Rawan Maher Khoraki1*, Imad Aldeen Alkhalaf 2 and Amir Alhaj Sakur
1 Department of Plant Biology, Faculty of Science, University of Aleppo, Syria.
2 Department of Analytical and Food Chemistry, Faculty of Pharmacy, University of Aleppo, Syria.
(*Corresponding author: Rawan Maher Khoraki, Email: khorakirawan8@gmail.com, 0968061808).
Received: 4/ 3/ 2025 Accepted: 28/ 5/ 2025
Abstract
Water is widely used in all aspects of daily life, and with the growth of various technologies and industries, all of these activities pollute water sources, especially rivers, streams, canals, and inland lakes, with various types of pollutants, including heavy metals. The research aims to study the effect of treated and untreated corn cob powder (Zea mays L.) as an adsorbent to remove zinc from polluted aqueous solutions. Different doses of corn cob powder processed from each solution were studied at graded concentrations (100 – 200 – 300 – 400 ppm), at a constant temperature of (20) degrees Celsius, and pH = 8, at different contact times. Then the samples were filtered and then the previously mentioned concentrations were measured using an atomic absorption device. The results showed that the adsorption percentage for the treated corn cobs ranged between (33-94%) between the two concentrations (100-400), respectively. In contrast, the percentages for the untreated corn cobs ranged between (0-18%), and the optimal economic adsorbent dose was chosen for the treated corn cobs (1.5).
Keywords: Zinc, corn cobs, adsorption, polluted water, atomic absorption.
Full paper in Arabic: PDF