A Sensitive ligand embedded nano-conjugate adsorbent for effective cobalt(II) ions capturing from contaminated water

Awual, M. R.; 矢板 毅; 塩飽 秀啓; 鈴木 伸一

Chemical Engineering Journal, 276, p.1 - 10, 2015/09

https://doi.org/10.1016/j.cej.2015.04.058

The organic ligand of N,N(octane-1,8-diylidene)di(2-hydroxyl-3,5-dimethylaniline) was synthesized and anchored onto inorganic mesoporous materials by direct immobilization method for Co(II) ions capturing from waste samples. The interaction of this material with various metal ions was evaluated, and it exhibited distinct color change from whitish to green in the presence of Co(II) ions, detectable even to the naked-eye. The effects of solution pH, contact time, competing ions and initial concentration on Co(II) sorption on NCA were investigated under optimum conditions. The data also clarified that the NCA adsorbent is an efficient and eco-friendly adsorbent for Co(II) treatment. Therefore, the proposed adsorbent can be considered as a potential candidate for Co(II) ions monitoring and removal from wastewater in large-scale operations.