Sulphate sorption at high equilibrium concentration in Andosols

• Published in: Geoderma Vol. 136; no. 3; pp. 716 - 722
• Main Authors: Delfosse, Thomas, Delmelle, Pierre, Delvaux, Bruno
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.12.2006; Elsevier
• Subjects: Agronomy. Soil science and plant productions; Alunite supergroup; Andosols; Biological and medical sciences; Biphasic isotherm; Earth sciences; Earth, ocean, space; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; Soil anion adsorption; Soils; Sulphate sorption; Surficial geology; Soil anion adsorption; Sulphate sorption; Andosols; Biphasic isotherm; Alunite supergroup; experimental studies; Adsorption isotherm; thermodynamics; sulfates; sorption; precipitation; solution; pH; soils; anions; Constituent; Addition; adsorption; processes; colloidal materials; concentration; samples; Type; Transition; alunite; equilibrium

The main process by which inorganic SO 4 2− inputs are retained in soils is through adsorption on soil colloids. However, in soils subject to intense SO 4 2− addition, precipitation of Al x (SO 4) y (OH) z minerals also may contribute to SO 4 2− sorption. While direct observation of Al x (SO 4) y (O...