Heavy metal removal using potential polyacrylamide adsorbent: characterization, modeling and optimization using RSM. - Lebkiri, Imane; Addar, Fatima Zahra; Farah, Mohamed; Abbou, Brahim; Amri, Abdelhay El; Kadiri, Lamya; Tahaikt, Mustapha (Journal of the Iranian Chemical Society, 2026)