Abstract: The palm fiber was carbonized and then modified by MgO in precipitation burning oxidation method for dealing with dyeing wastewater. The surface of MgO modified palm activated carbon (MgO/PAC) was observed by the scanning electron microscopy (SEM), the FT-IR spectra and the true density. Palm activated carbon and modified palm activated carbon’s adsorptive capacity were tested by the static absorption experiments. The adsorption kinetic study of dye in different initial concentration and the adsorption quantity in different pH were studied. The results showed that, the dye adsorption quantity was improved almost 8 times after the modification; the adsorption on Reactive Brilliant Red X-3B followed the pseudo second-order kinetic model and whose reaction rate was not only controlled by the intra-particle diffusion but also by extra-particle diffusion process.

Key words: palm fiber, activated carbon, MgO, Reactive Brilliant Red X-3B, adsorption kinetics