Hexavalent Chromium Removal from Aqueous Solution by Newspaper
Ismael Acosta-Rodríguez, Erika Ledezma-Tristán, Juan F. Cárdenas-González, María de Guadalupe Moctezuma-Zárate, Víctor Manuel Martínez-Juárez

Abstract
We studied the Chromium (VI)removal capacity in aqueous solution by newspaper, using the diphenylcarbazide method to evaluate the metal concentration. So, the highest biosorption of the metal (50 mg/L) occurs within 24 hours, at pH of 1, and 28 °C. According to temperature, the highest removal was observed at 60 °C, in 5hours, when the metal (50mg/L) is completely adsorbed. At the analyzed concentrations of Cr (VI),newspaper showed good removal capacity, besides it removes efficiently the metal in situ (83.1%, and 93.9% of removal, 7 days of incubation, 5 g of biomass, in soil and water contaminated, respectively).So it can be used to eliminate it from industrial wastewater.

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