منابع مشابه
Removal of heavy metals from waste water using different biosorbents
The discharge of waste water containing heavy metals like Cr, Cd, Cu from tanneries, electroplating units, metal processing industry etc is the major cause for metal pollution which in turn causes adverse effects in the environment. The conventional methods available for removal of heavy metal are costly and also produce some toxic sludge. This has lead to the invention of new technology like b...
متن کاملReview on Defluoridation Techniques of Water
-------------------------------------------------------Abstract--------------------------------------------------------Fluoride is often described as a ‘double-edged sword’ as inadequate ingestion is associated with dental caries, where as excessive intake leads to dental, skeletal and soft tissue fluorosiswhich has no cure. Considering the fact that fluorosis is an irreversible condition and h...
متن کاملDefluoridation of Drinking Water : Efficacy and Need
Fluorine is the 13 most abundant naturally occurring element in the Earth’s crust and is the lightest member of the halogens. It is the most electronegative and reactive of all the elements and as a result, elemental fluorine does not occur in nature but found as a fluoride mineral complexes. Exposure to fluoride beyond the recommended level for longer duration causes fluorosis. Several physica...
متن کاملDefluoridation Of Drinking Water Merits of Alternative Technologies
The crippling malady of fluorosis not only affects the bones and teeth, but every tissue and organ of the body, leading to death after prolonged illness. It is a problem of public health importance. Although the disease had been known to exist in India as early as the 1930s it was not identified as a national health problem till India became independent. Perhaps the magnitude of the problem and...
متن کاملDefluoridation Of Water by Moringa Oleifera- A Natural Adsorbent
The water available for daily consumption may be contaminated by natural sources or by industrial effluents. One such a contaminant is fluoride. Exposure to fluoride in drinking water has a number of adverse effects on human health. One of the naturally available alternatives for defluoridation of water is Moringa Oleifera. Using colourimetric method, tests were conducted to get optimal values ...
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ژورنال
عنوان ژورنال: Natural Science
سال: 2012
ISSN: 2150-4091,2150-4105
DOI: 10.4236/ns.2012.44035