Preliminary Study of the Adsorption of Nickel and Cobalt using Charcoal From Foconut Shells

Abstract

The department is conducting the study to obtain activated carbon from biomass and coconut shell charcoal from coconut shells to later be used in environmental remediation processes. This work aims to analyze  the behavior of  the adsorption of nickel and cobalt ions using pyrolyzed coal and coconut shell sulfate solutions of both metals to different conditions of pH and initial concentration. Among  the methods used to analyze  the influence raised  the pH of  the solutions of metal sulfates
in the equilibrium concentration. Fixed pH levels were 1,2, 3 and 5. For each pH should then obtain the equilibrium concentrations and the amount of metal adsorbed per unit mass of coal, for different starting solutions. The study results showed that the equilibrium concentration and adsorption capacity of coal increases with increasing initial concentration of  the solution. We obtained the adsorption isotherms  for nickel  and cobalt and their adjustment to the models of Langmuir and Freundlich to different pH. Among the main conclusions are that the experimental results showed that coal pyrolysed coconut shell  has broad potential application in the adsorption of nickel and cobalt ions from sulphate solutions of these metals, obtained very high values of % recovery, and resulting solutions with  very  low concentrations of metal ions.