Journal of the Indian Society of Soil Science
SCOPUS
  • Year: 1995
  • Volume: 43
  • Issue: 3

Effect of Ionic Strength on Phosphate Adsorption by Soils

  • Author:
  • Parveen Bala, S.S. Bhardwaj, P.S. Sidhu, Bachan Singh
  • Total Page Count: 5
  • Page Number: 342 to 346

Department of Chemistry, Punjab Agricultural University, Ludhiana, Punjab, 141004.

Department of Soils, Punjab Agricultural University, Ludhiana, Punjab, 141004.

Abstract

Effect of ionic strength and cation species of the supporting electrolyte on adsorption of phosphate by selected benchmark soils of Punjab was studied at 25°C. Phosphate adsorption increased with increase in ionic strength. At a particular molarity, phosphate adsorption was higher in the presence of CaCl2 as compared with NaCl. The adsorption daia conformed to Langmuir and Freundlich adsorption equations. Adsorption maxima and Freundlich constant K increased with increase in ionic strength.

Keywords

Benchmark soils, adsorption isotherms, bonding energy