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

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

Journal of environmental sciences (China) (2013-04-20)

Jiao Yang, Qingru Zeng, Liang Peng, Ming Lei, Huijuan Song, Boqing Tie, Jidong Gu

ABSTRACT

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.

MATERIALS

Product Number

Brand

Product Description

03677

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt dihydrate, BioUltra, for molecular biology, ≥99.0% (T)

27285

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt dihydrate, meets analytical specification of Ph. Eur., BP, USP, FCC, 99.0-101.0%

03685

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt dihydrate, ≥97.0% (KT)

E6635

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt dihydrate, Sigma Grade, suitable for plant cell culture, 98.5-101.5%

ED2SS

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt dihydrate, reagent grade, 98.5-101.5% (titration)

E1644

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt dihydrate, 98.5-101.5%, BioUltra

ED2SC

Sigma-Aldrich

Ethylenediaminetetraacetic acid calcium disodium salt hydrate

E4884

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt dihydrate, ACS reagent, 99.0-101.0%

PHR1068

Supelco

Ethylenediaminetetraacetic acid disodium salt dihydrate, Pharmaceutical Secondary Standard; Certified Reference Material

E5134

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt dihydrate, suitable for electrophoresis, for molecular biology, 99.0-101.0% (titration)

700320

Sigma-Aldrich

Iron oxide(II,III), magnetic nanoparticles solution, 5 nm avg. part. size, 5 mg/mL in toluene

700304

Sigma-Aldrich

Iron oxide(II,III), magnetic nanoparticles solution, 20 nm avg. part. size, 5 mg/mL in toluene

700312

Sigma-Aldrich

Iron oxide(II,III), magnetic nanoparticles solution, 10 nm avg. part. size, 5 mg/mL in toluene

725331

Sigma-Aldrich

Iron oxide(II,III), magnetic nanoparticles solution, 5 nm avg. part. size, 5 mg/mL in H₂O

725366

Sigma-Aldrich

Iron oxide(II,III), magnetic nanoparticles solution, 20 nm avg. part. size, 5 mg/mL in H₂O

725358

Sigma-Aldrich

Iron oxide(II,III), magnetic nanoparticles solution, 10 nm avg. part. size, 5 mg/mL in H₂O

03690

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt solution, BioUltra, for molecular biology, pH 8.0, ~0.5 M in H₂O

518158

Sigma-Aldrich

Iron(II,III) oxide, 99.99% trace metals basis

03609

Sigma-Aldrich

Ethylenediaminetetraacetic acid, BioUltra, ≥99.0% (KT)

310069

Sigma-Aldrich

Iron(II,III) oxide, powder, <5 μm, 95%

E6758

Sigma-Aldrich

Ethylenediaminetetraacetic acid, anhydrous, crystalline, BioReagent, suitable for cell culture

EDS

Sigma-Aldrich

Ethylenediaminetetraacetic acid, anhydrous, BioUltra, ≥99% (titration)

2854

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt solution, 2%, solution

Sigma-Aldrich

Ethylenediaminetetraacetic acid, purified grade, ≥98.5%, powder

E9884

Sigma-Aldrich

Ethylenediaminetetraacetic acid, ACS reagent, 99.4-100.6%, powder

E8008

Sigma-Aldrich

Ethylenediaminetetraacetic acid solution, 0.02% in DPBS (0.5 mM), sterile-filtered, BioReagent, suitable for cell culture

637106

Sigma-Aldrich

Iron(II,III) oxide, nanopowder, 50-100 nm particle size (SEM), 97% trace metals basis

03620

Sigma-Aldrich

Ethylenediaminetetraacetic acid, ≥98.0% (KT)

E7889

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt solution, for molecular biology, 0.5 M in H₂O, DNase, RNase, NICKase and protease, none detected

431788

Sigma-Aldrich

Ethylenediaminetetraacetic acid, 99.995% trace metals basis