Factors affecting the amount of phosphate extracted from soil by anion exchange resin

N. J. Barrow, T. C. Shaw

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

In resin-solution systems at equilibrium, solution concentration of phosphate was proportional to the square of the phosphorus sorbed, and inversely proportional to the weight of resin and the volume of solution. The rate of approach to equilibrium was decreased by: enclosing the resin in mesh bags, by increasing the volume of solution, and by decreasing the vigour of shaking. In resin-solution-soil systems, the concentration of phosphate in the solution was important in determining the amount of phosphate extracted from the soil. Consequently, phosphorus extracted increased as volume of water and weight of resin increased, and decreased when the resin was enclosed in mesh bags. Even after long periods of shaking, when the concentration of phosphate in solution had reached low values, appreciable phosphate remained on the soil in equilibrium with this solution phosphate. Equations suggested that, if the solution concentration could be reduced to zero, phosphate sorbed by the resin would be proportional to the phosphorus added to the soil. However, at finite levels of addition of resin, the proportion of added phosphate sorbed by the resin increased as the level of addition of phosphate increased.

Original languageEnglish
Pages (from-to)309-323
Number of pages15
JournalGeoderma
Volume18
Issue number4
DOIs
Publication statusPublished - 1 Jan 1977
Externally publishedYes

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anion exchange resins
resins
resin
ion exchange
phosphate
phosphates
soil
phosphorus
bags
vigor
soil solution

Cite this

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title = "Factors affecting the amount of phosphate extracted from soil by anion exchange resin",
abstract = "In resin-solution systems at equilibrium, solution concentration of phosphate was proportional to the square of the phosphorus sorbed, and inversely proportional to the weight of resin and the volume of solution. The rate of approach to equilibrium was decreased by: enclosing the resin in mesh bags, by increasing the volume of solution, and by decreasing the vigour of shaking. In resin-solution-soil systems, the concentration of phosphate in the solution was important in determining the amount of phosphate extracted from the soil. Consequently, phosphorus extracted increased as volume of water and weight of resin increased, and decreased when the resin was enclosed in mesh bags. Even after long periods of shaking, when the concentration of phosphate in solution had reached low values, appreciable phosphate remained on the soil in equilibrium with this solution phosphate. Equations suggested that, if the solution concentration could be reduced to zero, phosphate sorbed by the resin would be proportional to the phosphorus added to the soil. However, at finite levels of addition of resin, the proportion of added phosphate sorbed by the resin increased as the level of addition of phosphate increased.",
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Factors affecting the amount of phosphate extracted from soil by anion exchange resin. / Barrow, N. J.; Shaw, T. C.

In: Geoderma, Vol. 18, No. 4, 01.01.1977, p. 309-323.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Factors affecting the amount of phosphate extracted from soil by anion exchange resin

AU - Barrow, N. J.

AU - Shaw, T. C.

PY - 1977/1/1

Y1 - 1977/1/1

N2 - In resin-solution systems at equilibrium, solution concentration of phosphate was proportional to the square of the phosphorus sorbed, and inversely proportional to the weight of resin and the volume of solution. The rate of approach to equilibrium was decreased by: enclosing the resin in mesh bags, by increasing the volume of solution, and by decreasing the vigour of shaking. In resin-solution-soil systems, the concentration of phosphate in the solution was important in determining the amount of phosphate extracted from the soil. Consequently, phosphorus extracted increased as volume of water and weight of resin increased, and decreased when the resin was enclosed in mesh bags. Even after long periods of shaking, when the concentration of phosphate in solution had reached low values, appreciable phosphate remained on the soil in equilibrium with this solution phosphate. Equations suggested that, if the solution concentration could be reduced to zero, phosphate sorbed by the resin would be proportional to the phosphorus added to the soil. However, at finite levels of addition of resin, the proportion of added phosphate sorbed by the resin increased as the level of addition of phosphate increased.

AB - In resin-solution systems at equilibrium, solution concentration of phosphate was proportional to the square of the phosphorus sorbed, and inversely proportional to the weight of resin and the volume of solution. The rate of approach to equilibrium was decreased by: enclosing the resin in mesh bags, by increasing the volume of solution, and by decreasing the vigour of shaking. In resin-solution-soil systems, the concentration of phosphate in the solution was important in determining the amount of phosphate extracted from the soil. Consequently, phosphorus extracted increased as volume of water and weight of resin increased, and decreased when the resin was enclosed in mesh bags. Even after long periods of shaking, when the concentration of phosphate in solution had reached low values, appreciable phosphate remained on the soil in equilibrium with this solution phosphate. Equations suggested that, if the solution concentration could be reduced to zero, phosphate sorbed by the resin would be proportional to the phosphorus added to the soil. However, at finite levels of addition of resin, the proportion of added phosphate sorbed by the resin increased as the level of addition of phosphate increased.

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