Ameen Hezam Saeed, A. and Yub Harun, N. and Mahmoud Nasef, M. and Al-Fakih, A. and Abdulhakim Saeed Ghaleb, A. and Kolawole Afolabi, H.  (2022) Removal of cadmium from aqueous solution by optimized rice husk biochar using response surface methodology.  Ain Shams Engineering Journal, 13 (1).   ISSN 20904479