Shahrood University of Technology Journal of Mining and Environment 2251-8592 3 1 2012 11 05 Box-Behnken Design of Experiments Investigation forAdsorption of Cd2+ onto carboxymethyl Chitosan Magnetic Nanoparticles 51 59 76 10.22044/jme.2012.76 EN A Igder Department of Mining, Faculty of Engineering, IKIU Ali Akbar Rahmani Department of Mining, Faculty of Engineering, IKIU Ali Fazlavi Department of Mining, Faculty of Engineering, IKIU Mohammad Hossein Ahmadi Member of chemistry group Mohammad Hossein Ahmadi Azqhandi Department of Chemistry, Faculty of Science, IKIU Mohammad Hassan Omidi Department of Chemistry, Faculty of Science, IKIU Journal Article 2012 01 31 The main objective of the present study is to investigate the feasibility of using Carboxymethyl chitosan magnetic nanoparticles (CCMN) for the adsorption of Cd²⁺. The study also reports important parameters, which affect the adsorption process, i.e., pH, adsorbent dose, contact time and concentration of Cd²⁺, using Box-Behnken designs. Firstly, functional carboxymethyl chitosan magnetic nanoparticles (about 33 nm) was prepared by chemical coprecipitating and characterized by means of scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier Transform infrared spectroscopy (FTIR). Then, CCMN was used as the adsorbent for the treatment of effluent. The ANOVA result of the full model shows that pH, adsorbent dosage and metal concentration had a significant effect on metal removal. In addition, this parameters indicates which contact time variable does not have a significant effect (p>0.05). https://jme.shahroodut.ac.ir/article_76_dab1e5fce85016f2693530944b161369.pdf