Avoiding the Use of Exhausted Drinking Water Filters: A Filter-Clock Based on Rusting Iron

Efficient but affordable water treatment technologies are currently sought to solve the prevalent shortage of safe drinking water. Adsorption-based technologies are in the front-line of these efforts. Upon proper design, universally applied materials (e.g., activated carbons, bone chars, metal oxide...

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Bibliographic Details
Published in:Water (Basel) 2018-05, Vol.10 (5), p.591
Main Authors: Ndé-Tchoupé, Arnaud, Lufingo, Mesia, Hu, Rui, Gwenzi, Willis, Ntwampe, Seteno, Noubactep, Chicgoua, Njau, Karoli
Format: Article
Language:English
Subjects:
Activated carbon
Clocks
Drinking water
Filters
Iron
Life prediction
Oxides
Pollutant removal
Pollutants
Public health
Rusting
Service life
Water filters
Water purification
Water treatment
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Summary:Efficient but affordable water treatment technologies are currently sought to solve the prevalent shortage of safe drinking water. Adsorption-based technologies are in the front-line of these efforts. Upon proper design, universally applied materials (e.g., activated carbons, bone chars, metal oxides) are able to quantitatively remove inorganic and organic pollutants as well as pathogens from water. Each water filter has a defined removal capacity and must be replaced when this capacity is exhausted. Operational experience has shown that it may be difficult to convince some low-skilled users to buy new filters after a predicted service life. This communication describes the quest to develop a filter-clock to encourage all users to change their filters after the designed service life. A brief discussion on such a filter-clock based on rusting of metallic iron (Fe[sup.0]) is presented. Integrating such filter-clocks in the design of water filters is regarded as essential for safeguarding public health.
ISSN:2073-4441
2073-4441
DOI:10.3390/w10050591