latest news: Water Treatment
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Defluoridation in drinking waters
Abstract Although water supplies containing excessive amount of fluoride are generally very rare worldwide, there are locations in Turkey where drinking water contains very high fluoride concentrations. Especially in the middle and eastern part of Turkey, some mineral and drinking waters contain very high fluoride concentrations. It is a well known fact that drinking water […]
Turkey Water Treatment -
Defluoridation of drinking water with pottery: effect of firing temperature.
Abstract Excessive fluoride (F) in drinking water should be removed, but simple, inexpensive methods of fluoride removal are not readily available. This study examines the F(-)-binding capacity of clay and clayware, especially the effect of the firing temperature on the F(-)-binding process. A series of pots were made from ordinary potter’s clay and fired at […]
International Water Treatment -
Aluminium phosphate for the defluorination of potable water
Abstract In this paper, a new method for the defluoration of potable water is described. In the proposed method, aluminium phosphate is used as a matrix of the stationary phase which can adsorb fluorides or exchange with fluorides selectively and reduce the concentration of fluorides in natural water to an allowable level. We have repeated […]
International Water Treatment -
Hydrogeochemical studies for Al, F and Fe in waters supplying haemodialysis units in the Trent region, U.K.
Abstract Geographical and seasonal variations in the concentrations of Al, F and Fe in tap water supplying home haemodialysis units within the administrative area of the Trent Regional Health Authority, have been examined. Aluminium and fluoride were considered for their implications in bone disorders and iron for its competitive binding with aluminium to transferrin in […]
United Kingdom, England Water Treatment -
Aluminium and fluoride in the water supply and their removal for haemodialysis.
Abstract Aluminium and fluoride in the water supply and their removal for haemodialysis have been investigated in the Trent Region, U.K., and wide variations noted. The efficiency of removal of these elements from the mains water supplying home haemodialysis units by different water treatment systems currently installed has been assessed and a follow-up study performed […]
International Water Treatment -
Arsenic and fluoride removal from groundwater by reverse osmosis.
Abstract The reverse osmosis process was evaluated for removal of naturally occurring arsenic and fluoride from groundwater. Arsenic removal was affected by the prevalent arsenic species present in the water. Arsenic concentrations were reduced by approximately 60%–90% from nearly 80 ?g/L. Fluoride concentrations were reduced by approximately 60% from nearly 1.7 mg/L. *Original abstract online […]
International Water Treatment -
Fluoride Reduction in Community Water Supplies
Fluoride Reduction in Community Water Supplies A 92-page report prepared for the state of South Carolina, Department of Health & Environmental Control, Water Supply Division. Volume One – 1980. Excerpts: Abstract Forty-three community water supplies located along the east coast of South Carolina contain fluoride concentrations which exceed the limit established by law. During the […]
United States, South Carolina Water Treatment -
Methods of Removing Fluorides from Water.
*Original online at http://fluoridealert.org/wp-content/uploads/maier-1947.pdf Excerpts: FLUORIDE REMOVAL METHODS The methods utilizing the fluoride exchange properties of the apatites, such as those involving the use of the constituents of bone, the ion exchange principle, and those depending on the sorptive properties of aluminum compounds, appear to show the most promise for removing excess fluorides from water. […]
United States, National USA Water Treatment -
The removal of fluorides from water by sand Filtration
Letter Since it has been established that the dental disease in man known as “mottled enamel” is due to the drinking of water containing fluorine, the removal of fluorides by filtration has become an important problem. I have found that a contact filter 15 cm high, made of river sand passing a screen 60 to […]
United States, National USA Water Treatment
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