An Investigation of Cu2+ Removal by Using Different Types of Modified Starch

In this study, Cu2+ removal from the aqueous solution using different types of starch was examined by the batch method. The potato starch and corn starch which were modified in different ways were examined to determine the percent removal values of Cu2+ by various trials. The optimum conditions of the experimental procedure were investigated from 10 to 50 mg L-1 as beginning concentration, 4 to 6 as pH, with 5-30 min. as shaking time. 0.15 g modified starch was added 50 mL study solution at room temperature during all different studies. The experimental results offered that thanks to the starch modification with water as an adsorbent, the percent removal values of potato starch 89.58% and corn starch 74.07% were found. Concentration, shaking time, and pH were detected with the optimum values as 20 mg L-1, 20 min, and 6 respectively. Moreover, the obtained results were also evaluated according to the Freundlich adsorption isotherm and observed to be compatible with this curve.