Phosphorus adsorption onto clay minerals and iron oxide with consideration of heterogeneous particle morphology

Fang, Hongwei; Cui, Zhenghui; He, Guojian; Huang, Lei; Chen, Minghong

doi:10.1016/j.scitotenv.2017.05.133

Cited by 91 publications

(31 citation statements)

References 57 publications

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“…Adsorbent magnetic particles have also been successfully tested over numerous regeneration cycles for the removal of nonorthophosphate species, for example, dissolved organophosphonates, which can also pose a risk of eutrophication once released into the environment (Rott et al, 2018). Other phosphorus sorbents include nano zero-valent iron (Eljamal, Khalil, Sugihara, & Matsunaga, 2016), iron oxides and clay (Fang, Cui, He, Lei, & Chen, 2017), zirconium oxide particles (Su, Cui, Li, Gao, & Shang, 2013) along with zirconium composites . Other researchers also proposed activated aluminum oxide and granulated ferric hydroxide (Genz, Kornmullerb, & Jekel, 2004), alum (Banu, Do, & Yeom, 2008), red mud granular adsorbents (Zhao et al, 2012), submerged vegetation (Dierberg, DeBusk, Jackson, Chimney, & Pietro, 2002), calcite (Karageorgiou, Paschalis, & Anastassakis, 2007), and calcium-rich minerals (Lamont et al, 2018).…”

Section: Research Articlementioning

confidence: 99%

Phosphate removal from water using alginate/carboxymethylcellulose/aluminum beads and plaster of paris

Malicevic

Pacheco

Lamont

et al. 2020

Water Environment Research

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Phosphorus released in lakes due to agricultural water runoff causes eutrophication, deteriorating water quality and harming ecosystems. Two adsorbents were studied for the removal of phosphate from water: plaster of Paris powder and hydrogel beads produced using alginate, carboxymethylcellulose, and aluminum. The reaction kinetics, adsorption capacity, and ability to desorb were compared. Sorption of phosphate with either plaster of Paris or hydrogel beads was well described by the Langmuir model. In deionized water, hydrogel beads had a maximum sorption capacity of 90.5 mg PO43- /g dry bead with an equilibration time of approximately 24 hr. Monovalent anions (e.g., chloride) did not affect phosphorus sorption onto hydrogel beads, whereas divalent anions (e.g., sulfate) hindered sorption. In deionized water, plaster of Paris (POP) powder has a maximum capacity of 1.52 mg PO43- /g with an equilibrium time of less than 10 min. Sorbents can potentially be reused following phosphate desorption, and desorbed phosphate may be reused as fertilizer. At pH = 9.5, hydrogel beads desorbed up to 60% of the original amount of phosphate sorbed and lower amounts at lower pH. At pH = 2, POP powder desorbed only 35% of the initial phosphate sorbed, and desorption decreased with increasing pH. Practitioner points The maximum sorption capacity of plaster of Paris is 1.52 mg PO43- /g. The maximum sorption capacity of hydrogel beads is 90.5 mg PO43- /g. Monovalent anions do not affect phosphorus sorption, and divalent anions hinder it by ≈36%. Sorption is well described by Langmuir isotherms (R2 > 0.98). Hydrogel beads desorb 60% of phosphorus at pH = 9, possibly allowing phosphorus reuse.

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Section: Research Articlementioning

confidence: 99%

Phosphate removal from water using alginate/carboxymethylcellulose/aluminum beads and plaster of paris

Malicevic

Pacheco

Lamont

et al. 2020

Water Environment Research

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“…When the ambient pH is lower than the pH PZC (6.7) of hematite, anions are expected to adsorb on the surface of the positively charged hematite by electrostatic attraction. [34][35][36] The above-mentioned explanation can be regarded as one of the reasons why TP can be removed in large quantities.…”

Section: Experiments Under Optimal Electrolysis Conditionsmentioning

confidence: 99%

A three-dimensional electrochemical oxidation system with α-Fe₂O₃/PAC as the particle electrode for ammonium nitrogen wastewater treatment

et al. 2020

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“…Besides iron content, phosphorus content, and the presentation of iron in the ores, other important factors that might account for this are the composition of the gangue associated with the respective ores, their distribution, and their respective abilities to adsorb phosphorus compared to the iron-containing phase of the ores. It is well known that marked differences exist in the ability of different iron oxides and oxyhydoxides to adsorb phosphate, and in the kinetics of the adsorption processes [50,79,83,85,[247][248][249][250][251][252], which has been linked to differences in their respective surface properties and mineralogy [253]. The most reported order is goethite > hematite > ferrihydrite [79,254,255], while phosphate desorption kinetics (in percentage of prior adsorbed phosphate desorbed) are ranked as follows: hematite (12.5%) > goethite (10%) > ferrihydrite (8.5%) [79].…”

Section: Plausible Reasons For Differences In the Ease Of Phosphorus mentioning

confidence: 99%

Technological Challenges of Phosphorus Removal in High-Phosphorus Ores: Sustainability Implications and Possibilities for Greener Ore Processing

Ofoegbu

2019

Sustainability

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With the present rates of iron ore consumption, currently unusable, high-phosphorus iron ore deposits are likely to be the iron ores of the future as higher-grade iron ore reserves are depleted. Consequently, the design and timely development of environmentally-benign processes for the simultaneous beneficiation of high-phosphorus iron ores and phosphorus recovery, currently a technological challenge, might soon become a sustainability challenge. To stimulate interest in this area, phosphorus adsorption and association in iron oxides/hydroxyoxides, and current efforts at its removal, have been reviewed. The important properties of the most relevant crystalline phosphate phases in iron ores are highlighted, and insights provided on plausible routes for the development of sustainable phosphorus recovery solutions from high-phosphorus iron ores. Leveraging literature information from geochemical investigations into phosphorus distribution, speciation, and mobility in various natural systems, key knowledge gaps that are vital for the development of sustainable phosphorus removal/recovery strategies and important factors (white spaces) not yet adequately taken into consideration in current phosphorus removal/recovery solutions are highlighted, and the need for their integration in the development of future phosphorus removal/recovery solutions, as well as their plausible impacts on phosphorus removal/recovery, are put into perspective.

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Phosphorus adsorption onto clay minerals and iron oxide with consideration of heterogeneous particle morphology

Cited by 91 publications

References 57 publications

Phosphate removal from water using alginate/carboxymethylcellulose/aluminum beads and plaster of paris

Phosphate removal from water using alginate/carboxymethylcellulose/aluminum beads and plaster of paris

A three-dimensional electrochemical oxidation system with α-Fe₂O₃/PAC as the particle electrode for ammonium nitrogen wastewater treatment

Technological Challenges of Phosphorus Removal in High-Phosphorus Ores: Sustainability Implications and Possibilities for Greener Ore Processing

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Phosphorus adsorption onto clay minerals and iron oxide with consideration of heterogeneous particle morphology

Cited by 91 publications

References 57 publications

Phosphate removal from water using alginate/carboxymethylcellulose/aluminum beads and plaster of paris

Phosphate removal from water using alginate/carboxymethylcellulose/aluminum beads and plaster of paris

A three-dimensional electrochemical oxidation system with α-Fe2O3/PAC as the particle electrode for ammonium nitrogen wastewater treatment

Technological Challenges of Phosphorus Removal in High-Phosphorus Ores: Sustainability Implications and Possibilities for Greener Ore Processing

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A three-dimensional electrochemical oxidation system with α-Fe₂O₃/PAC as the particle electrode for ammonium nitrogen wastewater treatment