Abstract
ABSTRACT This paper deals with cadmium ions removal from aqueous solutions by Ni/Mo-layered double hydroxide with kinetics and thermodynamics studies. At temperature of 318 K, pH = 5.5, adsorbent mass of 0.5 g/L, time of 105 min, and initial Cd(II) concentration of 175 mgL–1, the maximum adsorption capacity reached to 68.4 mg/g. The adsorption processes followed pseudo-second-order model and Langmuir isotherm and the calculated thermodynamic parameters concluded that the adsorption process was spontaneous, thermally dependent, and endothermic in nature. Therefore, the adsorption mechanism was proposed through multilayer surface adsorption by coordination of cadmium ions with hexavalent molybdenum (Mo6+) and also the coexisting ions effect on removal was detected.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
