REMOCION_DE_CROMO_VI_EN_SOLUCION_POR_LA_CASCARA_DE.pdf -...

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See discussions, stats, and author profiles for this publication at: REMOCIÓN DE CROMO (VI) EN SOLUCIÓN POR LA CÁSCARA DE NARANJA (Citrus sinensis Osbeck) Article · January 2012 CITATIONS 2 READS 944 5 authors , including: Some of the authors of this publication are also working on these related projects: Hexavalent Chromate Reductase View project Bioremediation of pesticides View project Hilda González Instituto Nacional de Salud Pública 6 PUBLICATIONS 9 CITATIONS SEE PROFILE Juan F Cárdenas-González Unidad Académica Multidisciplinaria Zona Media-UASLP 48 PUBLICATIONS 145 CITATIONS SEE PROFILE All content following this page was uploaded by Juan F Cárdenas-González on 14 December 2016. The user has requested enhancement of the downloaded file.
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Nº9 Abril 2012 REMOCIÓN DE CROMO (VI) EN SOLUCIÓN POR LA CÁSCARA DE NARANJA (Citrus sinensis Osbeck) Ismael Acosta-Rodríguez Hilda M. González Sánchez María de Guadalupe Moctezuma-Zárate Juan F. Cárdenas González Víctor Manuel Martínez Juárez 1 RESUMEN Se estudió la remoción de Cr (VI) en solución acuosa, mediante el empleo de biomasa obtenida de cáscara de naranja. Se observaron los efectos del tiempo y temperatura de incubación, el pH y la cantidad de metal sobre la remoción de éste. La concentración del metal en solución se determinó por la técnica de la difenilcarbazida. La mayor bioadsorción se obtuvo a los 10 minutos, a pH=1.0 ± 0.2, a 60ºC (50 mg/L de Cr VI) con 1 g de biomasa, y elimina totalmente 297 mg/g de tierra contaminada. La biomasa analizada remueve eficientemente el Cr (VI) en solución, por lo cual puede utilizarse para la eliminación de este metal en suelos contaminados y en aguas residuales. Palabras clave : Remoción, Cáscara de Naranja, Cromo (VI), Difenilcarbazida, Aguas residuales 1 Integrantes del Laboratorio de Micología Experimental, CIEP. Facultad de Ciencias Químicas. Universidad Autónoma de San Luís Potosí.
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ABSTRACT The objective of this work was to determine the removal of Chromium (VI) by the orange peel biomass, by a spectrophotometric method using diphenylcarbazide as the complexing agent. Effects of time and temperature of incubation, pH and metal concentration were studied. The highest adsorption was obtained at pH= 1.0 ± 0.2, at 60°C after 10 minutes of incubation, with 50.0 g/L of initial concentration of Chromium (VI) and 1.0 g/100 mL of orange biomass, and remove fully 297 mg Cr (VI)/g of waste soil contaminated. It was concluded that the cellular biomass remove efficiently Cr (VI), and can be used for decontaminate wastewater. Keywords: Removal, Orange peel, chromium (VI), Diphenylcarbazide, Waste Water SUMARIO Introducción Objetivo Material y Métodos Resultados y Discusión Conclusiones Recomendaciones Bibliografía
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INTRODUCCIÓN Diferentes compuestos del cromo son contaminantes ambientales presentes en agua, suelos y efluentes industriales, debido a que dicho metal es ampliamente utilizado en distintas actividades manufactureras. El Cromo (III) es considerado relativamente inocuo
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