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Title

Elimination of Fluoride using Natural Zeolites from Ethiopia

AuthorsGómez-Hortigüela Sainz, Luis ; Pérez Pariente, Joaquín ; Chebude, Yonas; Díaz Carretero, Isabel
KeywordsIon-exchange
Natural Zeolites
Defluoridation
Ethiopia
Issue Date12-Sep-2013
CitationFluoride Removal from Drinking Water: Health and Technology Implications. An interdisciplinary research workshop (2013)
AbstractIn the Ethiopian Rift Valley, 41% of the drinking-water sources have a fluoride concentration exceeding 1.5 mg/L (limit imposed by the World Health Organization). Studies indicate that more than 14 million people in Ethiopia may be at risk of dental and skeletal fluorosis. Despite several attempts to reduce the total fluoride concentration in potable waters, the mitigation activities in Ethiopia and in Africa at large are still at the initial stages. The present work offers a complementary approach to the reduction of fluoride in water in the Rift Valley area by using natural local resources, i.e. natural zeolites. Natural zeolites have potential for defluoridation after ion-exchange treatments with different cations, such as Ca2+, Fe3+, Al3+ or La3+, or after surfactant modification [1], with the corresponding increase in cost, however they have rarely shown acceptable defluoridation capacity as raw materials. The main objective of this work is to test the potential use of the naturally occurring zeolites of the country as raw materials in fluoride extraction from water in the Rift Valley area and assess the possibility of constructing sanitation plants based on this zeolite technology.
DescriptionTrabajo presentado en Fluoride Removal from Drinking Water: Health and Technology Implications. An interdisciplinary research workshop, celebrado en Tengeru (Tanzania) del 12 al 13 de septiembre de 2013.
URIhttp://hdl.handle.net/10261/185792
Appears in Collections:(ICP) Comunicaciones congresos
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