Activated carbon impregnation with ag and cu composed nanoparticles for escherichia coli contaminated water treatment

2019 ◽  
Vol 97 (9) ◽  
pp. 2408-2418 ◽  
Author(s):  
Flávia Sayuri Arakawa ◽  
Quelen Letícia Shimabuku‐Biadola ◽  
Simone de Lima Bazana ◽  
Marcela Fernandes Silva ◽  
Benício Alves de Abreu Filho ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Activated Carbon ◽  
Water Treatment ◽  
Contaminated Water

scholarly journals Physical characteristics of materials of Ecuadorian origin for water treatment

2021 ◽  
Vol 958 (1) ◽  
pp. 012020
Author(s):  
M Mayacela ◽  
L Maldonado ◽  
F Morales ◽  
B Suquillo
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Chemical Treatment ◽  
Laboratory Tests ◽  
Physical Characteristics ◽  
International Standards ◽  
Contaminated Water ◽  
Physical Chemical ◽  
Physico Chemical ◽  
Wastewater Pollutants

Abstract In Ecuador, contaminated water is discharged directly into the sewage system. The treatments carried out for the elimination of wastewater pollutants are classified into three types: Physical, Chemical and Biological. One of the treatments that is frequently used is the physico-chemical treatment in which various reactive substances are used, which is why in this research several reactive substances of Ecuadorian origin, including activated carbon, peat, limestone, volcanic pyroclasts, zeolite clinoptilolite and zeolite modernite, are physically characterized. For this purpose, some laboratory tests were carried out based on national and international standards in order to obtain the granulometry, compactness coefficient, porosity, sphericity and permea-bility.

Combination of UV Oxidation with Other Treatment Technologies for the Remediation of Contaminated Water

1997 ◽  
Vol 2 (3) ◽  
Author(s):  
K. G. Bircher ◽  
W. Lem ◽  
K. M. Simms ◽  
B. W. Dussert
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Cost Effective ◽  
Integrated Systems ◽  
Contaminated Water ◽  
Air Stripping ◽  
Treatment Train ◽  
Treatment Technologies ◽  
Using Data ◽  
Uv Oxidation

AbstractThe use of stand-alone water treatment technologies such as UV/Oxidation, granular activated carbon (GAC), air stripping and sedimentation, has proven to be cost-effective in many cases. However, there are a substantial number of instances where a combination of treatment technologies integrated into a treatment train provides a more economical approach than would be obtained by using only one technology. This paper presents case studies of integrated systems where UV/Oxidation is combined with either GAC, air stripping, or precipitation. The benefits, including improved treatment costs, are described using data from actual installations.

scholarly journals Optimization of banana trunk-activated carbon production for methylene blue-contaminated water treatment

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Mohammed Danish ◽  
Tanweer Ahmad ◽  
W. N. A. W. Nadhari ◽  
Mehraj Ahmad ◽  
Waheed Ahmad Khanday ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Water Treatment ◽  
Contaminated Water ◽  
Carbon Production

Cost-effective water treatment of polluted surface water by using direct filtration and granular activated carbon filtration

2002 ◽  
Vol 2 (1) ◽  
pp. 233-240 ◽  
Author(s):  
J. Cromphout ◽  
W. Rougge
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Treatment Process ◽  
Treatment Plant ◽  
Granular Activated Carbon ◽  
Cost Effective ◽  
Water Treatment Plant ◽  
Direct Filtration ◽  
Carbon Filtration ◽  
Effective Water

In Harelbeke a Water Treatment Plant with a capacity of 15,000 m3/day, using Schelde river water has been in operation since April 1995. The treatment process comprises nitrification, dephosphatation by direct filtration, storage into a reservoir, direct filtration, granular activated carbon filtration and disinfection. The design of the three-layer direct filters was based on pilot experiments. The performance of the plant during the five years of operation is discussed. It was found that the removal of atrazin by activated carbon depends on the water temperature.

Microbiological quality of residues from drinking water preparation

1995 ◽  
Vol 31 (5-6) ◽  
pp. 75-79 ◽  
Author(s):  
M. Würzer ◽  
A. Wiedenmann ◽  
K. Botzenhart
Keyword(s):  
Waste Water ◽  
Escherichia Coli ◽  
Pseudomonas Aeruginosa ◽  
Drinking Water ◽  
Water Treatment ◽  
Pathogenic Bacteria ◽  
Waste Water Treatment ◽  
Microbiological Quality ◽  
Detection Limits

In Germany the application of procedures such as flocculation and filtration in the preparation of drinking water results in the annual production of an estimated 500,000 t of sediments and sludges. Some of these residues have a potential for being reused, for example in agriculture, forestry, brickworks or waste water treatment. To assess the microbiological quality of residues from waterworks methods for the detection of enterobacteria, Escherichia coli, Salmonella, Pseudomonas aeruginosa, Legionella, poliovirus, Ascaris suis eggs and Cryptosporidium have been evaluated regarding their detection limits and were applied to various residues from German waterworks. Results show that sediments and sludges may contain pathogenic bacteria, viruses and protista. When residues from waterworks are intended to be reused in agriculture or forestry the microbiological quality should therefore be considered.

Practical Guide to Determine the Impact of Radon and Other Radionuclides on Water Treatment Processes

1992 ◽  
Vol 26 (5-6) ◽  
pp. 1255-1264
Author(s):  
K. L. Martins
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Environmental Protection Agency ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Packed Tower ◽  
Treatment Processes ◽  
Radioactivity Exposure ◽  
The Impact ◽  
Percent Removal

During treatment of groundwater, radon is often coincidentally removed by processes typically used to remove volatile organic compounds (VOCs)-for example, processes such as liquid-phase granular activated carbon (LGAC) adsorption and air stripping with vapor-phase carbon (VGAC). The removal of radon from drinking water is a positive benefit for the water user; however, the accumulation of radon on activated carbon may cause radiologic hazards for the water treatment plant operators and the spent carbon may be considered a low-level radioactive waste. To date, most literature on radon removal by water treatment processes was based on bench- or residential-scale systems. This paper addresses the impact of radon on municipal and industrial-scale applications. Available data have been used todevelop graphical methods of estimating the radioactivity exposure rates to facility operators and determine the fate of spent carbon. This paper will allow the reader to determine the potential for impact of radon on the system design and operation as follows.Estimate the percent removal of radon from water by LGAC adsorbers and packed tower air strippers. Also, a method to estimate the percent removal of radon by VGAC used for air stripper off-gas will be provided.Estimate if your local radon levels are such that the safety guidelines, suggested by USEPA (United States Environmental Protection Agency), of 25 mR/yr (0.1 mR/day) for radioactivity exposure may or may not be exceeded.Estimate the disposal requirements of the waste carbon for LGAC systems and VGAC for air stripper “Off-Gas” systems. Options for dealing with high radon levels are presented.

High Performance Hybrid Capacitive Deionization with Ag-coated Activated Carbon Electrode

2021 ◽  
Author(s):  
Hongsik Yoon ◽  
Jiho Lee ◽  
Taijin Min ◽  
Gunhee Lee ◽  
Minsub Oh
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Industrial Application ◽  
High Performance ◽  
Treatment System ◽  
Carbon Electrode ◽  
Capacitive Deionization ◽  
Water Treatment System

Capacitive deionization (CDI) has been highlighted as a promising electrochemical water treatment system. However, the low deionization capacity of CDI electrodes has been a major limitation for its industrial application,...

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