Natural Mexican Zeolite Modified with Iron to Remove Arsenic Ions from Water Sources

Proceedings

Carrizales-Yánez, Leticia¹  Mejía-Saavedra, Jesús²  Gutiérrez-Arzaluz, Mirella³  Garay-Rodríguez, Maritza E.⁴  Mugica-Álvarez, Violeta⁵ 

[1] Author to whom correspondence should be addressed.;Centro de Investigación Aplicada en Ambiente y Salud, CIACyT-Facultad de Medicina, U.A.S.L.P., San Luis Potosí, S.L.P. 78210, Mexico;Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, 02200 Mexico City, Mexico;Posgrado en Ciencias e Ingeniería, Universidad Autónoma Metropolitana-Azcapotzalco, 02200 Mexico City, Mexico;Presented at Environment, Green Technology and Engineering International Conference (EGTEIC 2018), Caceres, Spain, 18–20 June 2018

关键词: adsorption;    ion arsenic;    natural zeolite;   

DOI  :  10.3390/proceedings2201312

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

In this work the elimination of arsenic ions (V) in water was investigated by adsorption with Mexican natural zeolite (clinoptilolite type) conditioned with iron, the zeolite originating in the state of Oaxaca in Mexico used as an adsorbent medium was placed in a bed zeolite fixed column system of downward and upward flow to retain arsenic ions at pH 7 and 5. The zeolite was characterized by XRD, SEM/EDS and FTIR before and after the arsenic adsorption tests, the results showed that the methods of modification used are suitable for the superficial modification of the natural zeolite since it does not modify its structure. The results showed that with an initial concentration of As of 1 ppm, at a pH of 7, at 25 °C, an elimination of 99.23% was obtained, with a capacity of 0.09 mgAs·g−1zeolite.

【 授权许可】

CC BY