RSM-CCD Optimized EDTA-functionalized Magnetic Activated Carbon Derived from Sunflower Stem for Adsorptive Removal of Ni2+ and Malachite Green from Containment Water Elham Fraid Aghazadeh, Mortaza Mirzaei*, Akbar Hassanpour, Ali Khani, Nader Jafarzadeh, 10.57647/ijnd.2026.1703.03 XML Requires Subscription PDF downloads: 96