A Suggested Mechanism for Sulfate Adsorption by Soils1, 2
1963
Chang, Monica L. | Thomas, Grant W.
Equilibrium experiments with SO₄-Cl mixtures suggested that the quantity of anions held by a Cecil subsoil increases with time. Further experiments with K₂SO₄ confirmed the “time” effect on two Cecil subsoils and on Fe-treated Georgia kaolinite. On the basis of the time effect and other observations made on SO₄²⁻ adsorption a suggested mechanism is proposed. The mechanism envisions the replacement of OH⁻ ions by SO₄²⁻ and the hydrolysis of Al (in the presence of salt) to form H⁺ ions. Thus, the OH⁻ ions are neutralized by H⁺ ions and anion adsorption proceeds apace.
显示更多 [+] 显示较少 [-]