Rawan Khoraki 1*, Imad Aldeen Alkhalaf 1, and Amir Alhaj Sakur2

1 Dept. of Plant Biology, Faculty of Science, University of Aleppo, Aleppo, Syria.
2Analytical and Food Chemistry, Faculty of Pharmacy, University of Aleppo, Aleppo, Syria.
(*Corresponding author: Rawan Khoraki , Email:khorakirawan8@gmail.com phone: 0968061808).

Received: 10/07 / 2025            Accepted: 6/11/ 2025

Abstract: 

Water resources (rivers, lakes, and canals) are increasingly contaminated with heavy metals and other pollutants due to industrial expansion and intensive human activities, threatening these essential resources upon which various aspects of life depend. This study aims to investigate the effects of corn cob powder (Zea mays L.) on the quality of water. Treatment as an adsorbent, to remove zinc from contaminated aqueous solutions, where graded doses of the pH of treated corn cob powder were studied at a concentration of (200 ppm, at a constant temperature of 20) °C, at a contact period of 30) minutes, The samples were then filtered, and the pH of the (treated) corn cob powder solutions was measured. All studied samples were analyzed by analyzing the amount of zinc remaining in the samples after adsorption using manual volumetric titration with (EDTA) for all samples. The results were confirmed using atomic absorption spectroscopy.The results showed that the adsorption rate of the treated corn cob ranged between (18-53)% at a pH range of (3-10.4), and the optimal pH value was chosen for treated corn cobs at (1)g.

 Keywords: Zinc, corn cobs, adsorption, contaminated water, atomic absorption, pH.

 Full paper in Arabic: PDF