Jung, Youngkyun Ko, Young Gun Do, Taegu Chu, Youngsang Choi, Ung Su Kim, Choong Hyun 2024-01-19T19:03:01Z 2024-01-19T19:03:01Z 2022-01-10 2019-10 0304-3894 https://pubs.kist.re.kr/handle/201004/119492 APANF@Fe2O3, a phosphate adsorbent, was synthesized in two steps: the immobilization of an amine group onto polyacrylonitrile fiber (PANF) and the adsorption of an iron ion on aminated PANF (APANF). The amination degree of the PANF was adjusted considering its mechanical properties. The Fe2O3 on the surface of the APANF played a role as a phosphate-grasping layer via a ligand-exchange reaction. The APANF@Fe2O3 showed a considerable PO43- adsorption amount of ca. 6 mmol/g at a low pH region (ca. 2-7) and 3 mmol/g at a high pH region (ca. 8-12). The adsorption data were interpreted with various kinetic and isotherm models. The Langmuir model was more suitable than the Freundlich and Redlich-Peterson models to fit the experimental data of the phosphate adsorption on the APANF@Fe2O3 and the pseudo-second-order model was better matched than the pseudo-first-order and Elovich's models. The results of this study demonstrate that the surface of the fibrous adsorbent was homogenous and the phosphate adsorption behavior of the APANF@Fe2O3 followed a simultaneous chemisorption process into the Fe2O3 layer. English ELSEVIER Core/shell hybrid fiber with aminated PAN and Fe2O3 as a high-capacity adsorbent for phosphate ions Article 10.1016/j.jhazmat.2019.06.003 1 JOURNAL OF HAZARDOUS MATERIALS, v.378 JOURNAL OF HAZARDOUS MATERIALS 378 N scie scopus 000489188300002 2-s2.0-85067032195 Engineering, Environmental Environmental Sciences Engineering Environmental Sciences & Ecology Article WASTE-WATER TREATMENT BIOLOGICAL PHOSPHORUS REMOVAL POLYACRYLONITRILE FIBERS ACTIVATED CARBON AQUEOUS-SOLUTION ADSORPTION KINETICS RECOVERY EUTROPHICATION SORPTION Fibrous adsorbent Ligand exchange Phosphorus removal Simultaneous adsorption Tensile strength