Adsorption behaviors of L-arginine from aqueous solutions on a spherical cellulose adsorbent containing the sulfonic group

作者：Liu Minghua^*; Huang Jianhui; Deng Yun

来源：Bioresource Technology, 2007, 98(5): 1144-1148.

DOI：10.1016/j.biortech.2006.03.026

• spherical cellulose adsorbent
• graft
• L-arginine
• adsorption
• desorption
• N-methylmorpholine-N-oxide (NMMO)

An investigation was conducted regarding the adsorption and desorption of (L)-arginine from aqueous solutions with a new spherical cellulose adsorbent containing the sulfonic group. The adsorption of (L)-arginine on the adsorbent was time, pH, initial concentration of (L)-arginine and temperature dependent. The adsorption process followed the Langmuir adsorption isotherm, and was endothermic (Delta H = 24.66 KJ/mol). Almost 100% (L)-arginine adsorbed on the adsorbent could be recovered with a 2.0 mol/L NH4OH or 2.0 mol/L NH4Cl aqueous solution. After 25 and 40 cycles of adsorption and desorption, the decrease in adsorption capacity reached to 4.9% and 20.3%, respectively.

• 出版日期2007-3
• 单位福州大学; 成都中医药大学