Please use this identifier to cite or link to this item: http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1522
Removal of arsenic (III) from groundwater by titanium dioxide as adsorbent
MIRIAM ZSAZSA LOPEZ PARAGUAY
MARIA TERESA ALARCON HERRERA
Acceso Abierto
Sin Derechos Reservados
Adsorption
Arsenic
It is necessary to develop new and economic alternatives for arsenic (As) removal by adsorbents. The aim of this study is to investigate the feasibility of using commercially available titanium dioxide (TiO2) for arsenite (As(III)) removal from aqueous solutions. Batch experiments were performed to determine the effect of several variables such as adsorbent dosage, contact time, initial arsenite concentration, adsorbent particle size, etc. on the removal of arsenite from water. Results show that the kinetic rate of As(III) adsorption was high in the first 30 minutes and slows thereafter. The maximum achieved removal efficiency of As(III) was 98.8% using an adsorbent dosage of 2.1 g/L in 1.5 hours of contact time. Freundlich isotherm better described the adsorption process, which indicates that the multilayer adsorption should be involved in the process of As(III) removal. Commercial TiO2 had high adsorption capacity for As(III) removal under natural conditions of pH 8 at room temperature (26±1ºC).
2010
Memoria de congreso
Inglés
OTRAS
Versión revisada
submittedVersion - Versión revisada
Appears in Collections:Artículos en Congresos

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