Photocatalytic Water Disinfection of CVD Grown WS 2 Monolayer Decorated with Ag Nanoparticles

2018 ◽  
Vol 3 (26) ◽  
pp. 7648-7655 ◽  
Author(s):  
Pawan Kumar ◽  
Shivangi Kataria ◽  
Shounak Roy ◽  
Amit Jaiswal ◽  
Viswanath Balakrishnan
Keyword(s):  
Ag Nanoparticles ◽  
Water Disinfection

scholarly journals Effective water disinfection using magnetic barium phosphate nanoflakes loaded with Ag nanoparticles

2019 ◽  
Vol 218 ◽  
pp. 173-182 ◽  
Author(s):  
Fan Zhang ◽  
Meng Hao Lee ◽  
Yuxiong Huang ◽  
Arturo A. Keller ◽  
Sanghamitra Majumdar ◽  
...  
Keyword(s):  
Ag Nanoparticles ◽  
Water Disinfection ◽  
Effective Water

Hydrothermal preparation of TiO2-Ag nanoparticles and its antimicrobial performance against human pathogenic microbial cells in water

BIOCELL ◽  
2018 ◽  
Vol 42 (3) ◽  
pp. 93-97 ◽  
Author(s):  
Mahmoud MOUSTAFA ◽  
Saad ALAMRI ◽  
Mohamed ELNOUBY ◽  
Tarek TAHA ◽  
M. A. ABU-SAIED ◽  
...  
Keyword(s):  
Ag Nanoparticles ◽  
Hydrothermal Preparation ◽  
Microbial Cells ◽  
Antimicrobial Performance

A Biological Approach of Silver (Ag) Nanoparticles Synthesis Using Leaf Extract of Adhatoda Vasica

2012 ◽  
Vol 3 (2) ◽  
pp. 177-179
Author(s):  
Dr. K.Vinoth Kumar Dr. K.Vinoth Kumar ◽  
◽  
Dr. C. Udayasoorian Dr. C. Udayasoorian
Keyword(s):  
Ag Nanoparticles ◽  
Leaf Extract ◽  
Adhatoda Vasica ◽  
Biological Approach ◽  
Nanoparticles Synthesis

DISINFEKSI UNTUK PROSES PENGOLAHAN AIR MINUM

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Nusa Idaman Said
Keyword(s):  
Drinking Water ◽  
Water Purification ◽  
Distribution System ◽  
Residual Effect ◽  
Drinking Water Treatment ◽  
Disinfection Byproducts ◽  
Water Disinfection ◽  
Pathogenic Microorganisms ◽  
Microbiological Contamination ◽  
Disinfection Process

Water disinfection means the removal, deactivation or killing of pathogenic microorganisms. Microorganisms are destroyed or deactivated, resulting in termination of growth and reproduction. When microorganisms are not removed from drinking water, drinking water usage will cause people to fall ill. Chemical inactivation of microbiological contamination in natural or untreated water is usually one of the final steps to reduce pathogenic microorganisms in drinking water. Combinations of water purification steps (oxidation, coagulation, settling, disinfection, and filtration) cause (drinking) water to be safe after production. As an extra measure many countries apply a second disinfection step at the end of the water purification process, in order to protect the water from microbiological contamination in the water distribution system. Usually one uses a different kind of disinfectant from the one earlier in the process, during this disinfection process. The secondary disinfection makes sure that bacteria will not multiply in the water during distribution. This paper describes several technique of disinfection process for drinking water treatment. Disinfection can be attained by means of physical or chemical disinfectants. The agents also remove organic contaminants from water, which serve as nutrients or shelters for microorganisms. Disinfectants should not only kill microorganisms. Disinfectants must also have a residual effect, which means that they remain active in the water after disinfection. For chemical disinfection of water the following disinfectants can be used such as Chlorine (Cl2),  Hypo chlorite (OCl-), Chloramines, Chlorine dioxide (ClO2), Ozone (O3), Hydrogen peroxide etch. For physical disinfection of water the following disinfectants can be used is Ultraviolet light (UV). Every technique has its specific advantages and and disadvantages its own application area sucs as environmentally friendly, disinfection byproducts, effectivity, investment, operational costs etc. Kata Kunci : Disinfeksi, bakteria, virus, air minum, khlor, hip khlorit, khloramine, khlor dioksida, ozon, UV.

