Enhanced adsorption of phosphate onto zinc ferrite by incorporating cerium

Gu, Wei; Xie, Qiang; Xing, Mingchao; Wu, Deyi

doi:10.1016/j.cherd.2016.11.026

Cited by 56 publications

(12 citation statements)

References 46 publications

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“…Other studies indicated that, without modification, the affinity of ferrite materials for phosphate was still limited. Recently, different strategies have been investigated on ferrites to develop P-adsorption materials with both easy separability from water and improved phosphate adsorption performance [22] [23] [24] [34].…”

Section: Methods Of Phosphate Removal From West Watermentioning

confidence: 99%

Review: Low Cost, Environmentally Friendly Humic Acid Coated Magnetite Nanoparticles (HA-MNP) and Its Application for the Remediation of Phosphate from Aqueous Media

Damena¹,

Alansi²

2018

JEAS

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Phosphate is a primary nutrient required for the normal functioning of many organisms in the ecosystem. However, presence of excess phosphate into the aquatic systems leads to eutrophication which can promote harmful algal growth and decrease the amount of dissolved oxygen in water. Municipal, industrial and agricultural run-off wastewaters are the major point sources for phosphate discharges. There are different methods to remove phosphates from water. Among these, adsorption is the most widely accepted method for phosphate removal because of its high efficiency, minimum cost, easy and simple operation and applicability at lower concentrations. The emphasis of this review, is to consolidate low cost, environmentally friendly humic acid coated magnetite nanoparticles (HA-MNP) and its application for the remediation of phosphate from aqueous media. The magnetic nanoparticles could be easily separated from the reaction mixture by using a simple hand held magnet and adsorption studies demonstrate the fast and effective separation of phosphate with maximum removal efficiency > 90% at pH 6.6. The adsorption behavior follows the Freundlich isotherm and the removal of phosphate is found higher at acidic and neutral pH compared to basic conditions. The nanoparticles exhibit good selectivity and adsorption efficiency for phosphate in the presence of co-existing ions such as Cl − , 2 4 SO − and 3 NO −with some inhibition effect by 2 3 CO − and finally, the effect of temperature on the adsorption reveals that the process is endothermic and spontaneous.

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Section: Methods Of Phosphate Removal From West Watermentioning

confidence: 99%

Review: Low Cost, Environmentally Friendly Humic Acid Coated Magnetite Nanoparticles (HA-MNP) and Its Application for the Remediation of Phosphate from Aqueous Media

Damena¹,

Alansi²

2018

JEAS

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“…Fortunately, the oxygen nanobubble on Al-modi ed zeolite plays an important role. In addition, zeolite has a large speci c surface area and strong adsorption 22,23 . The natural zeolite is rich in Al 3+ after modi cation with aluminum salt, and the Al 3+ is hydrolyzed to form Al(OH) 3 colloid, which plays an important role for the adsorption of PO 4 3+ in the water 24,25 .…”

Section: Sample Collectionmentioning

confidence: 99%

Experimental Study of Al-Modified Zeolite with Oxygen Nanobubbles in Repairing Black and Odorous Sediments in River Channels

Guo¹,

Wang²,

Yulu

et al. 2022

Preprint

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As an extreme phenomenon of water pollution, black and odorous water not only causes ecological damage, but also severely restricts urban development. At present, the in-situ remediation technology of black and odorous sediment from river channels is still undeveloped, and there are many bottlenecks in the key technologies of black and odorous sediment pollution control and ecological restoration. In this study, three experimental tanks are used to explore the effects of Al-modified zeolite with oxygen nanobubbles on repairing black and odorous sediment from Shichuan river. Which one of the tanks plants Typha orientalis and Canna indica L. (TC), the other plants the same plants and adds Al-modified zeolite with oxygen nanobubbles (TC+AMZON), and the last used as comparison test is not processed (CS). The results show that Nitrogen(N) and phosphorus(P) in the sediment are released violently to the surrounding water. However, TC+AMZON can effectively inhibit the release of P. The amount of soluble reactive phosphorus (SRP) of pore water in the sediment released reaches the maximum at 40 d, and it is 122.97% and 74.32% bigger in TC and CS than that in TC+AMZON. The amount of total phosphorus (TP) of pore water in the sediment released reaches the maximum at 70 d, and it is 260.14% and 218.23% bigger in TC and CS than that in TC+AMZON, respectively. (2) TC+AMZON can significantly increase the dissolved oxygen (DO) and oxidation-reduction potential(ORP) of pore water in the sediment in the early stage of the test. On the 0 d, the DO content in TC+AMZON reaches 10.6 mg/L, and it is 112.0% and 178.95% bigger than that in TC and CS, respectively. The change laws of ORP in the sediment is consistent with that of DO. (3) TC+AMZON can significantly improve the transparency and reduce the content of chlorophylla of the upper water, and can slightly reduce the N and P content of the upper water. The transparency of the upper water in TC+AMZON is increased by 130.76% and 58.73% compared with TC and CS, and the content of chlorophylla is decreased by 55.6% and 50.0% compared with TC and CS.

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“…There is information on the speed of the phosphorus reaction processes on solid surfaces, adsorption experiments given in different periods of time show that the phosphorus disappeared from the solution in the first 24 hours is due to rapid adsorption processes which are reversible and occur on the surface of solids, (Gu et al, 2017) .There is a quantity of phosphorus that disappears from the solution in later periods of time through slow processes that are not totally reversible (Rossi, 2011). In this model, the species originally in the solution phase must diffuse through the liquid layer surrounding the adsorbent particle, transferring through the solution / particle interface, diffusing throughout most of the adsorbent particle and possibly interacting with a remainder on the surface of the adsorbent.…”

Section: Kinetic Studymentioning

confidence: 99%

Phosphate Sequestration From Aqueous Solutions Using A Zeolite in The Zinc Form.

Loayza

Guaya

2020

Preprint

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This work evaluated the ability of a modified zeolite to adsorb phosphates in aqueous solution. The zeolite used for this study was a modified faujasite impregnated with zinc chloride (Z-Zn) on its surface. The experiments were carried out in different stages. Adsorption was performed at different pH of the solution and the zeolitized material was found to be favorable for phosphate adsorption. The adsorption kinetics occurred after 240 minutes and reach the equilbrium, determining chemisorption reactions with a fit of the particular diffusion model ( Dp ) and pseudo second order, the Langmuir model was best adjusted through the isotherms. The adsorption and desorption process occurs best in the presence of HCl, the formation of residual phosphorous in the fractionation stage evidenced that the highest percentage was bound to metals such as Fe and Al.

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Enhanced adsorption of phosphate onto zinc ferrite by incorporating cerium

Cited by 56 publications

References 46 publications

Review: Low Cost, Environmentally Friendly Humic Acid Coated Magnetite Nanoparticles (HA-MNP) and Its Application for the Remediation of Phosphate from Aqueous Media

Review: Low Cost, Environmentally Friendly Humic Acid Coated Magnetite Nanoparticles (HA-MNP) and Its Application for the Remediation of Phosphate from Aqueous Media

Experimental Study of Al-Modified Zeolite with Oxygen Nanobubbles in Repairing Black and Odorous Sediments in River Channels

Phosphate Sequestration From Aqueous Solutions Using A Zeolite in The Zinc Form.

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