La-EDTA coated Fe₃O₄ nanomaterial: Preparation and application in removal of phosphate from water

TY - JOUR

T1 - La-EDTA coated Fe3O4 nanomaterial

T2 - Preparation and application in removal of phosphate from water

AU - Yang, Jiao

AU - Zeng, Qingru

AU - Peng, Liang

AU - Lei, Ming

AU - Song, Huijuan

AU - Tie, Boqing

AU - Gu, Jidong

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (No. 21007014, 21107024), the Start Foundation of Hunan Agricultural University (No. 10YJ01), the National Science and Technology Major Projects (No. 2009ZX07212-001-05), the National Environmental Protection Public Welfare Program (No. 201009047) and the Scientific Research Fund of Hunan Provincial Education Department (No. 11C0650).

PY - 2013/2/1

Y1 - 2013/2/1

N2 - La-EDTA-Fe3O4 was prepared by a chemical co-precipitation method. The magnetic composite was characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Furthermore, the adsorption properties of La-EDTA-Fe3O4 toward phosphate in water were investigated. The uptake rate of phosphate in water by La-EDTA-Fe3O4 was 3-1000 times than that of EDTA-Fe3O4, and reached 97.8% at 7 hr. The adsorption process agreed well with the Freundlich model and kinetics studies showed that the adsorption of phosphate proceeds according to pseudo second-order adsorption kinetics. The maximum removal rate was achieved at pH 6.0-7.0. The La-EDTA-Fe3O4 had good adsorption properties and could be separated well from aqueous solution by a permanent magnet. Therefore, this nanomaterial has potential application for the removal of phosphate from large water bodies.

AB - La-EDTA-Fe3O4 was prepared by a chemical co-precipitation method. The magnetic composite was characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Furthermore, the adsorption properties of La-EDTA-Fe3O4 toward phosphate in water were investigated. The uptake rate of phosphate in water by La-EDTA-Fe3O4 was 3-1000 times than that of EDTA-Fe3O4, and reached 97.8% at 7 hr. The adsorption process agreed well with the Freundlich model and kinetics studies showed that the adsorption of phosphate proceeds according to pseudo second-order adsorption kinetics. The maximum removal rate was achieved at pH 6.0-7.0. The La-EDTA-Fe3O4 had good adsorption properties and could be separated well from aqueous solution by a permanent magnet. Therefore, this nanomaterial has potential application for the removal of phosphate from large water bodies.

KW - La-EDTA-FeO

KW - Magnetic materials

KW - Phosphate

UR - http://www.scopus.com/inward/record.url?scp=84873537844&partnerID=8YFLogxK

U2 - 10.1016/S1001-0742(12)60014-X

DO - 10.1016/S1001-0742(12)60014-X

M3 - 文章

C2 - 23596964

AN - SCOPUS:84873537844

SN - 1001-0742

VL - 25

SP - 413

EP - 418

JO - Journal of Environmental Sciences (China)

JF - Journal of Environmental Sciences (China)

IS - 2

ER -