Adsorption behaviors of basic amino acids on a spherical cellulose adsorbent

作者：Lin Chunxiang^*; Liu Minghua

来源：5th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2011, 2011-05-10 to 2011-05-12.

DOI：10.1109/icbbe.2011.5781012

• Acid concentrations
• Adsorption behavior
• Adsorption capacities
• Adsorption mechanism
• Adsorption time
• Basic amino acid
• Break through curve
• Carboxyl groups
• Chemical adsorption
• Dynamic experiment
• Equilibrium adsorption
• Four cycles
• Freundlich models
• Langmuirs
• Rate expression
• Second orders
• Spherical
• Static experiments

An investigation was conducted on the adsorption and desorption of three basic amino acids (L-His, L-Lys and L-Arg) with a spherical cellulose adsorbent containing the carboxyl group. Static experiments were carried out as function of pH, initial amino acid concentration, adsorption time and temperature. The adsorbent showed excellent adsorption capacities for the mentioned basic amino acids. The equilibrium adsorption data of the amino acids on adsorbent were analyzed by Langmuir and Freundlich models. The kinetics of basic amino acids adsorption nicely followed the second-order rate expression which demonstrated that chemical adsorption plays a significant role in the adsorption mechanism. Moreover, dynamic experiments were performed to determine the breakthrough curves. Regeneration experiments were tried four cycles and the results implied that the cellulose adsorbents had such advantages as simple regeneration, high recovery and reusability.

• 出版日期2011
• 单位福州大学