MODIFICACIÓN DE ARCILLA CAOLINÍTICA DE LA REGIÓN DE OIBA (SANTANDER) CON BASES Y SALES PARA AUMENTAR LA CAPACIDAD DE ADSORCIÓN DE COBRE Y ZINC DE EFLUENTES INDUSTRIALES
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Universidad Industrial de Santander
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Se modificó una arcilla caolinítica con sales y bases, para aumentar su capacidad de adsorción de Cu y Zn presente en disolución acuosa a concentración de 100 ppm. El estudio constó de dos etapas: la modificación de la arcilla y la posterior adsorción de los metales. Modificando la arcilla a una relación de 40g de arcilla natural/I de disolución de NaOH ó de KOH, durante un tiempo de 1 h, 25°C y pH de 4,5-5, se obtuvo una adsorción de 97% para el Cu y 94% para el Zn.
A kaolinitic clay was modified with salts and bases, to increase their capacity of adsorption of Cu and Zn presents in watery solution to concentration of 100 ppm. The study consisted of two stages: the modification of the clay and later adsorption of the metals. Modifying the clay to a relationship of 40g of clay natural/L of solution of NaOH or of KOH, during a time of 1 h, 25°C and pH of 4,5-5, was obtained an adsorption of 97% for the Cu and 94% for the Zn.
A kaolinitic clay was modified with salts and bases, to increase their capacity of adsorption of Cu and Zn presents in watery solution to concentration of 100 ppm. The study consisted of two stages: the modification of the clay and later adsorption of the metals. Modifying the clay to a relationship of 40g of clay natural/L of solution of NaOH or of KOH, during a time of 1 h, 25°C and pH of 4,5-5, was obtained an adsorption of 97% for the Cu and 94% for the Zn.
Keywords
Adsorption, Clay, Copper, Modification, Salts, Adsorción, Arcilla, Cobre, Bases, Modificación, Sales