scholarly journals The effect of conventional water disinfection methods on nitrate level

2020 ◽  
Vol 14 (1) ◽  
pp. 1
Author(s):  
Allahbakhsh Javid ◽  
Ali Akbar Roudbari ◽  
Ali Mashayekh Salehi ◽  
Maryam Ghanbarian ◽  
Marjan Ghanbarian
Keyword(s):  
Water Disinfection ◽  
Nitrate Level ◽  
Disinfection Methods

scholarly journals The effect of conventional water disinfection methods on nitrate level.

2020 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Marjan Ghanbarian ◽  
Maryam Ghanbarian ◽  
Aliakbar Roudbari ◽  
Ali Mashayekh Salehi ◽  
Allahbakhsh Javid
Keyword(s):  
Water Disinfection ◽  
Nitrate Level ◽  
Disinfection Methods

The evaluation of the effect of the nutrient additive "Spirulina" on the histological blood parameters of the organs of Danio rerio fish

2020 ◽  
pp. 34-40
Author(s):  
V.A. Purtskhvanidze ◽  
Yu.I. Sidorenko ◽  
Yu.G. Simakov ◽  
A.K. Purtskhvanidze ◽  
S.V. Smorodinskaya
Keyword(s):  
Trace Elements ◽  
Danio Rerio ◽  
Food Industry ◽  
Aquatic Invertebrates ◽  
Blood Parameters ◽  
Water Disinfection ◽  
Disinfection Methods ◽  
Healthy Nutrition ◽  
The World ◽  
Histological Characteristics

Spirulina is one of the most highly-demanded and popular dietary supplements in the world. It is widely used in healthy nutrition both as a colorant and as a nutrient additive containing a large number of useful trace elements and vitamins. Spirulina is also used to create photosensitizers for photodynamic therapy, which is used to treat cancer and other diseases. Our objective was to conduct experiments and evaluate the eff ect of Spirulina solutions on the histological characteristics of Danio rerio organs. We tested the eff ect of Spirulina on adult fi sh Danio rerio in an acute 96-hour experiment at concentrations of: 0,1; 1,0, 10,0; 30,0; 100,0 mg/l. Afterwards, the histological micro-preparations obtained from the liver, intestines, kidneys, ovaries, and gills of the striped Danio were examined. The studies of the preparations have shown that the maximum allowable concentration of Spirulina solution for fi sh is 3 mg/l. These data can be used in hydrobiology for water disinfection methods, in ichthyopathology for fi sh treatment, and in food industry toxicology. Therefore, when using it for disinfection of water in the reservoir, aquatic invertebrates and fi sh will not be aff ected and sharp changes in the biocenosis of the reservoir are not expected.

Synthesis, Characterization and Bactericide Properties of Al2O3 Nanoparticles and Al2O3-PAN Membranes for Alternative Water Disinfection Methods

MRS Advances ◽  
2017 ◽  
Vol 2 (30) ◽  
pp. 1605-1610 ◽  
Author(s):  
Abdiel Oquendo-Cruz ◽  
Ana Vega-Avila ◽  
Oscar Perales-Pérez
Keyword(s):  
Water Treatment ◽  
Water Disinfection ◽  
Diffusion Method ◽  
Al2o3 Nanoparticles ◽  
E Coli ◽  
Disinfection Methods ◽  
Removal Capacity ◽  
Bacterial Removal ◽  
Electrospun Membranes ◽  
Ft Ir

ABSTRACTAs the global populations grow, water demand and pollution of water resources will increase. As a consequence, water borne disease outbreaks are on the rise and current disinfection methods have been shown to be ineffective in inactivating all pathogens during water treatment. Aluminum oxide nanoparticles (Al2O3 NPs) have been shown to poses antimicrobial properties. Also, Al2O3 has high thermal and chemical stability, which makes these NPs an excellent candidate for water treatment applications. Thus, the objective of this work is to assess the bactericidal properties of Al2O3 NPs synthesized using a polyol-based process in presence of polyvinylpyrrolidone (PVP). For practical applications nanoparticles must be immobilized in a medium to ensure that particles are not dispersed into the treated water. For this reason, synthesized nanoparticles were dispersed in electrospun polyacrylonitrile (PAN) membranes to also evaluate the bacterial removal capacity. X-Ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FT-IR) analysis suggests that synthesized nanoparticles are γ-Al2O3 after annealing at 800°C for 6 hours. Scanning Electron Microscopy (SEM) characterization was used to determine the morphology and size of synthesized nanoparticles. Composite electrospun membranes were also characterized by XRD, FT-IR, and SEM. The bactericide activity of the synthesized γ-Al2O3 NPs and commercially available Al2O3 particles was evaluated by the disc diffusion method against E. coli bacteria. Also, Al2O3-PAN composite electrospun membranes bacterial filtration capacity was tested. Both synthesized and industrially produced particles exhibited antibacterial activity against E. coli, but polyol-based synthesized nanoparticles demonstrated better bactericide properties. The bacterial removal capacity of PAN and PAN/Al2O3 fibers was comparable to that of paper filters.

The Efficiency of Water Treatment and Disinfection by Means of Ultraviolet Radiation

1993 ◽  
Vol 27 (3-4) ◽  
pp. 343-346 ◽  
Author(s):  
J. Sobotka
Keyword(s):  
Water Treatment ◽  
Radiation Dose ◽  
Absorption Coefficient ◽  
Uv Radiation ◽  
Radiation Intensity ◽  
Measuring Equipment ◽  
Water Disinfection ◽  
Advantages And Disadvantages ◽  
Disinfection Methods ◽  
Physical Chemical

Advantages and disadvantages of various water disinfection methods are discussed. The report examines the effectiveness of combined chlorine treatment and UV irradiation method of water disinfection and describes methods of determining UV radiation intensity, α absorption coefficient and radiation dose by means of measuring equipment constructed by the author. The α absorption coefficient dependence on the colour and turbidity of water exposed to radiation is defined. Enchytraeus albidus was applied as bioindicator in UV radiation intensity and disinfection effects measurements. The influence of UV radiation on microbiological, physical, chemical, and toxicological properties of water was determined. Prototype devices for water disinfection with UV radiation were made.

No simple solution to waterborne fungi: various responses to water disinfection methods

2012 ◽  
Vol 12 (2) ◽  
pp. 220-226 ◽  
Author(s):  
Gunhild Hageskal ◽  
Ingun Tryland ◽  
Helge Liltved ◽  
Ida Skaar
Keyword(s):  
Water Disinfection ◽  
Simple Solution ◽  
Disinfection Methods

Case-Control Study of Bladder Cancer and Water Disinfection Methods in Colorado

1993 ◽  
Vol 138 (7) ◽  
pp. 492-501 ◽  
Author(s):  
Michael A. McGeehin ◽  
John S. Reif ◽  
Judith C. Becher ◽  
Ellen J. Mangione
Keyword(s):  
Bladder Cancer ◽  
Case Control Study ◽  
Case Control ◽  
Water Disinfection ◽  
Disinfection Methods ◽  
Control Study
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