Author/Authors :
Thinh، نويسنده , , Nguyen Ngoc and Hanh، نويسنده , , Pham Thi Bich and Ha، نويسنده , , Le Thi Thanh and Anh، نويسنده , , Le Ngoc and Hoang، نويسنده , , Tran Vinh and Hoang، نويسنده , , Vu Dinh and Dang، نويسنده , , Le Hai and Khoi، نويسنده , , Nguyen Van and Lam، نويسنده , , Tran Dai، نويسنده ,
Abstract :
A simple method was introduced to prepare magnetic chitosan nanoparticles by co-precipitation via epichlorohydrin cross-linking reaction. The average size of magnetic chitosan nanoparticles is estimated at ca. 30 nm. It was found that the adsorption of Cr(VI) was highly pH-dependent and its kinetics follows the pseudo-second-order model. Maximum adsorption capacity (at pH 3, room temperature) was calculated as 55.80 mg·g− 1, according to Langmuir isotherm model. The nanoparticles were thoroughly characterized before and after Cr(VI) adsorption. From this result, it can be suggested that magnetic chitosan nanoparticles could serve as a promising adsorbent for Cr(VI) in wastewater treatment technology.
Keywords :
Fe3O4 , Cr(VI) , Magnetic chitosan nanoparticles , Adsorption isotherm
