Removal of Lead Ions from Water Using a Resin of Mimosa Tannin and Carbon Nanotubes

A large amount of input of lead to the environment has resulted from several economical activities and has a significant impact on water resources. The reduction of lead contamination in water is an important issue for the environmental and human health. This study aimed to synthesize a tannin-formaldehyde resin with the inclusion of carbon nanotubes and coconut fibers, for removal of lead in water. The concentrations of Pb(II) were measured by Energy-Dispersive X-Ray Fluorescence (EDXRF) analysis. The physical and chemical characteristics and the kinetic and isotherms adsorption parameters are reported. The synthesized resin can achieve a capacity of Pb(II) adsorption higher than 13.8 mg g(-1), showing a good alternative for its future use in the treatment of water containing toxic metals in trace concentrations. (c) 2017 Elsevier B.V. All rights reserved.