时间、固液比、pH值、离子强度、腐殖酸等因素对钴离子在凹凸棒石上吸附的影响

on Attapulgite: Effects of Time, Solid-to-Liquid Ratio, pH, Ionic Strength, and Humic Acid

摘要: 采用静态法研究了钴离子在凹凸棒石上的吸附行为。钴离子在凹凸棒石上的吸附受体系 pH值、离子强度、固液比、富啡酸 (FA)及电解质离子的强烈影响。在研究范围内，离子强度对钴离子在凹凸棒石上吸附的影响明显；富啡酸对钴离子在凹凸棒石上的吸附在高pH值下影响明显；在pH<8时不同电解质对钴离子在凹凸棒石上的吸附影响明显。

Abstract: The sorption of Co(Ⅱ) on attapulgite was studied by batch technique. The sorption of Co(Ⅱ) onto attapulgite was strongly dependent on pH, ionic strength, solid-to-liquid ratio, FA, and electrolyte ion. The results indicate that sorption of Co(Ⅱ) onto attapulgite is influenced by ionic strength obviously. The presence of FA reduces the sorption of Co(Ⅱ) at high pH values. The sorption of Co(Ⅱ) on attapulgite is also influenced by the background electrolyte foreign anions at pH<8.