This study focused on the comparative evaluation of the potentials of exotic and indigenous breed hen eggshell powder as an adsorbent for the removal of Chromium (VI) ion from textile wastewater. The effects of adsorbent dosage, contact time, solution pH and solution temperature were investigated in a batch process and evaluated. The results showed that the optimum conditions were adsorbent dose of 6g, contact time of 3 h, pH of 3 and temperature of 60 oC for both adsorbents. Meanwhile, under these conditions, the percentage removal of Chromium (VI) ion for exotic hen eggshell and indigenous hen eggshell powder was found to be 80.30% and 73.50% respectively. These indicate that both types of adsorbents could be used as effective, low cost adsorbent to improve the purity of textiles wastewater containing Chromium (VI) ion. However, the Exotic breed hen eggshell powder is more efficient.
Keywords: Exotic and indigenous eggshell, adsorbent, Chromium (VI) ion, textile wastewater