THE EXAMINATION OF THE PERFORMANCE OF A NATURAL BIOMATERIAL FOR THE ELIMINATION OF CHROME IN AQUEOUS

The wastewater pollution by trace metals remains today one of the major concerns of the government. This study a imed to examine the adsorption of chromium ions in aqueous solution by lignocellulose biomaterial prepared from eucalyptus bark in batch mode. The working method implementation was carried out using a dual approach: experimental and numerical, based on an experimental design for response surface. It was chosen to develop a statistical model of polynomial type interactions with 3 parameters to describe the adsorption process and determine elimination optimization conditions for chromium (VI) ions in aqueous media. According to the estimated results and the experimental data, the lignocellulose biomaterial prepared from eucalyptus bark appears to have a strong affinity for the chromium ions at low pH values.