Phosphate sorption isotherms for some Sierra Leone soils

✍ Scribed by Edward R. Rhodes

• Publisher: John Wiley and Sons
• Year: 1975
• Tongue: English
• Weight: 364 KB
• Volume: 26
• Category: Article
• ISSN: 0022-5142
• DOI: 10.1002/jsfa.2740260704

✦ Synopsis

Abstract

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.