Effective removal of phosphate from aqueous solution using humic acid coated magnetite nanoparticles

Rashid, Mamun; Price, Nathaniel T.; Gracia-Pinilla, M.A.; Ο'Shea, Kevin Ε.

doi:10.1016/j.watres.2017.06.085

Cited by 146 publications

(64 citation statements)

References 38 publications

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“…A highest efficiency at the temperature of 60 °C is observed compared to other temperatures. It agrees well with other literatures [65,66]. from the slope of the straight line are 0.023 min -1 , 0.032 min -1 , 0.045 min -1 , and 0.051 min -1 at 30 °C , 40 °C , 50 °C , and 60 °C , respectively.…”

Section: Effect Of Reaction Temperaturessupporting

confidence: 93%

Fe73.5Si13.5B9Cu1Nb3 metallic glass: Rapid activation of peroxymonosulfate towards ultrafast Eosin Y degradation

et al. 2018

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L. (2018). Fe73.5Si13.5B9Cu1Nb3 metallic glass: Rapid activation of peroxymonosulfate towards ultrafast Eosin Y degradation. AbstractDiscovering functional applications of metallic glasses (MGs) as heterogeneous catalysts is a fundamental and essential topic. This work reports the rapid production of sulfate radicals (SO 4 • − ) from peroxymonosulfate (PMS) using Fe 73.5 Si 13.5 B 9 Cu 1 Nb 3 glassy ribbons as catalysts for Eosin Y (EY) dye wastewater treatment. The reaction rates (k) from the experimental data reveal that the EY degradation is well fitted with the pseudo-first-order kinetic model. The strong electron transfer ability is characterized by electrochemical methods, presenting an advanced catalytic performance for EY degradation. Various experimental parameters, including dye concentration, catalyst dosage, PMS concentration, light intensity, pH and reaction temperature as well as the saline and natural inorganic effects, are fully investigated. The results show that the color removal of EY dye could achieve nearly 100% within 20 min. The quenching experiments are performed to verify the production of reactive species, suggesting that both •OH and SO 4 • − are produced from PMS that play significant roles for EY degradation. This critical study reveals that using Fe 73.5 Si 13.5 B 9 Cu 1 Nb 3 MGs as catalysts exhibit a superior reactivity on PMS activation in wastewater treatment. The discoveries shed lights into the study of electron transfer ability for MGs, presenting extensive prospects in the application of dye wastewater treatment.

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Section: Effect Of Reaction Temperaturessupporting

confidence: 93%

Fe73.5Si13.5B9Cu1Nb3 metallic glass: Rapid activation of peroxymonosulfate towards ultrafast Eosin Y degradation

et al. 2018

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“…It is comprehensible that oxyanions inhibited phosphorus removal by competing for LDH's anion exchange capacity and electrostatic adsorption sites [31]. The dramatic dive in P ingestion in the presence of CO 3 2− was ascribed to carbonate's priority into the LDH interzone and due to the OH − -induced competitive adsorption resulted from its hydrolysis (k h =2.12 x 10 −4 ) [38]. Inhibition rendered by background electrolytes (Na + ) can be interpreted by its competition with the electrostatically-adsorbed phosphate on the outer-sphere adsorption sites [39].…”

Section: Mechanisms In Simultaneous Adsorptionmentioning

confidence: 99%

Simultaneous adsorption study of ammonium and phosphate by ZnFe-layered double hydroxide (ZnFe-LDH)-modified adsorbents.

Liu¹,

Liang²,

Li³

et al. 2020

Preprint

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Background Trace amounts of nitrogen and phosphorus can easily trigger eutrophication damage in surface water, while cost-effective adsorption treatment is in prospect for clearing these pollutants simultaneously and efficiently. In this study, engineered adsorbents decorated with ZnFe-LDH by alkaline coprecipitation (3-6 mm, with modified ceramsite as CZF and modified volcanic rock as VZF) were prepared for NH 4 + and H 2 PO 4 - co-adsorption from aqueous solutions.Results Coexisting ions showed great effects on phosphate adsorption, especially Ca 2+ and CO 3 2- , and humic acid exhibited only a limited shielding impact on co-adsorption properties. Though comprehensive tests presented that the maximum captured amount of ammonium and phosphate occurred at pH 7, the isotherm and kinetic results suggest that two adsorbents preferentially adsorbed each pollutant. Specifically, the maximum uptake quantity of NH 4 + (15.55 mg-N g -1 ) and H 2 PO 4 - (11.21 mg-P g -1 ) were achieved by VZF and CZF, respectively, and controlled by physisorption and chemisorption distinctively, revealing that contaminants were cleared in disparate ways. Performances of seven consecutive adsorption/desorption cycles using 5% NaOH regenerant suggested that CZF retained 71.9% of PO 4 - removal efficiency, and VZF retained 47.9% of the NH 4 + adsorption rate, implying the strong reusability of ZnFe-LDH-modified adsorbents. A dynamic study has assessed that with 1 kg of combined modified adsorbents, approximately 527 L of polluted runoff flow could be continuously treated to below the National limits within one adsorption cycle.Conclusion Comparing with other parallel adsorbents, ZnFe-LDH-modified adsorbent is promising in eliminating eutrophication due to their superior capacity, stability, renewability, and non-toxicity.

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“…18,19 Humic acid-coated Fe 3 O 4 nanoparticles (Fe 3 O 4 @HA NPs) are widely used in wastewater treatment specically for the efficient removal of various materials, such as heavy metals, 20 toxic inorganic arsenic species, 21 the radionuclide Eu(III), 22 and anionic phosphates. 23 However, these nanoparticles are rarely used to separate oil from water in emulsied oily wastewater, 24,25 due to the low separation efficiency attributed to both negative surface charge of Fe 3 O 4 @HA NPs and emulsied droplets. To improve their adsorption capabilities the surface potential of Fe 3 O 4 @HA NPs needs to be changed from negative to positive through further surface modications.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Fe₃O₄ nanocomposites for efficient separation of ultra-small oil droplets from hexadecane–water emulsions

Cai

Wang

et al. 2020

RSC Adv.

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Effective removal of phosphate from aqueous solution using humic acid coated magnetite nanoparticles

Cited by 146 publications

References 38 publications

Fe73.5Si13.5B9Cu1Nb3 metallic glass: Rapid activation of peroxymonosulfate towards ultrafast Eosin Y degradation

Fe73.5Si13.5B9Cu1Nb3 metallic glass: Rapid activation of peroxymonosulfate towards ultrafast Eosin Y degradation

Simultaneous adsorption study of ammonium and phosphate by ZnFe-layered double hydroxide (ZnFe-LDH)-modified adsorbents.

Synthesis of Fe₃O₄ nanocomposites for efficient separation of ultra-small oil droplets from hexadecane–water emulsions

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Effective removal of phosphate from aqueous solution using humic acid coated magnetite nanoparticles

Cited by 146 publications

References 38 publications

Fe73.5Si13.5B9Cu1Nb3 metallic glass: Rapid activation of peroxymonosulfate towards ultrafast Eosin Y degradation

Fe73.5Si13.5B9Cu1Nb3 metallic glass: Rapid activation of peroxymonosulfate towards ultrafast Eosin Y degradation

Simultaneous adsorption study of ammonium and phosphate by ZnFe-layered double hydroxide (ZnFe-LDH)-modified adsorbents.

Synthesis of Fe3O4 nanocomposites for efficient separation of ultra-small oil droplets from hexadecane–water emulsions

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Synthesis of Fe₃O₄ nanocomposites for efficient separation of ultra-small oil droplets from hexadecane–water emulsions