L-组氨酸在活性炭上的吸附等温线

Adsorption Isotherm of L-Histidine on Active Carbon

考察在不同温度、pH值下,L-组氨酸在活性炭上的吸附平衡.结果表明,在L-组氨酸和活性炭等电点附近时,L-组氨酸的吸附量比偏离等电点时的大;25℃时的吸附量比80℃时大;在80℃和pH=1.0时,L-组氨酸在活性炭上的吸附等温线可用Freundlich模型进行似合,拟合结果为q=2.591 4c0.809 7.

Adsorption isotherms of L-histidine on active carbon were measured at different temperature and different pH value. Results show that the equilibrium adsorption quantity of L-histidine on active carbon is higher at the isoelectric point than at other pH; the Freundlich model can describe the adsorption well at 80 ℃ and pH = 1.0 and the regress result is that： q=2. 591 4C^0.8097.