Adsorción de arsénico en zeolita natural pretratada con óxidos de magnesio

Translated title of the contribution: Adsorption of arsenic in natural zeolite pretrat With oxides of magnesium

Flérida Mejía-Zamudio, Jesús L. Valenzuela-García, Salvador Aguayo-Salinas, Diana Meza-Figueroa

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A methodology was developed to modify a natural zeolite (chabazite) with magnesium oxide in order to remove arsenic (As+5) from water for human consumption. It is proposed a magnesium oxide while regarded as an efficient adsorbent for removing metals in water. X-ray diffraction analyses show significant changes in the chabazite due to the presence of oxides and amorphous hydroxides incorporated during the pretreatment. Experimental design results show an efficiency greater than 90% of As+5 adsorbed in five minutes. The results indicate that the most significant variables affecting the adsorption of As+5 are the initial concentration of As and the solid/liquid (S/L) ratio. Experimental data fitted better to Freundlich isotherm with a 20.17 mg/g adsorption capability.
Translated title of the contributionAdsorption of arsenic in natural zeolite pretrat With oxides of magnesium
Original languageSpanish
Pages (from-to)217-227
Number of pages11
JournalRevista Internacional de Contaminacion Ambiental
StatePublished - 1 Apr 2009

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