Comparative Assessment of Biosorption Potential of Non-treated and Acid-treated Activated Carbon Produced from Maize cob for Wastewater Treatment: Collection and carbonization of maize cob to powdered activated carbon. NIJOTECH. 2022;41(3):603-612. Accessed April 28, 2026. https://www.nijotech.com/index.php/nijotech/article/view/2877