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Información tecnológica

On-line version ISSN 0718-0764

Abstract

VALENZUELA, Lorenzo; RAMIREZ-HERNANDEZ, Jorge; SOL, Jesús A  and  REYES, Jaime A. Alternatives for Domestic Fluoride Elimination from Household Water for Human Consumption. Inf. tecnol. [online]. 2011, vol.22, n.2, pp.23-32. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642011000200004.

Oxide of magnesium, activated alumina, granular bone and bone chart were evaluated as methods of elimination of fluoride from water in order to propose the most feasible one for its domestic use. The water from the wells of the study área presents fluoride concentrations from 0.53 to 8.9 mg/l. The results indícate that activated alumina removes 42% of fluoride in 10 min, and the calcined bones removes 43% of fluoride in 5 minutes, from water with 8.7 mg/l of fluoride. Both methods could be considered as viable options. To increase the removal of fluoride with activated alumina is necessary to vary the pH being this more complicated at domestic environment. Also, the treated water could absorb aluminum from the alumina solution, which does not occur with the bone chart. The calcined bone is the best option since it does not cause alterations in the characteristics of the treated water, and this material is easy to obtain.

Keywords : fluoride; water; activated alumina; granular bone; calcined bone.

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