NEW TiO2-Ag NANOPARTICLES USED FOR ORGANIC COMPOUNDS DEGRADATION

2019 ◽  
Vol 18 (8) ◽  
pp. 1755-1763 ◽  
Author(s):  
Maria Harja ◽  
Igor Cretescu ◽  
Consuelo Gomez de Castro ◽  
Catalina Nutescu Duduman ◽  
Doina Lutic ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Ag Nanoparticles

Preparation and Characterization of Ag Nanoparticles on Porous Silicon for Photo Conversion

2019 ◽  
Vol 50 (3) ◽  
pp. 82-95
Author(s):  
RAFID SABBAR ZAMEL ◽  
BAN KHALID MOHAMMED ◽  
ALAULDEEN SALAH YASEEN ◽  
HAITHAM T. HUSSEIN ◽  
UDAY MUHSIN NAYEF
Keyword(s):  
Porous Silicon ◽  
Ag Nanoparticles

Impact of Particulate Matter on Distribution System Disinfection Efficacy

2008 ◽  
Vol 43 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Linda Wojcicka ◽  
Carole Baxter ◽  
Ron Hofmann
Keyword(s):  
Helicobacter Pylori ◽  
Particulate Matter ◽  
Distribution System ◽  
Contact Time ◽  
Water Disinfection ◽  
Sphingomonas Paucimobilis ◽  
Soil Corrosion ◽  
Log Reduction ◽  
Drinking Water Disinfection ◽  
The Impact

Abstract Microorganisms have been shown to survive drinking water disinfection and remain viable in disinfected waters despite the presence of disinfectant residuals. This may be partially attributed to protection by particulate matter. The aim of this study was to determine the effects of the presence of particulate matter on disinfection kinetics. Sphingomonas paucimobilis ATCC 10829 and Helicobacter pylori ATCC 43504 were used in inactivation experiments in the presence and absence of soil, corrosion, and wastewater particles. The results showed that the presence of such particles tended to inhibit chlorine and monochloramine inactivation, although the magnitude of the impact under the conditions tested was small (e.g., 1-log reduction in inactivation for several minutes of contact time in the presence of less than 1 mg/L of disinfectant).

Synthesis and Biological Evaluation of Amoxicillin Loaded Hybrid Material Composite Spheres Against Methicillin-Resistant Staphylococcus aureus

2020 ◽  
Vol 21 ◽  
Author(s):  
Muhammad Arfat Yameen ◽  
Amir Zeb ◽  
Raza E Mustafa ◽  
Sana Mushtaq ◽  
Nargis Aman ◽  
...  
Keyword(s):  
Mtt Assay ◽  
Hybrid Material ◽  
Ag Nanoparticles ◽  
Hybrid Composite ◽  
Synthesis Method ◽  
Biological Evaluation ◽  
Vitro Assay ◽  
Cytotoxicity Studies ◽  
Material Composite

Background: Incoherent use of antibiotics has led toward resistance in MRSA, which is becoming multidrugresistant with high rate of virulence in the community and hospital settings. Objective: Synergistic anti-MRSA activity was investigated in this study for hybrid material composite spheres of amoxicillin, Ag nanoparticles and chitosan which were prepared by one-step synthesis method and various characterizations were performed. Methods: Antimicrobial-susceptibility assay on MRSA was achieved by disc diffusion and agar dilution techniques while agar well diffusion was used for hybrid composite spheres. The in vitro and cytotoxicity studies was done by skin abrasion mouse model and MTT assay on RD cell respectively. Results: All isolates were resistant with the tested antibiotics except vancomycin. MIC against MRSA showed high resistance with amoxicillin from 4 to 128 mg L-1. The mean diameter of chitosan spheres and Ag nanoparticles was 02 mm and 277 nm respectively. Morphology of spheres was uneven, varied, porous and irregular in SEM and Ag nanoparticles presence and formation was also seen in micrograph. No substantial interface among drug, nanoparticles and polymer was found in XRD and IR showed characteristic peaks of all compound in the formulation. The in vitro assay showed augmented anti-MRSA activity with amoxicillin loaded hybrid composite spheres (22-29 mm). A significant reduction in microbial burden (~6.5 log10 CFU ml-1) was seen in vivo with loaded hybrid composite spheres formulation. The MTT assay indicated no potential cytotoxicity with hybrid composite spheres. Conclusion: Synergistic effect, amoxicillin, new hybrid formulation, anti-MRSA activity, composite spheres. nanoparticles.

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