Abstract
The objective of this study was to determine the effect of an electric current on the effectiveness of reactive dye Reactive Black 5 (RB 5) adsorption onto two adsorbents: chitin and chitosan. The current density applied in the experiment was 50 A/m2. The experiment was carried out using electrodes made of stainless steel. At the first stage of the experiment – without the flow of electric current – the effectiveness of RB 5 dye adsorption onto chitin was determined at pH 3.0 and 5.0, whereas onto chitosan it was at pH 5.0. In the second stage, the effectiveness of RB 5 dye adsorption was determined onto chitin and chitosan with a simultaneous flow of direct current. In the case of both adsorbents, the pH value of the solution was 5.0. Results achieved in the study proved that the electric current had a positive effect on adsorption effectiveness onto chitin, as it contributed to an increase in the quantity of removed RB 5 dye to 440 mg/g d.m. from the initial 270 mg/g d.m. when assayed at the optimal pH 3.0 and from 135 mg/g d.m. when assayed at pH 5.0.