Tecnologías de biosorción y membranas en la eliminación de metales pesados

In this paper a comparison between biosorption membrane technology and the elimination of Pb ⁺² and Cd ⁺² wastewater from the mining industry is performed. SEPA cell membranes CF II laboratory scale operations that allows cross-flow filtration with reverse ósmosis membranes (SE, GE Osmonics) and nanofiltration (DK, GE Osmonics), yielding a ratio of ósmosis rejection of 98,77 for Pb ⁺² is used and 98.30 for Cd ^{+ 2} and nanofiltration 98,67 for Pb ^{+ 2} and 98.05 for Cd ⁺² . Powered by biosorption using sugar cane bagasse removal percentages for 97.76 and 81.35 Pb ⁺² for Cd ⁺² are obtained. From the environmental point of view the two technologies are compatible with the environment and from the economic point of view, the membranes have a higher initial cost than biosorption process but life is about 10 years, Biosorption you can take advantage of agricultural waste with low acquisition cost.