Solid phase extraction–inductively coupled plasma spectrometry for adsorption of Co(II) and Ni(II) from radioactive wastewaters by natural and modified zeolites

Recent advances in the science and technology of natural zeolites in Iran

“…Clinoptilolite showed the weakest performance among the adsorbents; however, the Na-CLP showed the best adsorption for Cs, but less so for Sr, Co and Mn ions. Adsorption of 103 Ru, Co 2+ and Ni 2+ on natural and modified CLP (NH 4 + form) was reported from nuclear wastewater Malekpour et al, 2011). The selectivity of zeolite was greater for Co 2+ than Ni 2+ .…”

“…Based on desorption studies, 97%, 74% and 85% recovery rates of Ru, Co 2+ and Ni 2+ , respectively, were achieved using HCl solution. The adsorption capacity for both cations increased with increasing temperature, and microwave irradiation facilitated the adsorption of the cations onto zeolite channels (Malekpour et al , 2011). A CLP-rich tuff was more effective for radioactive 212 Pb removal from aqueous solutions than natrolite (Kazemian et al , 2001).…”