Molecules, Vol. 25, Pages 3023: Selection of the Activated Carbon Type for the Treatment of Landfill Leachate by Fenton-Adsorption Process

In this study, the adsorptive capacity of two types of activated carbon, granular and powdered, was analyzed to determine which was more efficient in the adsorption stage in the Fenton-adsorption process. Likewise, its behavior was analyzed using three isotherm models (Langmuir, Freundlich and Temkin), testing the raw leachate and the Fenton-treated one with both carbons. The adsorption that is carried out on the carbons is better adjusted to the Freundlich and Temkin models. It concludes that multilayers, through the physical adsorption, carry out the adsorption of pollutants on the surface of the carbons. The results show that, statistically, granular activated carbon is more efficient at removing chemical oxygen demand (COD), and powdered activated carbon removes color better. Finally, an adsorption column was designed for the Fenton-adsorption process that was able to remove 21.68 kgCOD/kg carbon. Removal efficiencies for color and COD were >99%.

Source: Molecules - July 1, 2020 Category: Chemistry Authors: Liliana San-Pedro Roger M éndez-Novelo Emanuel Hern ández-Núñez Manuel Flota-Ba ñuelos Jorge Medina Germ án Giacomán-Vallejos Tags: Article Source Type: research