systems depend on recipients' acceptance of the technology and its sustained use. To date, few contributions have addressed the problem of user experience in the post-implementation phase. This can diagnose challenges, which undermine system longevity and its sustained use. A qualitative evaluation of two household water treatment systems, solar disinfection (SODIS) and chlorine tablets (Aquatabs), in three villages was conducted by using a diagnostic tool focusing on technology performance and experience. Cross-sectional surveys and in-depth interviews were used to investigate perceptions of involved stakeholders (users, implementers and local government). Results prove that economic and functional factors were significant in using SODIS, whilst perceptions of economic, taste and odour components were important in Aquatabs use. Conclusions relate to closing the gap between factors that technology implementers and users perceive as key to the sustained deployment of point-of-use disinfection technologies.

Optimizing the Design and Synthesis of Supported Silver Nanoparticles for Low Cost Water Disinfection

2014 ◽  
Vol 48 (20) ◽  
pp. 12320-12326 ◽  
Author(s):  
Di He ◽  
Maritsa Kacopieros ◽  
Atsushi Ikeda-Ohno ◽  
T. David Waite
Keyword(s):  
Silver Nanoparticles ◽  
Low Cost ◽  
Water Disinfection ◽  
Design And Synthesis
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