Haji, A.A. and Mohammed, N.M. 2019. Optimization of Arsenic Adsorption onto Activated Carbon of Potato Peel Using Response Surface Methodology. Science Journal of University of Zakho. 7, 2 (Jun. 2019), 37–44. DOI:https://doi.org/10.25271/sjuoz.2019.7.2.594.