THE EFFECT OF <sub>p</sub>H ON PHOSPHATE ADSORPTION IN SOILS

López‐Hernández, Danilo; Burnham, C. P.

doi:10.1111/j.1365-2389.1974.tb01117.x

Cited by 50 publications

(19 citation statements)

References 11 publications

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“…Experiments on phosphorus adsorption in soils reported in the literature, where the content of exchangeable aluminium is recorded indicate that in soils with low contents of exchangeable aluminium (A1 < 1.5meql00g -~) lime application decreased P adsorption (Lopez-Hernandez, 1974;Smith and Sanchez, 1980). In soils with a medium content of exchangeable aluminium (A1 < 2.7 meql00g -~) P adsorption was not affected by liming (Reeve and Sumner, 1970).…”

Section: Adsorbed Pmentioning

confidence: 93%

“…Some experiments have shown that phosphorus adsorption decreased with increasing pH (Lopez-Hernandez and Burnham, 1974;Parfitt, 1977;Smith and Sanchez, 1980). However, other studies have shown that phosphorus adsorption either increased with increasing pH up to a given value (Amarasiri and Olsen, 1973;Mokwunye, 1975) or is not affected by changes in pH (Jones and Fox, 1978;Reeve and Sumner, 1970).…”

Section: Introductionmentioning

confidence: 92%

“…It was suggested that this could be due to the precipitation of exchangeable aluminium as amorphous polynuclear complexes with high surface area and high affinity for P. The same minimum was not observed with the samples incubated for 5 months, possibly because of crystallization of the aluminium complexes. Lopez-Hernandez and Burnham (1974) made a comparison between recently limed soil in the laboratory and a field limed soil adjusted to different pH values many years before. A decrease in phosphorus adsorption with lime application was found for the field limed soil but liming samples of a similar soil group in the laboratory did not reduce phosphate retention to the same extent.…”

Section: Introductionmentioning

confidence: 99%

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The effect of lime on phosphorus adsorption and barley growth in three acid soils

Anjos¹,

Rowell

1987

Plant Soil

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For three acid soils from Santa Catarina, Brazil, lime application and time of incubation with lime had little effect on the adsorption of added phosphorus. In two soils with high contents of exchangeable aluminium, solution P and isotopically exchangeable P were decreased by incubating with lime for 1 month: phosphorus was probably adsorbing on freshly precipitated aluminium hydrous oxides. In one soil with less exchangeable aluminium, P in solution was increased by liming. After 23 months lime increased solution and exchangeable P possibly due to crystallization of aluminium hydrous oxides reducing the number of sites for P adsorption. All these changes were however small.In a pot experiment, lime and phosphorus markedly increased barley shoot and root dry matter and P uptake. Although liming reduced P availability measured by solution P, isotopically exchangeable P and resin extractable P, it increased phosphorus uptake by reducing aluminium toxicity and promoting better root growth. The soil aluminium saturation was reduced by liming, but the concentration of aluminium in roots changed only slightly. The roots accumulated aluminium without apparently being damaged.

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Section: Adsorbed Pmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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The effect of lime on phosphorus adsorption and barley growth in three acid soils

Anjos¹,

Rowell

1987

Plant Soil

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“…Phosphorus adsorption has been reported to be affected by a number of factors, including pH [9][10][11], ionic strength [12][13], type of minerals [14], organic matter content [15], and various forms of Fe and Al [15]. Among these factors the effect of pH on phosphorus sorption is probably the least understood [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Phosphorus by Modified Clay Mineral Waste Material Relating to Removal of it from Aquatic System

Jiang¹,

Su²,

Ruan

et al. 2014

IJEMA

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This study examined the application of modified clay mineral waste material (MCMWM) for removal of phosphorus (P) from aquatic systems including surface water and wastewater related to the application of recycled solid waste materials. The effects of ionic strength and pH on P adsorption by MCMWM were investigated at pH values of 3, 5, 6, 7 and 9 with P concentrations of 10, 20, 40, 100 and 200 mg/L in solution. The P adsorption was rapidly at the early stage with 95% of P in solution being adsorbed for 10 mg/L P in solution at a high pH range within 0.5 hr. The amount of P adsorbed increased with increasing ionic strength. The amount of P adsorbed increased continuously as pH values increased from 3 to 9 for P adsorption at 10 mg/L. Other series of P concentrations in solution showed variable trends due to the rates of P adsorption being affected by pH associated with the effect of ionic strength. The maximum amounts of P adsorbed and the highest percentages of P adsorbed were obtained at pH 9 for all levels of P concentrations, and at pH 7 for the lower P concentrations in solution. Calcium (Ca) ion was found to form a bridge for P adsorption in solution as the increases in the amount of P adsorbed at high pH values was related to the performance of Ca in favoring P to be adsorbed either onto the surfaces or incorporated into the structural bonds of MCMWM. Ionic strength, pH and modification process have been found to be the important factors that influenced P adsorption in solution.

