Removal of mercury(II) and cadmium(II) ions from synthetic wastewater by a newly synthesized amino and thiolated multi-walled carbon nanotubes
作者： Mojtaba Hadavifar , Nader Bahramifar , Habibollah Younesi , Mitra Rastakhiz , Qin Li
DOI: 10.1016/J.JTICE.2016.08.029
关键词: Carbon nanotube 、 Cadmium 、 Binary system 、 Adsorption 、 Reaction rate constant 、 Aqueous solution 、 Inorganic chemistry 、 Chemistry 、 Metal ions in aqueous solution 、 Mercury (element)
摘要: Functionalization of multi-walled carbon nanotubes can be carried out by introducing amino and thiol functional groups onto the nanotube sidewalls. This functionalized used as a new type efficient metal ions adsorbent from aqueous solutions. In this study, batch column adsorption experiments were to evaluate capacities single binary system mercury cadmium. system, maximum capacity 204.64 61.10 mg/g obtained for cadmium, respectively, while systems, values 35.89 14.09 achieved respectively. Column breakthrough curves described Yan Thomas models. The bigger rate constant (kTh) (120.77 ml/min/mg Cd(II) 9.44 Hg(II)) indicated that intensity thiolated MWCNTs was higher compared Hg(II). However, value (qe) Hg(II) (39.75 mg/g) than (9.72 in continuous system.
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