Phosphate sorption isotherms for some Sierra Leone soils | Zendy

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Phosphate sorption isotherms for some Sierra Leone soils

Author(s) -

Rhodes Edward R.

Publication year - 1975

Publication title -

journal of the science of food and agriculture

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.782

H-Index - 142

eISSN - 1097-0010

pISSN - 0022-5142

DOI - 10.1002/jsfa.2740260704

Subject(s) - sorption , phosphate , soil water , chemistry , langmuir , sierra leone , adsorption , environmental chemistry , nuclear chemistry , soil science , geology , organic chemistry , development economics , economics

Phosphate sorption isotherms were obtained for three acid highly weathered soils of Sierra Leone, by equilibrating air dry samples for 24 h with 0.01 M KH 2 PO 4 solution at 25 °C. The Langmuir and Temkin equations were used to evaluate the sorption capacities for phosphate. Phosphate sorption maxima of 2439, 2137 and 1429 mg/kg soil and x /log c of 774, 718 and 610 were calculated; where x =phosphate sorbed (mg/kg soil) and c =equilibrium phosphate concentration (μmol dm −3 ). Qualitative relationships between these sorption parameters and other soil variables are shown.

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