technologies for decentralized fluoride removal: testing metallic iron-based filters

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ID: 190377
2015
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Abstract
Since the realization in the 1930s that elevated fluoride concentrations in drinking water can have detrimental effects on human health, new methods have been progressively developed in order to reduce fluoride to acceptable levels. In the developing world the necessity for filtration media that are both low-cost and sourced from locally available materials has resulted in the widespread use of bone char. Since the early 1990s metallic iron (Fe0) has received widespread use as both an adsorbent and a reducing agent for the removal of a wide range of contaminant species from water. The ion-selectivity of Fe0 is dictated by the positively charged surface of iron (hydr)oxides at circumneutral pH. This suggests that Fe0 could potentially be applied as suitable filter media for the negatively charged fluoride ion. This communication seeks to demonstrate from a theoretical basis and using empirical data from the literature the suitability of Fe0 filters for fluoride removal. The work concludes that Fe0-bearing materials, such as steel wool, hold good promise as low-cost, readily available and highly effective decentralized fluoride treatment materials.
Reference Key
nd-tchoup2015watertechnologies Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Arnaud Igor Ndé-Tchoupé;Richard A. Crane;Hezron T. Mwakabona;Chicgoua Noubactep;Karoli N. Njau
Journal Journal of food biochemistry
Year 2015
DOI
10.3390/w7126657
URL
http://www.mdpi.com/2073-4441/7/12/6657
Keywords
water treatment

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