“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iași
Abstract
Wood residues are commonly used in the furniture industry and in
agriculture, as composts' ingredients or in different techniques as absorbents,
having a large specific surface and a chemical composition appropriate for
achieving adsorption processes. As a result of previous experiments it is found
that the activation by boiling in acidic solutions of sawdust, in addition to
increasing the adsorption capacity, it does not add any color to the treated
solutions. In the present study we tested the retention capacity of two heavy
metal ions (Cu and Co) in solutions of different concentrations, on sawdust
processed by grinding, sieving and activation in hydrochloric acid. As main
results, copper ions were retained between 63.2 – 91.16% and cobalt ions,
between 79.9 – 91.16%, considering the initial concentrations of the solutions