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“…These are areas that have also historically received high levels of acid deposition and undergone soil acidification (Summers and Whelpdale 1976;Falkengren-Grerup 1986;Watmough and Dillon 2004). Several studies have suggested that soil acidification may lead to increased P sorption in soil, and that increased P immobilization in the terrestrial environment is a possible mechanism explaining surface water [TP] decline (Lopez-Hernandez and Burnham 1974;Kanˇa and Kopa´cˇek 2006;Quinlan et al 2008;Eimers et al 2009). Soils on the Precambrian Shield in south-central Ontario acidified between 1983 and 1999 (Watmough and Dillon 2004), and TP levels in surface waters declined over the same time period Eimers et al 2009).…”

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confidence: 99%

Phosphorus forms and response to changes in pH in acid-sensitive soils on the Precambrian Shield

2015

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Baker, S. R., Watmough, S. A. and Eimers, M. C. 2015. Phosphorus forms and response to changes in pH in acid-sensitive soils on the Precambrian Shield. Can. J. Soil Sci. 95: 95Á108. Soil acidification may explain declines in total phosphorus (TP) levels that have been observed in surface waters in central Ontario, Canada, but much of the research on phosphorus (P) mobility in pH manipulated soils has been performed at high P concentrations (i.e., !500 mM). This study investigated P fractionation in acidic (pH 54.6) soils in south-central Ontario and relationships between soil pH and P sorption at relatively low P concentrations to test whether long-term declines in soil pH could have increased soil P sorption. Soils from three forested catchments that vary naturally in soil pH and outlet stream [TP] (0.1Á0.4 mM in 2008) had very similar soil P concentrations and distributions (Hedley fractionation). Only hydrochloric-acid extractable P (i.e., apatite) differed amongst catchments and was greatest at the catchment with the highest stream [TP]. The fraction of P present as labile/ soluble P did not decline with pH as expected and experiments indicated that P sorption at P concentrations between 4.52 and 452.1 mM was insensitive to manipulated solution pH. Soils were, however, able to sorb!90% of P added in sorption experiments at [P] 5452.1 mM. These results suggest that acidification-induced P sorption in upland soils has not contributed to observed decreases in surface water TP concentrations.Key words: Phosphorus, acidification (soil), Hedley fractionation, sorption, Podzols, Ontario (central) Baker, S. R., Watmough, S. A. et Eimers, M. C. 2015. Types de phosphore et re´action de cet e´le´ment aux variations du pH dans les sols du bouclier pre´cambrien sensibles a`l'acidification. Can. J. Soil Sci. 95: 95Á108. L'acidification du sol pourrait expliquer la concentration de phosphore total (PT) plus faible observe´e dans les eaux superficielles du centre de l'Ontario, mais une bonne partie des recherches sur la mobilite´du phosphore (P) dans les sols dont le pH avait e´te´modifie´ont e´teé ffectue´es a`une concentration de P e´leve´e (a`savoir, supe´rieure a`500 mM). La pre´sente e´tude portait sur le fractionnement du P dans les sols acides (pH 54,6) du centre-sud de l'Ontario et sur les liens existant entre le pH du sol et la sorption du P aux concentrations de P relativement faibles. Elle devait e´tablir si l'acidification a`long terme du sol pouvait avoir accru la sorption du P dans le sol. Trois bassins hydrographiques forestiers dont le pH et la de´charge variaient naturellement [PT] (0,1Á0,4 mM en 2008) pre´sentaient une concentration et une distribution tre`s semblables du P dans leur sol (me´thode de fractionnement de Hedley). Seule la concentration de P extractible a`l'acide chlorhydrique (a`savoir, l'apatite) diffe´rait d'un bassin a`l'autre et atteignait un maximum dans le bassin a`la de´charge la plus importante [PT]. La fraction du P correspondant au P labile/soluble ne diminue pas avec le pH comme ...

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THE EFFECT OF _pH ON PHOSPHATE ADSORPTION IN SOILS

Cited by 50 publications

References 11 publications

The effect of lime on phosphorus adsorption and barley growth in three acid soils

The effect of lime on phosphorus adsorption and barley growth in three acid soils

Adsorption of Phosphorus by Modified Clay Mineral Waste Material Relating to Removal of it from Aquatic System

Phosphorus forms and response to changes in pH in acid-sensitive soils on the Precambrian Shield

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THE EFFECT OF pH ON PHOSPHATE ADSORPTION IN SOILS

Cited by 50 publications

References 11 publications

The effect of lime on phosphorus adsorption and barley growth in three acid soils

The effect of lime on phosphorus adsorption and barley growth in three acid soils

Adsorption of Phosphorus by Modified Clay Mineral Waste Material Relating to Removal of it from Aquatic System

Phosphorus forms and response to changes in pH in acid-sensitive soils on the Precambrian Shield

Contact Info

Product

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THE EFFECT OF _pH ON PHOSPHATE ADSORPTION IN SOILS