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

ZUSAMMENFASSUNG

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.

MATERIALIEN

Produktnummer

Marke

Produktbeschreibung

E5134

Sigma-Aldrich

Ethylendiamintetraessigsäure Dinatriumsalz Dihydrat, suitable for electrophoresis, for molecular biology, 99.0-101.0% (titration)

637106

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

E8008

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Ethylendiamintetraessigsäure -Lösung, 0.02% in DPBS (0.5 mM), sterile-filtered, BioReagent, suitable for cell culture

E6758

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Ethylendiamintetraessigsäure, anhydrous, crystalline, BioReagent, suitable for cell culture

431788

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Ethylendiamintetraessigsäure, 99.995% trace metals basis

310069

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Eisen(II,III)-oxid, powder, <5 μm, 95%

ED2SC

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Ethylendiamintetraessigsäure Calcium-Dinatriumsalz Hydrat

E6635

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Ethylendiamintetraessigsäure Dinatriumsalz Dihydrat, Sigma Grade, suitable for plant cell culture, 98.5-101.5%

518158

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Eisen(II,III)-oxid, 99.99% trace metals basis

E9884

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Ethylendiamintetraessigsäure, ACS reagent, 99.4-100.6%, powder

E4884

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Ethylendiamintetraessigsäure Dinatriumsalz Dihydrat, ACS reagent, 99.0-101.0%

700312

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Eisenoxid(II,III), magnetische Nanopartikel -Lösung, 10 nm avg. part. size, 5 mg/mL in toluene

2854

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Ethylendiamintetraessigsäure Dinatriumsalz -Lösung, 2%, solution

725358

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Eisenoxid(II,III), magnetische Nanopartikel -Lösung, 10 nm avg. part. size, 5 mg/mL in H₂O

725331

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Eisenoxid(II,III), magnetische Nanopartikel -Lösung, 5 nm avg. part. size, 5 mg/mL in H₂O

E7889

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Ethylendiamintetraessigsäure Dinatriumsalz -Lösung, for molecular biology, 0.5 M in H₂O, DNase, RNase, NICKase and protease, none detected

EDS

Sigma-Aldrich

Ethylendiamintetraessigsäure, BioUltra, anhydrous, ≥99% (titration)

03690

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Ethylendiamintetraessigsäure Dinatriumsalz -Lösung, BioUltra, for molecular biology, pH 8.0, ~0.5 M in H₂O

ED2SS

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Ethylendiamintetraessigsäure Dinatriumsalz Dihydrat, reagent grade, 98.5-101.5% (titration)

27285

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Ethylendiamintetraessigsäure Dinatriumsalz Dihydrat, meets analytical specification of Ph. Eur., BP, USP, FCC, 99.0-101.0%

725366

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Eisenoxid(II,III), magnetische Nanopartikel -Lösung, 20 nm avg. part. size, 5 mg/mL in H₂O

700320

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Eisenoxid(II,III), magnetische Nanopartikel -Lösung, 5 nm avg. part. size, 5 mg/mL in toluene

700304

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Ethylendiamintetraessigsäure, purified grade, ≥98.5%, powder

PHR1068

Supelco

Dinatriumedetat Dihydrat, Pharmaceutical Secondary Standard; Certified Reference Material

E1644

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Ethylendiamintetraessigsäure Dinatriumsalz Dihydrat, 98.5-101.5%, BioUltra

03677

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Ethylendiamintetraessigsäure Dinatriumsalz Dihydrat, BioUltra, for molecular biology, ≥99.0% (T)

03620

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Ethylendiamintetraessigsäure, ≥98.0% (KT)

03685

Sigma-Aldrich

Ethylendiamintetraessigsäure Dinatriumsalz Dihydrat, ≥97.0% (KT)

03609

Sigma-Aldrich

Ethylendiamintetraessigsäure, BioUltra, ≥99.0% (KT)