Water arsenic removal for human consumption using Mg/Fe layered double hydroxide


Water contamination by arsenic is a serious public health problem worldwide. The use of mesoporous hydrotalcite compounds is an efficient and practical option for the adsorption of arsenic, due to its high removal rate and low cost. A Mg/Fe layered double hydroxide was synthesized by the coprecipitation method to eliminate arsenic in contaminated water. This solid was treated at 100 °C and 350 °C. The solid was characterized by XRD and DSC-TGA. Arsenic removal tests were carried out by contact at the equilibrium in the Bach system with synthetic arsenic solutions and natural spring samples. The thermally treated solid at 350 °C showed the best arsenic removal capacity, with an adsorption capacity of 447.7 mg of arsenic per g of adsorbent in a time of 180 min. This capacity is attributed to the structural modification by the heat treatment.

PDF (Español (España))


Alvarado Silva, L. F. ( 2001). Cuantificación de Arsénico y Flúor en agua de consumo en localidades de seis Estados de la República Mexicana con hidrofluorosis endémica. Tesis de Licenciatura en Q.F.B. San Luis Potosi, San Luis Potosi, México: UASLP.

Coronado-González J.A., D. R.-V. (2007). Inorganic arsenic exposure and type 2 diabetes mellitus in Mexico. Environ Res, 104:383-389.

Del Razo L.M., G.-V. G.-P. (2011). Exposure to arsenic in drinking water is associated with increased prevalence of diabetes: a cross-sectional study in the Zimapán and Lagunera regions in Mexico. Environ Health., 10:73.

Hamadeh H.K., T. K. (2002). Coordination of altered DNA repair and damage pathways in arsenite exposed keratinocytes. Toxicol Sci, 2:306-316.

Kim Y., L. B. (2009). The association between arsenic and children's intelligence: a meta-analysis. Biol Trace Elem Res., 129:88-93.

Kim Y., L. B. (2011). Association between urinary arsenic and diabetes mellitus in the Korean general population according to KNHANES 2008. Sci Total Environ, 409:4054-62.

M, P. (1984.). Agua Subterránea. . México: Limusa: Noriega Editores.

Nishida S, T. S. (2004). Attempt of arsenic removal in wasted water by inorganic materials. 14th International Conference on the Properties of Water and Steam. Japan,, 387–390.

Prüss-Üstün A., C. C. (2006). Ambientes saludables y prevención deenfermedades: hacia una estimación de la carga de morbilidad atribuible al medio ambiente. oms, ISBN 978 92 4 359420 0.

Rahman M.M., N. N. (2009). Chronic exposure of arsenic via drinking water and its adverse health impacts on human. Environ Geochem Health,, 31:189-200.

WHO. (s.f.). WHO. Water Sanitation and Health. Arsenic in drinking water. . Obtenido de WHO. Water Sanitation and Health. Arsenic in drinking water. : http://www.who.int/water_sanitation_health/dwq/arsenic/en/

Yang L, D. M. (2006). Adsorption of arsenic on layered double hydroxides: effect of the particle size. Industrial & Engineering Chemistry Research, 45(13): 4742–4751.