摘要
研究了经人工改型所得的钙型蛭石对铵离子的交换性能 .测定了不同 p H值和不同蛭石用量下钙型蛭石对 NH4 +的全交换容量 ,测定了不同温度下样品的平衡等温线 .结果表明 ,钙型蛭石对 NH4 + 的交换总量随 p H值的变化而波动 ,在 p H值为 7时其交换总量最大 ,为 71 .89mmol/1 0 0 g,其选择性随温度的降低而升高 .
The capacity of ion exchange of NH 4 Ions on Ca 2 -vermiculite are studied. The whole exchange capacity of NH 4 on Ca 2 -vermiculite under different pH value and different dosage of Ca 2 -vermiculite, and equilibria isotherm at different temperature were determined.The results showed that the whole exchange capacity of NH 4 on Ca 2 -vermiculite fluctuates with varying of the pH value and its largest one is 71.89mmol/100g at pH7 that Ca 2 -vermiculite′s selectivity would increase with the temperature lowing.
出处
《太原师范学院学报（自然科学版）》
2004年第3期54-57,共4页
Journal of Taiyuan Normal University:Natural Science Edition
