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Mixtures of wood with either phosphoric acid or diammonium hydrogen phosphate [(NH 4 ) 2 HPO 4 ] were heated under nitrogen or steam/nitrogen flows at temperatures between 300 and 500 o C. As a result of these processes, activated carbons with various pore size distribution and surface properties were obtained. The samples were characterised using potentiometric titration...
The influence of surface functional groups on activated carbons on the adsorption and desorption of lithium ions, present in trace amounts in aqueous solution, has been studied in the absence and presence of an applied electric field.Application of an electric current during the experiments dramatically increased the sorption of the ions. Moreover, lithium could be released into the solution by reversing...
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