Removal of everzol orange and supra yellow dyes from simulated wastewater using hybrid modified rice husk and carbonized palm shell adsorbents

Abstract EN

One of the important classes of the pollutants is dyes, once they discharge in to the water receiving bodies causes several human and environmental problems.

The aim of this work was to investigate the adsorption of Everzol orange 3R (EO-D), and Supra yellow RL (SY-D) dyes from synthetic waste water using hybrid modified adsorbent from blended rice husk (BRH) and carbonized palm shell (CPS) in single layer bed column adsorption study .

For this purpose, six types of adsorbents were used for dyes removal which are one unmixed rice husk (100% BRH) adsorbent ; one unmixed carbonized palm kernel shell (100% CPS) adsorbent ; and four hybrid adsorbents prepared by mixing (BRH) and (CPS) with mixing ratios 20%,40%,60%,80% wt of BRH .

Each adsorbent was characterized individually by elemental analysis, BET surface area, and Field Emission Scanning Electron Microscope (FESEM).

Evaluating the performance of the columns was carried out by means of removal efficiency and area under the graph analysis.

The result showed that, both dyes were strongly adsorbed by 0% (BRH)) with removal efficiency of 89.7%, and 96.8%, with least area under the graph of 1282, and 1164, respectively.

As a conclusion, using unmixed carbonized palm shell as adsorbent for (EO-D) and (SY-D) dyes removal showed a maximum removal efficiency with least area under the graph and mixing of rice husk with CPS as a hybrid adsorbent did not reveal any beneficial effect for increasing the removal efficiency of studied dyes.