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The water pollution by fluorine ions in Mexico, in addition to being an environmental problem, has become a public health problem, because the intake of polluted water in high concentrations of fluoride ions causes dental and skeletal fluorosis. The main source of pollution is from natural origin, due to the water-rock interaction in the aquifers, the rocks with the highest content of fluorinated compounds are rhyolites and ignimbrites, in Mexico these types of rocks are located on the eastern flank of the Sierra Madre Occidental (Mexican Tin Belt) and corresponds to the area where aquifers polluted with fluorine ions have been found. The adsorption technique using readily available materials to remove fluorine ions from water is a feasible process in Mexico, due to its low cost and does not require any energy expenditure. Clinoptilolite-type natural zeolites are found throughout the national territory and hydroxyapatite is a compound that can be easily prepared by the SOL-GEL method following the principles of green chemistry. In this work a hybrid material (MH2) constituted by (ZN/ZN_Fe/HapT) was prepared under the SOL-GEL method following the principles of green chemistry, it was characterized using the techniques (SEM/EDS, F-TIR, XRD) and it was evaluated in a real water sample collected from a drinking fountain of a CDMX Public School using a downward flow column system to remove fluoride ions from the water, the material presented an excellent adsorption capacity of 73.53 mg F-/g MH2, in addition to removing 99.93% of fluoride ions from the real water sample.

Estudio de eliminación de iones fluoruro en agua sintética en un sistema de columna usando como adsorbente un material híbrido