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研究了不同 p H值介质中酪氨酸在活性炭上的吸附行为 .结果表明 ,p H值 4 .2～ 6.1时吸附量较大 ,在酪氨酸的等电点时吸附量最大 ;酪氨酸被吸附的主要形式是兼性离子 ;酪氨酸离子靠 Van der Waals力吸附在活性炭 /水界面上 .用介质 p H值对酪氨酸溶解度的影响和活性炭的表面性质解释了实验结果
The adsorption behavior of tyrosine on activated carbons with different p H values was studied. The results showed that when p H value was between 4.2 and 6.1, the adsorption capacity was large and the adsorption capacity was the highest at tyrosine isoelectric point. Tyrosine The main form of acid adsorption is facultative ions; tyrosine ions are adsorbed on the activated carbon / water interface by Van der Waals force. The experimental results are explained by the influence of the medium p H value on the tyrosine solubility and the surface properties of the activated carbon