scholarly journals Sorbent-embedded sheets for safe drinking water in developing countries: a case study of lead(II) removal by a zeolite-embedded sheet

2017 ◽  
Vol 16 (1) ◽  
pp. 159-163 ◽  
Author(s):  
Lester Botoman ◽  
Elvis Shukla ◽  
Erni Johan ◽  
Satoshi Mitsunobu ◽  
Naoto Matsue
Keyword(s):  
Developing Countries ◽  
Drinking Water ◽  
Water Purification ◽  
Type A ◽  
Rural Populations ◽  
Safe Drinking Water ◽  
Lta Zeolite ◽  
Removal Of Contaminants ◽  
Safety Of Drinking Water

Abstract Although many kinds of materials for water purification are known, easy-to-use methods that ensure the safety of drinking water for rural populations are not sufficiently available. Sorbent-embedded sheets provide methods for the easy removal of contaminants from drinking water in the home. As an example of such a sorbent-embedded sheet, we prepared a Linde type A (LTA) zeolite-embedded sheet (ZES) and examined its Pb(II) removal behaviour. Different amounts of LTA were added either as powder or as ZES to 0.3 mM Pb(NO3)2 solutions containing 2.5 mM Ca(NO3)2, in which the ratio of the negative charges in LTA to the positive charges in Pb(II) (LTA/Pb ratio) ranged from 1 to 20. After shaking, the mixtures were centrifuged to remove the powder, while the ZES was simply removed from the mixture by hand. The LTA powder removed more than 99% of the Pb(II) from the solution at all LTA/Pb ratios within 1 h, while the ZES removed >99% of the Pb(II) at LTA/Pb ratios of 2 and higher; at the highest LTA/Pb ratio of 20, the ZES removed >99% of the Pb(II) in 30 s. Therefore, the use of appropriate sorbent-embedded sheets enable the facile removal of contaminants from water.

Management strategy for safe drinking water in developing countries – A case study for Assela, Ethiopia

2020 ◽  
Vol 177 ◽  
pp. 322-329
Author(s):  
Hüseyin Gökçekuş ◽  
Derin Orhon ◽  
Gebre Gelete Kebede ◽  
Brook Abate ◽  
Kannan Narayanan ◽  
...  
Keyword(s):  
Developing Countries ◽  
Drinking Water ◽  
Management Strategy ◽  
Safe Drinking Water

Access to Safe Drinking Water

2020 ◽  
pp. 1544-1558
Author(s):  
Robert Cecil Willems ◽  
Steve A. MacDonald
Keyword(s):  
Drinking Water ◽  
Literature Review ◽  
Empirical Evidence ◽  
Water Purification ◽  
Water System ◽  
Vested Interest ◽  
Safe Drinking Water ◽  
Majority World ◽  
The People

The focus of this chapter is to demonstrate that providing safe drinking water to communities in Majority World countries, specifically Kenya, Africa, is easily accomplished. Any water system, in order to be successfully constructed in impoverished Majority World communities, must be simple and inexpensive and the benefiting community must have a vested interest and ownership for the system to be effective. Establishing a vested interest by water recipients requires that the people providing the water purification technology understand the culture and worldview of the water system recipients. This approach is supported by literature review but more so by empirical evidence gathered by both authors.

Reduction of MS2 bacteriophage and rotavirus in biosand filters

2016 ◽  
Vol 2 (3) ◽  
pp. 483-491 ◽  
Author(s):  
Hanting Wang ◽  
Mingming Li ◽  
Kazami Brockman ◽  
Thanh H. Nguyen
Keyword(s):  
Developing Countries ◽  
Drinking Water ◽  
Safe Drinking Water ◽  
Ms2 Bacteriophage ◽  
Biosand Filter ◽  
Biosand Filters

Biosand filter can potentially remove up 99.99% of rotavirus to provide safe drinking water to communities in developing countries.

Bacteria removal effectiveness of ceramic pot filters not applied with colloidal silver

2011 ◽  
Vol 11 (6) ◽  
pp. 765-772 ◽  
Author(s):  
K. N. Clark ◽  
A. C. Elmore
Keyword(s):  
Escherichia Coli ◽  
Developing Countries ◽  
Drinking Water ◽  
Coliform Bacteria ◽  
Colloidal Silver ◽  
Safe Drinking Water ◽  
Household Level ◽  
Log Reduction ◽  
Many Sources ◽  
Bacteria Removal

In many developing countries such as Guatemala, access to safe drinking water is very limited. Many sources of water that are available are contaminated with bacteria, particularly Escherichia coli and other coliform bacteria. In order to provide a means of obtaining safe drinking water in developing countries, various methods of treating water at the household level have been developed and implemented throughout the world. One of the more promising treatment mechanisms is the ceramic pot filter, which is typically applied with colloidal silver because of it supposed disinfection purposes. During this study, the bacteria removal effectiveness of 30 filters without colloidal silver was determined by adding water contaminated with Escherichia coli to the filters, and then measuring bacteria concentrations in the filter effluent. The average log reduction values of E. coli and total coliforms determined in this study are 2.1 and 2.3, respectively, and are comparable to other studies of bacteria removal of CPFs. This situation suggests that colloidal silver may indeed not be necessary for the filters to effectively remove bacteria from source water. This study was completed in a period of two weeks, however, while the effect of silver may provide disinfection for several months of use.

Sign in / Sign up

Export Citation Format

Share Document