Ultimate selenium(IV) monitoring and removal from water using a new class of organic ligand based composite adsorbent

水中のセレニウム(IV)の監視と分離のための新型配位子搭載複合型抽出剤

Awual, M. R.; 矢板 毅; 鈴木 伸一; 塩飽 秀啓   

Awual, M. R.; Yaita, Tsuyoshi; Suzuki, Shinichi; Shiwaku, Hideaki

This work reports the selenium (Se(IV)) detection and removal from water by ligand functionalized organic-inorganic based novel composite adsorbent. The adsorbent exhibited distinct color change in the presence of various concentrations of Se(IV). This was characterized by UV-vis spectroscopy, and the color change was observed by naked-eye observation. The data fitted well to the Langmuir isotherm model, and the maximum Se(IV) sorption capacity was 111.12 mg/g. The presence of diverse competing ions did not affect the Se(IV) sorption capacity, and the adsorbent had almost no sorption capacity for these coexisting ions, which suggests the high selectivity to Se(IV) ions.