Long-term phosphorus effects on evolving physicochemical properties of iron and aluminum hydroxides

Makris, Konstantinos C.; Harris, Willie G.; O’Connor, G. A.; El‐Shall, H.

doi:10.1016/j.jcis.2005.02.011

Cited by 51 publications

(36 citation statements)

References 30 publications

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“…In general, adsorption over a period of minutes to hours occurs by anion adsorption on the surface hydroxyl groups of the adsorbent [26,27]. Diffusion of anions into the lattice or adsorbent matrix requires a longer time to attain equilibrium [1]. Note.…”

Section: Rate Of Phosphate Removalmentioning

confidence: 99%

“…≡Zr-OH + H + ≡ZrOH + 2 protonation in an acidic medium (anion exchange), (1) ≡Zr-OH ≡ZrO − + H + deprotonation in an alkaline solution (cation exchange). (2) It is known that certain anions (phosphate, arsenate, selenate, etc.)…”

Section: Mechanism Of Adsorption Of Phosphate Onmentioning

confidence: 99%

“…A number of studies have been carried out on the interaction of phosphate with natural or synthetic minerals: goethite (α-FeOOH) [1,2], manganese nodules (mixed oxides of δ-MnO 2 , α-SiO 2 , FeOOH, and Al 2 O 3 ) [3], manganese oxides [4], and aluminum-impregnated mesoporous silicates [5]. X-ray absorption near edge structure spectroscopy (XANES) has recently been used to study phosphate adsorption on mineral oxides [6].…”

Section: Introductionmentioning

confidence: 99%

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Selective adsorption of phosphate from seawater and wastewater by amorphous zirconium hydroxide

Chitrakar

Tezuka

Sonoda

et al. 2006

Journal of Colloid and Interface Science

262

136

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Section: Rate Of Phosphate Removalmentioning

confidence: 99%

Section: Mechanism Of Adsorption Of Phosphate Onmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Selective adsorption of phosphate from seawater and wastewater by amorphous zirconium hydroxide

Chitrakar

Tezuka

Sonoda

et al. 2006

Journal of Colloid and Interface Science

262

136

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“…A large number of phosphate adsorbents have been reported such as iron oxide and hydroxide [3][4][5][6], aluminum hydroxide [3,7,8], aluminosilicate [7][8][9], calcium silicate [10], macroporous TiO 2 [11], steel slag [12], sludge waste [13], fly ash [14][15][16], soils [17,18], metal-loaded orange waste [19], coconut core pith [20], and layered double hydroxides (LDH) [21][22][23]. One of these adsorbents is binary MgAl-LDH.…”

Section: Introductionmentioning

confidence: 99%

“…One of these adsorbents is binary MgAl-LDH. The MgAl-LDH possesses a high phosphate adsorption capacity, which is caused by the positively charged Mg-Al brucite-like octahedral layers and exchangeable anions such as Cl -and CO 3 2-in the interlayer space [21,24]. Although these adsorbents work well in a phosphate solution, most of them are not useful in a solution including plenty of other anions such as seawater.…”

Section: Introductionmentioning

confidence: 99%

Phosphate Adsorption Site on Zirconium Ion Modified MgAl-layered Double Hydroxides

et al. 2009

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Phosphorus sorption–desorption behaviour of river bed sediments in the Abshineh river, Hamedan, Iran, related to their composition

Jalali

Peikam

2012

Environ Monit Assess

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Phosphorus (P) sorption by sediments may play a vital role in buffering P concentration in the overlying water column. To characterize P sorption-desorption in the river bed sediments, 17 bed sediment samples collected from Abshineh river, in a semi arid region, Hamedan, western Iran were studied through a batch experiment and related to sediment composition. The sorbed fraction ranged from 4.4% to 5.4% and from 38.5% to 86.0% of sorption maxima when 20 and 1,500 mg P kg(-1), respectively, was added to the sediment samples. Phosphorus sorption curves were well fitted to the Langmuir model. Zero equilibrium P concentration ranged from 0.10 to 0.51 mg P l(-1) and varied with sediment characteristics. Phosphorus desorption differed strongly among the studied bed sediments and ranged from 10.8% to 80.2% when 1,500 mg P kg(-1) was added. The results of the geochemical modelling indicated that even under low P addition (2 mg l(-1)), the solutions are mainly saturated with respect to hydroxyapatite and ß-tricalcium phosphate minerals and undersaturated with respect to other Ca and Mg minerals, whereas under higher P addition (150 mg l(-1)), most Ca-P solid phases, except the most soluble mineral (brushite), will likely precipitate. A Langmuir sorption maximum was positively correlated with carbonate calcium. Estimated P retention capacity of the bed sediments are generally lower and zero equilibrium P concentration values higher in upstream sites than at the downstream sites, suggesting that sediments in upstream and downstream may act as source and sink of P, respectively.

show abstract

Long-term phosphorus effects on evolving physicochemical properties of iron and aluminum hydroxides

Cited by 51 publications

References 30 publications

Selective adsorption of phosphate from seawater and wastewater by amorphous zirconium hydroxide

Selective adsorption of phosphate from seawater and wastewater by amorphous zirconium hydroxide

Phosphate Adsorption Site on Zirconium Ion Modified MgAl-layered Double Hydroxides

Phosphorus sorption–desorption behaviour of river bed sediments in the Abshineh river, Hamedan, Iran, related to their composition

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