NDLI: Evaluation of bactericidal efficacy of silver ions on Escherichia coli for drinking water disinfection

Content Provider	Springer Nature Link
Author	Pathak, Satya P. Gopal, K.
Copyright Year	2012
Abstract	The purpose of this study is the development of a suitable process for the disinfection of drinking water by evaluating bactericidal efficacy of silver ions from silver electrodes.A prototype of a silver ioniser with silver electrodes and control unit has been fabricated. Silver ions from silver electrodes in water samples were estimated with an atomic absorption spectrophotometer. A fresh culture of Escherichia coli (1.75 × 10$^{3}$ c.f.u./ml) was exposed to 1, 2, 5, 10 and 20 ppb of silver ions in 100 ml of autoclaved tap water for 60 min. The effect of different pH and temperatures on bactericidal efficacy was observed at constant silver ion concentration (5 ppb) and contact time of 30 min.The maximum bactericidal activity (100%) was observed at 20 ppb of silver ion concentration indicating total disinfection after 20 min while minimum bactericidal activity (25%) was observed after 10 min at 01 ppb of silver ions. Likewise, 100% bactericidal activity was noticed with 2, 5 and 10 ppb of silver ions after 60, 50 and 40 min, respectively. Bactericidal activity at pH 5, 6, 7, 8 and 9 was observed at 79.9%, 79.8%, 80.5%, 100% and 100%, respectively, whereas it was 80.4%, 88.3%, 100%, 100% and 100% at 10°C, 20°C, 30°C, 40°C and 50°C, respectively.The findings of this study revealed that very low concentrations of silver ions at pH 8–9 and temperature >20°C have bactericidal efficacy for total disinfection of drinking water. Silver ionisation is suitable for water disinfection and an appropriate alternative to chlorination which forms carcinogenic disinfection by-products.
Starting Page	2285
Ending Page	2290
Page Count	6
File Format	PDF
ISSN	09441344
Journal	Environmental Science and Pollution Research
Volume Number	19
Issue Number	6
e-ISSN	16147499
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-01-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bactericidal efficacy Silver ion Water disinfection Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Environment Industrial Pollution Prevention Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Ultraviolet light-emitting diodes in water disinfection

Nano-silver in drinking water and drinking water sources: stability and influences on disinfection by-product formation

Endocrine disrupters in the aquatic environment

Silver-modified clinoptilolite for the removal of Escherichia coli and heavy metals from aqueous solutions

The occurrence of disinfection by-products in the drinking water of Athens, Greece

Encyclopedia of atmospheric sciences

Occurrence of diarrheagenic Escherichia coli genes in raw water of water treatment plants

Perfluorinated Surfactants in Surface and Drinking Waters (9 pp)

Evaluation of bactericidal efficacy of silver ions on Escherichia coli for drinking water disinfection.

Evaluation of bactericidal efficacy of silver ions on Escherichia coli for drinking water disinfection

Similar Documents

Ultraviolet light-emitting diodes in water disinfection

Nano-silver in drinking water and drinking water sources: stability and influences on disinfection by-product formation

Endocrine disrupters in the aquatic environment

Silver-modified clinoptilolite for the removal of Escherichia coli and heavy metals from aqueous solutions

The occurrence of disinfection by-products in the drinking water of Athens, Greece

Encyclopedia of atmospheric sciences

Occurrence of diarrheagenic Escherichia coli genes in raw water of water treatment plants

Perfluorinated Surfactants in Surface and Drinking Waters (9 pp)

Evaluation of bactericidal efficacy of silver ions on Escherichia coli for drinking water disinfection.

Evaluation of bactericidal efficacy of silver ions on Escherichia coli for drinking water disinfection